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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 5483. Отображено 100.
12-01-2012 дата публикации

Glass having excellent resistance against surface damages and method for the production thereof

Номер: US20120009386A1
Автор: Andreas Langsdorf, Bernd Ruedinger, Friedrich Siebers, Markus Heiss
Принадлежит: Andreas Langsdorf, Bernd Ruedinger, Friedrich Siebers, Markus Heiss

A glass having excellent resistance against surface damages is provided. The glass includes a content of alkaline earth oxides of at least 0.3% by weight and of P 2 O 5 of 0.1 to 4% by weight; the glass has at least one surface that has precipitations with a mean size of 1 to 20 μm. A method is further provided and includes melting a glass batch, yielding a glass melt, and casting the glass melt onto a float bath. The glass melt is maintained on the float bath at a temperature of above 1000° C. for at least 5 minutes, and yields glass. The glass has a content of alkaline earth oxides of at least 0.3% by weight and of P2O5 of 0.1 to 4% by weight, and the glass has at least one surface that has precipitations with a mean size of 1 to 20 μm.

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Номер записи: 1
08-03-2012 дата публикации

Crystallized glass with negative coefficient of thermal expansion and method for manufacturing the same

Номер: US20120058876A1
Автор: Hyung Sik Lim, Kang Taek Lee, Ki Tae Kim, Kim Tae Heung, Yoon Duck Ki
Принадлежит: Jeongkwan Co Ltd

A crystallized glass with negative coefficient of thermal expansion includes 38 wt % to 64 wt % of silica (SiO2); 30 wt % to 40 wt % of alumina (Al2O3); and 5 wt % to 12 wt % of lithium oxide (Li2O) as a basic component, and further includes more than one component selected from the group consisting of 0.5 wt % to 15 wt % of zirconia (ZrO2), 0.5 wt % to 6.5 wt % of titanium dioxide (TiO2), 0.5 wt % to 4 wt % of phosphorus pentoxide (P2O5), 2 wt % to 5 wt % of magnesium oxide (MgO), and 0 wt % to 5 wt % of magnesium fluoride (MgF2) in addition to the basic components. The crystallized glass may have a high negative coefficient of thermal expansion so that it has an advantage that it can be used as a thermal expansion compensation material according to the temperatures of all kinds of glasses and similar products thereof.

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Номер записи: 2
22-03-2012 дата публикации

Transparent, dyed cooktop

Номер: US20120067865A1
Автор: Friedrich Siebers, Helga Goetz, Martin Taplan, Thomas Zenker
Принадлежит: SCHOTT AG

A transparent, dyed cooktop is provided that has improved color display capability. The cooktop is made of a glass ceramic having high quartz mixed crystals as the predominant crystal phase, wherein the glass ceramic comprises none of the chemical refining agents arsenic oxide and/or antimony oxide, except for inevitable trace amounts. The glass ceramic has transmission values of greater than 0.1% in the range of visible light over the entire wavelength range greater than 450 nm, light transmission in the visible range of 0.8 to 5%, and transmission in the infrared at 1600 nm of 45-85%. The glass ceramic also includes a display apparatus that has a display device which is designed to display different operating conditions with different colours and/or symbols.

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Номер записи: 3
12-04-2012 дата публикации

Lithium ion conductor, method of preparing the same, and lithium air battery including the lithium ion conductor

Номер: US20120088163A1
Автор: Dong-Joon Lee, Nobuyuki Imanishi, Osamu Yamamoto, Woo-sung Jeon, Yasuo Takeda, Young-gyoon Ryu
Принадлежит: Mie University NUC, SAMSUNG ELECTRONICS CO LTD

A lithium ion conductor, a method of preparing the same, and a lithium air battery including the lithium ion conductor. The lithium ion conductor includes a phosphorus-based compound having a characteristic peak at a Raman shift of about 720˜770 cm −1 on a Raman spectrum of the phosphorus-based compound.

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Номер записи: 4
07-02-2013 дата публикации

Moldable Ceramics for Mass Spectrometry Applications

Номер: US20130032710A1
Автор: Matt A. Lasater
Принадлежит: Thermo Finnigan LLC

A glass ceramic including an alkali metal earth oxide, e.g. SrO suitable for overmolding a RF component provides a good RF response and good mechanical robustness. Specifically, SrO reduces the flow temperature of the ceramic while maintaining the RF and mechanical performance. The resulting glass formulation contains 10-50 mol % SrO, 5-30 mol % Al 2 O 3 , and 20-60 mol % B 2 O 3 .

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Номер записи: 5
21-03-2013 дата публикации

TRANSPARENT GLASS CERAMIC EMITTING WHITE LIGHT AND PREPARATION METHOD THEREOF

Номер: US20130069005A1
Автор: Ma Wenbo, Weng Fangyi, Zhou Mingjie
Принадлежит:

A transparent glass ceramic emitting white light and preparation method thereof are provided. The chemical formula of the transparent glass ceramic is aSiO.bAlO.cNa.dCeF.xDyF, wherein a, b, c, d, and x are mole fractions, a is 35˜50, b is 15˜30, c is 5˜20, d is 5˜20, x is 0.01˜1, and a+b+c+d=100. The transparent glass ceramic can be substituted for the combination of epoxy resin or silica gel and fluorescent powder to seal LED. The transparent glass ceramic has strong excitation spectrum with broadband at ultraviolet area, and can emit strong white light under the excitation of ultraviolet light. 1. A transparent glass ceramic emitting white light , wherein said transparent glass ceramic emitting white light has the chemical formula of aSiO.bAlO.cNaF.dCeF.xDyF , wherein a , b , c , d , and x are mole fractions , a+b+c+d=100 , a is in the range of 35 to 50 , b is in the range of 15 to 30 , c is in the range of 5 to 20 , d is in the range of 5 to 20 , x is in the range of 0.01 to 1.2. A transparent glass ceramic emitting white light as in claim 1 , wherein a is in the range of 40 to 50 claim 1 , b is in the range of 20 to 30 claim 1 , c is in the range of 10 to 20 claim 1 , d is in the range of 10 to 20 claim 1 , x is in the range of 0.1 to 1.3. A preparation method of transparent glass ceramic emitting white light claim 1 , comprising:{'sub': 2', '2', '3', '3', '3, 'step 1: providing silica, alumina, sodium fluoride, cerium fluoride and dysprosium fluoride according to the stoichiometric ratio, said stoichiometric ratio is mole ratio of corresponding elements in the chemical formula of aSiO.bAlO.cNaF.dCeF.xDyF, wherein a is in the range of 35 to 50, b is in the range of 15 to 30, c is in the range of 5 to 20, d is in the range of 5 to 20, x is in the range of 0.01 to 1;'}step 2: mixing and grinding the compounds of step 1 uniformly, heating at high temperature, keeping the temperature constant to form mixed melt;step 3: pouring the mixed melt obtained in step 2 into ...

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Номер записи: 6
21-03-2013 дата публикации

Display assembly comprising a glass-ceramic plate

Номер: US20130070451A1
Автор: Bertrand Charpentier, Jean-Philippe Mulet, Michael Bourgeois, Pablo Vilato
Принадлежит: Eurokera SNC

Display assembly 1 comprising, on the one hand, a glass-ceramic plate 2 of the lithium aluminosilicate type, the optical transmission of which for a thickness of 4 mm is between 0.2% and 4% for at least one wavelength between 400 and 500 nm and, on the other hand, a luminous device 4, characterized in that the luminous device 4 comprises at least one polychromatic light source 5 having at least a first emission of nonzero intensity at said wavelength between 400 and 500 nm and at least a second emission of more than 500 nm, and such that the positioning of said source 5 is designed to allow display through said glass-ceramic plate 2.

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Номер записи: 7
04-04-2013 дата публикации

Li2O-Al2O3-SiO2 BASED CRYSTALLIZED GLASS AND PRODUCTION METHOD FOR THE SAME

Номер: US20130085058A1
Автор: Kosuke Kawamoto, Shingo Nakane
Принадлежит: Nippon Electric Glass Co Ltd

An object of the present invention is to provide a Li 2 O—Al 2 O 3 —SiO 2 based crystallized glass with excellent bubble quality even without using As 2 O 3 or Sb 2 O 3 as a fining agent and a method for producing the same. The Li 2 O—Al 2 O 3 —SiO 2 based crystallized glass of the present invention is a Li 2 O—Al 2 O 3 —SiO 2 based crystallized glass which does not substantially comprise As 2 O 3 and Sb 2 O 3 and comprises at least one of Cl, CeO 2 and SnO 2 , and has a S content of not more than 10 ppm in terms of SO 3 .

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Номер записи: 8
02-05-2013 дата публикации

VITROCERAMIC GLASS COMPOSITIONS FOR GASKETS OF APPARATUSES OPERATING AT HIGH TEMPERATURES AND ASSEMBLING METHOD USING SAID COMPOSITIONS

Номер: US20130108946A1
Автор: Connelly Andrew, Khedim Hichem
Принадлежит: Commissariat A L'Energie Atomique Et Aux Energies Alternatives

A vitroceramic glass composition consisting of SiO, AlO, and CaO or of SiO, AlO, CaO and SrO or of SiO, AlOand LaOis provided. In addition, a method and assembly of at least two parts using said composition is provided. Also, a gasket and assembly obtained by this method as well as a high temperature electrolyzer (HTE) or solid oxide fuel cell (SOFC) comprising this gasket or this assembly are provided. 1. A vitro ceramic glass composition , wherein the composition is selected from the group consisting of: [{'sub': '2', '36 to 43% of SiO;'}, {'sub': 2', '3, '9 to 13% of AlO;'}, '38 to 50% of CaO; and of one or several oxide(s) selected from the group consisting of the following oxides in the following molar percentages:', '4 to 5% of ZnO;', {'sub': '2', '2 to 9% of MnO;'}, {'sub': 2', '3, '2 to 6% of BO;'}, {'sub': 2', '3, '0.1 to 1% of CrO;'}, {'sub': '2', '0.1 to 4% of TiO;'}], 'a glass composition (A) comprising molar percentages of [{'sub': '2', '43 to 48% of SiO;'}, {'sub': 2', '3, '4 to 5% of AlO;'}, '8 to 10% of CaO;', '34 to 39% of SrO; and optionally of one or several oxide(s) selected from the group consisting of the following oxides in the following molar percentages:', '4 to 5% of ZnO;', {'sub': '2', '2 to 9% of MnO;'}, {'sub': 2', '3, '2 to 5% of BO;'}, {'sub': 2', '3, '0.1 to 1% of CrO; and'}], 'a glass composition (B) comprising molar percentages of [{'sub': '2', '61 to 65% of SiO;'}, {'sub': 2', '3, '14 to 15% of AlO;'}, {'sub': 2', '3, '18 to 20% of LaO; and optionally of one or several oxide(s) selected from the following oxides in the following molar percentages, '4 to 5% of ZnO;', {'sub': '2', '4 to 5% of MnO;'}, {'sub': 2', '3, '2 to 3% of BO;'}, '4 to 5% of CaO', {'sub': 2', '3, '0.1 to 1% of CrO'}], 'a glass composition (C) comprising molar percentages of2. The glass composition according to claim 1 , which at the end of its elaboration and before any heat treatment only consists of an amorphous glassy phase.3. The glass composition according ...

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Номер записи: 9
16-05-2013 дата публикации

GLASS CERAMICS FOR USE AS A DIELECTRIC FOR GIGAHERTZ APPLICATIONS

Номер: US20130120193A1
Автор: Hoppe Bernd, Kluge Michael, Knoener Stephan, Letz Martin, Ruedinger Bernd, Seiler Daniela
Принадлежит: SCHOTT AG

A glass-ceramic which is particularly suitable as dielectric for use in the high-frequency range, in particular as dielectric resonator, as electronic frequency filter element or as antenna element is disclosed. The glass-ceramic has at least the following constituents (in mol % on an oxide basis): 5-50% of SiO, 0-20% of AlO, 0-25% of BO, 0-25% of BaO, 10-60% of TiO, 5-35% of ReO, where Ba can be partly replaced by Sr, Ca, Mg, where Re is a lanthanide or yttrium and where Ti can be partly replaced by Zr, Hf, Y, Nb, V, Ta. 3. The glass-ceramic according to claim 1 , in which up to 10% of the barium is replaced.4. The glass-ceramic according to claim 1 , in which up to 10% of the titanium is replaced.5. The glass-ceramic according to claim 1 , which additionally contains from 0.01 to 3 mol % of at least one refining agent.6. The glass-ceramic according to claim 5 , in which the at least one refining agent is selected from the group consisting of SbOand AsO.7. The glass-ceramic according to claim 1 , which has a dielectric loss (tan δ) of not more than 10in the high-frequency range (frequency f>200 MHz).8. The glass-ceramic according to claim 1 , having a relative permittivity ∈ of at least 15.9. The glass-ceramic according to claim 1 , wherein the absolute value of the temperature dependence of the resonance frequency |τ| is not more than 200 ppm/IC.10. The glass-ceramic according to claim 1 , wherein the absolute value of the temperature dependence of the resonance frequency |τ| is not more than 10 ppm/K.11. The glass-ceramic according to claim 1 , which contains at least one mixed crystal phase based on RE claim 1 , Ti claim 1 , Si claim 1 , O claim 1 , Ba claim 1 , where Ba can be at least partly replaced by Sr claim 1 , Ca claim 1 , Mg claim 1 , where RE is a lanthanide or yttrium and where Ti can be at least partly replaced by Zr claim 1 , Hf claim 1 , Y claim 1 , Nb claim 1 , V claim 1 , Ta.12. The glass-ceramic according to claim 1 , which contains at least one ...

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Номер записи: 10
23-05-2013 дата публикации

Li2O-Al2O3-SiO2-BASED CRYSTALLIZED GLASS

Номер: US20130130887A1
Автор: Kosuke Kawamoto, Shingo Nakane
Принадлежит: Nippon Electric Glass Co Ltd

Provided is a Li 2 O—Al 2 O 3 —SiO 2 -based crystallized glass, comprising, as a composition in terms of mass %, 55 to 75% of SiO 2 , 20.5 to 27% of Al 2 O 3 , 2% or more of Li 2 O, 1.5 to 3% of TiO 2 , 3.8 to 5% of TiO 2 +ZrO 2 , and 0.1 to 0.5% of SnO 2 , and satisfying the relationships of 3.7≦Li 2 O+0.741MgO+0.367ZnO≦4.5 and SrO+1.847CaO≦0.5.

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Номер записи: 11
27-06-2013 дата публикации

Transparent or transparent colored lithium aluminium silicate glass ceramic articles having adapted thermal expansion and use thereof

Номер: US20130164509A1
Автор: Evelin Weiss, Friedrich Siebers, Klaus Schoenberger
Принадлежит: SCHOTT AG

Transparent or transparent dyed lithium aluminium silicate (LAS) glass ceramic material is provided that has an adapted thermal expansion. The material includes high-quartz mixed crystals as the predominant crystalline phase, and a thermal expansion between room temperature and 700° C. from 1.0 to 2.5·10 −6 /K.

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Номер записи: 12
11-07-2013 дата публикации

Beta-quartz glass ceramics and related precursor glasses

Номер: US20130178353A1
Автор: Delavand Ovono Ovono, Isabelle Marie Melscoët-Chauvel, Marie Jacqueline Monique Comte, Philippe Pradeau
Принадлежит: Eurokera SNC

β-quartz glass-ceramics, the composition of which is most particularly optimized, with reference to the refining of their precursor glasses, with reference to good resistance to devitrification of said precursor glasses and with reference to their resistance to temperature ageing, articles comprising such glass-ceramics, lithium alumino-silicate glasses, which are precursors of such glass-ceramics, as well as methods for preparing such glass-ceramics and articles.

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Номер записи: 13
08-08-2013 дата публикации

GLASS CERAMIC AS A COOKTOP FOR INDUCTION HEATING HAVING IMPROVED COLORED DISPLAY CAPABILITY AND HEAT SHIELDING, METHOD FOR PRODUCING SUCH A COOKTOP, AND USE OF SUCH A COOKTOP

Номер: US20130201678A1
Автор: Gabel Falk, Siebers Friedrich, Weiss Evelin
Принадлежит: SCHOTT AG

A glass ceramic as cooktop for induction heating having improved colored display capability and heat shielding is provided. The cooktop includes a transparent, dyed glass ceramic plate having high-quartz mixed crystals as a predominant crystal phase. The glass ceramic contains none of the chemical refining agents arsenic oxide and/or antimony oxide and has a transmittance values greater than 0.4% at at least one wavelength in the blue spectrum between 380 and 500 nm, a transmittance >2% at 630 nm, a transmittance of less than 45% at 1600 nm, and a light transmittance of less than 2.5% in the visible spectrum. 19.-. (canceled)10. A glass ceramic suitable for use as a cooktop for induction heating having improved colored display capability and heat shielding , comprising:a transparent, dyed glass ceramic plate having high-quartz mixed crystals as a predominant crystal phase, wherein the glass ceramic plate contains none of the chemical refining agents arsenic oxide or antimony oxide, apart from inevitable traces; >0.4% at at least one wavelength in a blue spectrum between 380 and 500 nm,', '>2% at 630 nm,', '<45% at 1600 nm; and, 'transmittance values of the glass ceramic plate ofa light transmittance in a visible spectrum of less than 2.5%.11. The glass ceramic according to claim 10 , wherein the transmittance values of the glass ceramic plate comprises <40% at 1600 nm.12. The glass ceramic according to claim 10 , wherein the transmittance values of the glass ceramic plate of greater than 0.1% in the range of visible light in the entire wavelength range greater than 500 nm claim 10 , a transmittance of <12% at 630 nm claim 10 , a transmittance of greater than 30% in the near infrared at 950 nm claim 10 , and a transmittance of 0.5-2% in the visible spectrum.15. The glass ceramic according to claim 10 , further comprising a glass melt temperature of greater than 1700° C. and a bubble number of less than 3 bubbles/kg.16. The glass ceramic according to claim 15 , ...

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Номер записи: 14
29-08-2013 дата публикации

TRANSPARENT LITHIUM GLASS-CERAMIC MATERIAL, PRODUCTION AND USE THEREOF

Номер: US20130224493A1
Автор: Becker Otmar, Benhaar Guenther, Bug Michael, Gabel Falk, Glasenapp Michael, Goetz Helga, Grewer Petra, Hahn Gerhard, JOHANSSON Thoralf, Luther Veit, Ortmann Jan-Peter, Schroeder Friedrich-Georg, Schuler Thomas, Striegler Harald, Wennemann Dietmar
Принадлежит: SCHOTT AG

A lithium-containing, transparent glass-ceramic material is provided. The material has low thermal expansion and has an amorphous, lithium-depleted, vitreous surface zone. The zone is at least 50 nm thick on all sides and encloses a crystalline interior, which has high transmission. The material includes a transition region connecting the zone and the interior. 131-. (canceled)32. A lithium-containing , transparent glass-ceramic material that is smooth on all sides and has a low thermal expansion and a high transmission , the glass-ceramic material having an amorphous , lithium depleted , predominantly vitreous surface zone that is at least 50 nm thick on all sides and surrounds a crystalline interior , wherein the vitreous surface zone is connected to the crystalline interior by a transition region.33. The glass-ceramic material of claim 32 , wherein the vitreous surface zone has a thickness of 50 to 5000 nm.34. The glass-ceramic material of claim 32 , wherein the thickness is not more than 200 nm.35. The glass-ceramic material of claim 32 , comprising a principal crystal phase of more than 50% by weight of beta-quartz solid solutions.36. The glass-ceramic material of claim 35 , wherein the beta-quartz solid solutions have a lattice constant from 5.18 Å to 5.19 Å.37. The glass-ceramic material of claim 32 , wherein the vitreous surface zone comprises not more than 10% by weight of crystals and the crystalline interior comprises at least 50% by weight of crystals.38. The glass-ceramic material of claim 35 , further comprising a refractive index difference between a glass phase and the principal crystal phase claim 35 , in a range between 0.001 and 0.05.39. The glass-ceramic material of claim 32 , wherein the vitreous surface zone has a lower refractive index than the crystalline interior.40. The glass-ceramic material of claim 32 , further comprising a difference in refractive indices between a residual glass phase of the vitreous surface zone and a crystal phase of ...

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Номер записи: 15
05-09-2013 дата публикации

Glass Substrate For Information Recording Medium

Номер: US20130231236A1
Автор: Kajita Hiroshi, KAWAI Hideki, Mori Toshiharu, Oogaki Akio
Принадлежит: Konica Minolta Advanced Layers, Inc.

The present invention relates to the glass substrate for an information recording medium comprising the following glass components: SiO: 52 to 67; AlO: 8 to 20; BO: 0 to 6, with these three oxides FMO: 70 to 85; LiO: 0.5 to 4; NaO: 1 to 8; KO: 0 to 5; and with these three oxides R2O: 5 to 15; MgO: 2 to 9; CaO: 0.1 to 5; BaO: 0 to 3; SrO: 0 to 3; ZnO: 0 to 5; and with these five oxides: 5 to 15; YO: 0 to 4; LaO: 0 to 4; GdO: 0 to 4; CeO: 0 to 4; TiO: 1 to 7; HfO: 0 to 2; ZrO: 0 to 5; NbO: 0.2 to 5; and TaO: 0 to 5, and satisfies LiO/R2O: 0.05 to 0.35; LiO/FMO: 0.005 to 0.035; LiO/(MgO+ZnO): less than 2 and NbO/SiO: 0.01 to 0.075. 1. A glass substrate for an information recording medium , comprising the following glass components in % by weight:{'sub': '2', 'SiO: 52 to 67%;'}{'sub': 2', '3, 'AlO: 8 to 20%;'}{'sub': 2', '3, 'BO: 0 to 6% (including zero);'}{'sub': 2', '2', '3', '2', '3, '(wherein FMO═SiO+AlO+BO=70 to 85%);'}{'sub': '2', 'LiO: 0.5 to 4%;'}{'sub': '2', 'NaO: 1 to 8%;'}{'sub': '2', 'KO: 0 to 5% (including zero);'}{'sub': 2', '2', '2, '(wherein R2O═LiO+NaO+KO=5 to 15%);'}MgO: 2 to 9%;CaO: 0.1 to 5%;BaO: 0 to 3% (including zero);SrO: 0 to 3% (including zero);ZnO: 0 to 5% (including zero);(wherein MgO+CaO+BaO+SrO+ZnO=5 to 15%);{'sub': 2', '3, 'YO: 0 to 4% (including zero);'}{'sub': 2', '3, 'LaO: 0 to 4% (including zero);'}{'sub': 2', '3, 'GdO: 0 to 4% (including zero);'}{'sub': '2', 'CeO: 0 to 4% (including zero);'}{'sub': '2', 'TiO: 1 to 7%;'}{'sub': '2', 'HfO: 0 to 2% (including zero);'}{'sub': '2', 'ZrO: 0 to 5% (including zero);'}{'sub': 2', '5, 'NbO: 0.2 to 5%; and'}{'sub': 2', '5, 'TaO: 0 to 5% (including zero); and'} [{'br': None, 'sub': '2', 'LiO/R2O: 0.05 to 0.35\u2003\u2003(1),'}, {'br': None, 'sub': '2', 'LiO/FMO: 0.005 to 0.035\u2003\u2003(2),'}, {'br': None, 'sub': '2', 'LiO/(MgO+ZnO): less than 2\u2003\u2003(3) and'}, {'br': None, 'sub': 2', '5', '2, 'NbO/SiO: 0.01 to 0.075\u2003\u2003(4).'}], 'satisfying the following composition relation ...

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Номер записи: 16
26-09-2013 дата публикации

CRYSTAL GLASS HAVING REFRACTIVE INDEX HIGHER THAN 1.53 WITHOUT A CONTENT OF COMPOUNDS OF LEAD, BARIUM AND ARSENIC

Номер: US20130252797A1
Автор: Korenský Jan, Rada Miroslav, Sázavová Kveta, Vavrena Jiri
Принадлежит:

This invention relates to a crystal glass having a refractive index higher than 1.53 and a high mechanical strength, free of any content of compounds of lead, barium and arsenic and guaranteeing maximum safety for health, which consists in that it comprises by weight: 55-70% SiO, 0.05-3.5% LiO, 2-15% NaO, more than 3% and less than 5% or more than 15% and less than 19% KO, 5 to 10% CaO, more than 1% and less than 4% or more than 7% and less than 8% ZnO, 0.1-3.5% BO, 0.1-3.5% AlO, 0.1-3.5% TiO, less than 3.5% ZrO, 0.05-1.5% GdO,0.05-1% PO, 0.1-1% SbO, 2. The crystal glass according to claim 1 , comprising by weight 0.05 to 0.8 wt % GdOand 0.05 to 0.8% POand the GdO/POratio is at least equal to 1:1.3. The crystal glass according to claim 1 , comprising by weight 0.05 to 0.15 wt % GdOand 0.1 to 0.8% POand the GdO/POratio is at least equal to 1:2.4. The crystal glass according to claim 1 , comprising by weight 0.1 wt % GdOand 0.2 to 0.8% POand the GdO/POratio is at least equal to 1:2.5. The crystal glass according to claim 1 , wherein it is clarified and discoloured by usual clarifying and discolouring components and/or mixtures thereof in the usual concentrations. The invention relates to a crystal glass with a refractive index higher than 1.53 and high mechanical strength that does not contain any compounds of lead, barium and arsenic and intended for the production of artificial jewellery and chandelier semi-finished products and final products made from them. This glass is also intended for the manufacture of glass chandeliers and household items.This glass is characterized by a very good workability in melting, shaping and polishing, its brightness reaches at least 93%, its density is at least 2.54 g/cmand its Young's modulus of elasticity is above 90 GPa and it is characterized by increased chemical resistance, reduced solarization and reduced toxicity, ensuring maximum health safety in common use of the products from this glass.High-quality crystal glasses have ...

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Номер записи: 17
17-10-2013 дата публикации

WHITE, OPAQUE BETA-SPODUMENE/RUTILE GLASS-CERAMIC ARTICLES AND METHODS FOR MAKING THE SAME

Номер: US20130274085A1
Автор: Beall George Halsey, Comte Marie Jacqueline Monique, Dale George Owen, Pinckney Linda Ruth, Smith Charlene Marie, Stewart Ronald Leroy, Tietje Steven Alvin
Принадлежит:

Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO; 10.5-17 AlO; 5-13 LiO; 0-4 ZnO; 0-8 MgO; 2-5 TiO; 0-4 BO; 0-5 NaO; 0-4 KO; 0-2 ZrO; 0-7 PO; 0-0.3 FeO; 0-2 MnOx; and 0.05-0.2 SnO. Additionally, these glasses and glass-ceramics exhibit the following criteria: 2. The glass-ceramic according to claim 1 , wherein the composition claim 1 , in mole % claim 1 , comprises:{'sub': '2', 'i. 67-74 SiO;'}{'sub': 2', '3, 'ii. 11-15 AlO;'}{'sub': '2', 'iii. 5.5-9 LiO;'}iv. 0.5-2 ZnO;v. 2-4.5 MgO;{'sub': '2', 'vi. 3-4.5 TiO;'}{'sub': 2', '3, 'vii. 0-2.2 BO;'}{'sub': '2', 'viii. 0-1 NaO;'}{'sub': '2', 'ix. 0-1 KO;'}{'sub': '2', 'x. 0-1 ZrO;'}{'sub': 2', '5, 'xi. 0-4 PO'}{'sub': 2', '3, 'xii. 0-0.1 FeO;'}xiii. 0-1.5 MnOx; and{'sub': '2', 'xiv. 0.08-0.16 SnO.'}4. The glass-ceramic according to claim 1 , wherein the at least one Ti-containing crystalline phase further comprises any one of anatase claim 1 , a magnesium titanate claim 1 , an aluminum titanate claim 1 , or mixtures of rutile and two or more of anatase claim 1 , a magnesium titanate claim 1 , and an aluminum titanate.5. The glass-ceramic according to claim 1 , further comprising cordierite or mixtures of rutile claim 1 , cordierite claim 1 , and one or more of anatase claim 1 , a magnesium titanate claim 1 , and an aluminum titanate.6. The glass-ceramic according to claim 1 , wherein the at least one Ti-containing crystalline phase comprises rutile comprising about 2-6 wt % of the crystalline phases of the glass-ceramic.7. The glass-ceramic according to claim 1 , wherein the one or more β-spodumene solid solutions comprises at least about 75 wt % of the crystalline phases of the glass-ceramic.8. The glass-ceramic according to claim 1 , wherein the optional one or more crystalline phase comprises:i. about 1-10 wt % of the ...

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Номер записи: 18
31-10-2013 дата публикации

Crystallized glass

Номер: US20130288876A1
Автор: Shingo Nakane, Tai Fujisawa
Принадлежит: Nippon Electric Glass Co Ltd

Provided is crystallized glass, comprising, as a glass composition in terms of mass %, 55 to 73% of SiO 2 , 17 to 25% of Al 2 O 3 , 2 to 5% of Li 2 O, 2.5 to 5.5% of TiO 2 , 0 to 2.3% of ZrO 2 , 0.2 to 0.9% of SnO 2 , and 0.005 to 0.09% of V 2 O 5 , wherein the crystallized glass is substantially free of As 2 O 3 and Sb 2 O 3 .

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Номер записи: 19
07-11-2013 дата публикации

WHITE, OPAQUE, ß-SPODUMENE/RUTILE GLASS-CERAMICS; ARTICLES COMPRISING THE SAME; AND METHODS FOR MAKING THE SAME

Номер: US20130296155A1
Автор: Charlene Marie Smith, George Halsey Beall, George Owen Dale, Linda Ruth Pinckney, Marie Jacqueline Monique Comte, Ronald Leroy Stewart, Steven Alvin Tietje
Принадлежит: Corning Inc

Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO 2 ; 10.5-17 Al 2 O 3 ; 5-13 Li 2 O; 0-4 ZnO; 0-8 MgO; 2-5 TiO 2 ; 0-4 B 2 O 3 ; 0-5 Na 2 O; 0-4 K 2 O; 0-2 ZrO 2 ; 0-7 P 2 O 5 ; 0-0.3 Fe 2 O 3 ; 0-2 MnOx; and 0.05-0.2 SnO 2 . Additionally, these glasses and glass-ceramics exhibit the following criteria: a. a ratio: [ Li 2  O + Na 2  O + K 2  O + MgO + ZnO _ ]  [ Al 2  O 3 + B 2  O 3 ] between 0.7 to 1.5; b. a ratio: [ TiO 2 + SnO 2 _ ]  [ SiO 2 + B 2  O 3 ] greater than 0.04. Furthermore, the glass-ceramics exhibit an opacity≧about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance included of a* between −3 and +3, b* between −6 and +6, and L* between 88 and 97.

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Номер записи: 20
02-01-2014 дата публикации

PROCESS FOR OBTAINING A GLASS-CERAMIC MATERIAL THAT IS OPTICALLY TRANSPARENT IN THE INFRARED

Номер: US20140000315A1
Автор: Calvez Laurent, Delaizir Gaelle, Hubert Mathieu, Zhang Xiang Hua
Принадлежит:

A process is provided for obtaining a glassy material that is optically transparent to infrared radiation. The process includes: a step of amorphization, by mechanosynthesis, of an assembly of starting elements including at least one metallic element and at least one chalcogenide element, making it possible to form an amorphous powder; a step of hot densification, in a mould of predetermined dimensions, of the amorphous powder, making it possible to obtain a glass; and heat treatment, carried out during or after the hot densification step, in which the glass is heated to a temperature at which a portion of the glass is converted from an amorphous state to a crystalline state, making it possible to obtain, after cooling, a glass-ceramic. 1. A method for obtaining a material that is vitreous and optically transparent to infrared radiation , wherein the method comprises the following steps:amorphization, by mechanosynthesis, of a set of initial elements comprising at least one metallic element and at least one chalcogenide element, making it possible to form an amorphous powder;hot densification, in a molding device of predetermined dimensions, of the amorphous powder making it possible to obtain a glass; andthermal treatment, performed during or after said step of hot densification, in which said glass is heated to a temperature at which a part of said glass is converted from an amorphous state into an substantially crystalline state, making it possible to obtain, after cooling, a glass-ceramic type of massive glass.2. The method according to claim 1 , wherein said at least one metal element belongs to the group comprising: Ge claim 1 , As claim 1 , Sb claim 1 , Ga claim 1 , Sn claim 1 , In claim 1 , in a content of 0 to 35 mol % claim 1 , and wherein said at least one chalcogenide element belongs to the group comprising: S claim 1 , Se claim 1 , Te claim 1 , in a content of 40 to 90 mol %.3. The method according to claim 1 , wherein said set of initial elements ...

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Номер записи: 21
02-01-2014 дата публикации

Glass-ceramic substrates for semiconductor processing

Номер: US20140001485A1
Автор: George Halsey Beall, Gregory Albert Merkel, James Gregory Couillard, Sasha Marjanovic
Принадлежит: Corning Inc

Embodiments are directed to glass-ceramic substrates with a III-V semiconductor layer, for example, a GaN layer that can be used in LED lighting devices. The glass-ceramics material is in the anorthite-rutile (CaAl 2 Si 2 O 8 +TiO 2 ) family or in the cordierite-enstatite (SiO 2 —Al 2 O 3 —MgO—TiO 2 ) family.

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Номер записи: 22
09-01-2014 дата публикации

CERAMIC PARTICLE AND PROCESS FOR MAKING THE SAME

Номер: US20140011658A1
Автор: Dickson Kevin R., Fuss Tihana, SAN-MIGUEL Laurie, Stephens Walter T.
Принадлежит: SAINT-GOBAIN CERAMICS & PLASTICS, INC.

A ceramic particle with at least two microstructural phases comprising an amorphous phase, representing between 30 volume percent and 70 volume percent of the particle, and a first substantially crystalline phase comprising a plurality of predominately crystalline regions distributed through the amorphous phase is disclosed. A process for making the ceramic particle is also disclosed. 1. A sintered ceramic particle , comprising: at least two microstructural phases comprising an amorphous phase , representing between 30 volume percent and 70 volume percent of said particle , and a first substantially crystalline phase comprising a plurality of predominately crystalline regions distributed through said amorphous phase.2. The sintered ceramic particle of wherein said amorphous phase forms a continuous matrix through said particle and said crystalline regions collectively form a discontinuous phase.3. The sintered ceramic particle of wherein said amorphous phase has a coefficient of thermal expansion claim 2 , said first substantially crystalline phase has a coefficient of thermal expansion and said first substantially crystalline phase's coefficient of thermal expansion is no less than said amorphous phase's coefficient of thermal expansion.4. The sintered ceramic particle of wherein said first substantially crystalline phase's coefficient of thermal expansion is at least 5% greater than said amorphous phase's coefficient of thermal expansion.5. The sintered ceramic particle of wherein said first substantially crystalline phase's coefficient of thermal expansion is at least 10% greater than said amorphous phase's coefficient of thermal expansion.6. The sintered ceramic particle of wherein said amorphous phase abuts at least one of said predominately crystalline regions at an interface and said interface exhibits stress.7. The sintered ceramic particle of wherein said particle exhibits compressive stress at said interface.8. The sintered ceramic particle of claim I ...

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Номер записи: 23
30-01-2014 дата публикации

LITHIUM CONTAINING GLASS WITH HIGH OXIDIZED IRON CONTENT AND METHOD OF MAKING SAME

Номер: US20140029088A1
Автор: Arbab Mehran, Goodwin George B., Harris Caroline S., Shelestak Larry J.
Принадлежит: PPG Industries Ohio, Inc.

A low infrared absorbing lithium glass includes FeO in the range of 0.0005-0.015 wt %, more preferably 0.001-0.010 wt %, and a redox ratio in the range of 0.005-0.15, more preferably in the range of 0.005-010. The glass can be chemically tempered and used to provide a ballistic viewing cover for night vision goggles or scope. A method is provided to change a glass making process from making a high infrared absorbing lithium glass having FeO in the range of 0.02 to 0.04 wt % and a redox ratio in the range of 0.2 to 0.4 to the low infrared absorbing lithium glass by adding additional oxidizers to the batch materials. A second method is provided to change a glass making process from making a low infrared absorbing lithium glass to the high infrared absorbing lithium glass by adding additional reducers to the batch material. In one embodiment of the invention the oxidizer is CeO. An embodiment of the invention covers a glass made according to the method. 2. The glass composition according to claim 1 , wherein cerium oxide is in the range of 0.01 to 0.15 wt %.3. The glass composition according to claim 1 , wherein the FeO is in the range of 0.001-0.010 wt %.4. The glass composition according to claim 1 , wherein the FeO(total iron) is in the range of 50 to 200 ppm.5. The glass composition according to claim 1 , wherein the redox ratio is in the range of 0.005 to 0.10.6. The glass composition according to claim 1 , wherein the oxidizer is selected from the group of cerium oxide in the range of 0.02 to 0.45 wt % claim 1 , manganese oxide in the range of 0.02 to 0.50 wt % and mixtures thereof.7. The glass composition according to claim 1 , wherein the FeO is in the range of 0.001-0.010 wt %; the total iron is in the range of 50 to 200 ppm; the redox ratio is in the range of 0.005 to 0.10 and the oxidizer is selected from the group of cerium oxide in the range of 0.02 to 0.45 wt % claim 1 , manganese oxide in the range of 0.02 to 0.50 wt % and mixtures thereof.9. The device ...

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Номер записи: 24
06-01-2022 дата публикации

GLASS ARTICLES EXHIBITING HIGH COMPRESSIVE STRESS, AUTOMOTIVE INTERIOR SYSTEMS THAT INCLUDE SUCH GLASS ARTICLES AND METHODS FOR MAKING THE SAME

Номер: US20220002186A1
Автор: Gross Timothy Michael
Принадлежит:

Embodiments of this disclosure pertain to glass articles with a glass composition including about 65 mol % or greater SiO; 8 mol % or greater AlO; from about 3.5 mol % to about 16 mol % NaO; up to about 5 mol % PO, and up to about 15 mol % ZnO. In one or more embodiments, the glass composition includes about 56% or greater SiO; about 8 mol % or greater AlO; from about 3.5 mol % to about 16 mol % NaO; up to about 1 mol % PO; and up to about 15 mol % ZnO. In some embodiments, the glass article exhibits a CS at a depth of greater than 30 micrometers of about 1 GPa or greater. Embodiments of an automotive interior system including such glass articles and methods of making glass articles are also disclosed. 1. A glass article comprising a glass composition , the glass composition comprising:{'sub': '2', 'SiOin an amount of about 65 mol % or greater;'}{'sub': 2', '3, 'AlOin an amount of about 8 mol % or greater;'}{'sub': '2', 'NaO in an amount from about 3.5 mol % to about 16 mol %;'}{'sub': 2', '5, 'PO; and'}{'sub': 2', '5, 'ZnO, wherein POis present in an amount up to about 5 mol %, and wherein ZnO is present in an amount up to about 15 mol %.'}2. The glass article of claim 1 , wherein the glass composition comprises SiOin an amount in a range from about 65 mol % to about 77 mol %; and AlOin an amount in a range from about 8 mol % to about 24 mol %.3. The glass article of claim 1 , wherein the glass composition comprises KO in an amount from about 0 mol % to about 11 mol %; MgO in an amount from about 0 mol % to about 13 mol %; and SrO in an amount from about 0 mol % to about 11.5 mol %.4. The glass article of claim 1 , wherein the glass composition comprises SnOin an amount from about 0 mol % to about 0.5 mol %.5. The glass article of claim 1 , wherein the glass composition comprises SiOin an amount from about 65 mol % to about 68 mol %; and AlOin an amount from about 10 mol % to about 15 mol %.6. The glass article of claim 1 , wherein the glass composition comprises ...

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Номер записи: 25
07-01-2021 дата публикации

HIGH STRENGTH GLASS-CERAMICS HAVING PETALITE AND LITHIUM SILICATE STRUCTURES

Номер: US20210002164A1
Автор: Beall George Halsey, Fu Qiang, Smith Charlene Marie
Принадлежит: CORNING INCORPORATED

Glass and glass ceramic compositions having a combination of lithium silicate and petalite crystalline phases along with methods of making the glass and glass ceramic compositions are described. The compositions include LiO, SiO, and AlO. Ion-exchanged glass-ceramic articles made from the glass and glass ceramic compositions have a surface compressive stress in a range from about 100 MPa to about 500 MPa. 1. An ion-exchanged glass-ceramic article comprising LiO , SiO , and AlO , wherein: a petalite crystalline phase; and', 'a lithium silicate crystalline phase; and, 'the ion-exchanged glass-ceramic article comprisesthe ion-exchanged glass-ceramic article has a surface compressive stress in a range from about 100 MPa to about 500 MPa.2. The ion-exchanged glass-ceramic article of claim 1 , wherein the surface compressive stress is from about 100 MPa to about 250 MPa.3. The ion-exchanged glass-ceramic article of claim 1 , wherein the ion-exchanged glass-ceramic article has a depth of layer of at least about 100 μm.4. The ion-exchanged glass-ceramic article of claim 1 , wherein the ion-exchanged glass-ceramic article has a central tension of at least 10 MPa.5. The ion-exchanged glass-ceramic article of claim 1 , wherein the petalite crystalline phase is present in the ion-exchanged glass ceramic article in an amount of from 20 to 70 wt %.6. The ion-exchanged glass ceramic article of claim 1 , wherein the lithium silicate crystalline phase is present in the ion-exchanged glass ceramic article in an amount of from 20 to 60 wt %.7. The ion-exchanged glass ceramic article of claim 1 , wherein the ion-exchanged glass-ceramic article comprises:{'sub': '2', 'from about 55 to about 80 wt % SiO;'}{'sub': '2', 'from about 5 to about 20 wt % LiO;'}{'sub': 2', '3, 'from about 2 to about 20 wt % AlO;'}{'sub': '2', 'from greater than 0 to about 10 wt % ZrO; and'}{'sub': 2', '5, 'from about 0.5 to about 15 wt % PO.'}8. The ion-exchanged glass ceramic article of claim 1 , wherein the ...

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Номер записи: 26
07-01-2021 дата публикации

GLASSES AND GLASS CERAMICS INCLUDING A METAL OXIDE CONCENTRATION GRADIENT

Номер: US20210002167A1
Автор: Hu Guangli, Smith Charlene Marie, Tang Zhongzhi, Tietje Steven Alvin
Принадлежит: CORNING INCORPORATED

A glass-based article may include from about 45 mol. % to about 80 mol. % SiO; from about 0 mol. % to about 10 mol. % NaO; less than about 5 mol. % KO; a non-zero amount of AlO; and an amorphous phase and a crystalline phase. The article may further in include a stress profile comprising a surface compressive stress (CS) and a maximum central tension (CT). A ratio of LiO (mol. %) to RO (mol. %) in the article is from about 0.5 to about 1, where RO is the sum of LiO, NaO, and KO in the article. CT may be greater than or equal to about 50 MPa and less than about 100 MPa. CS may be greater than 2.0·CT. A depth of compression (DOC) of the stress profile may be greater than or equal to 0.14·t and less than or equal to 0.25·t, where t is the thickness of the article. 1. A glass-based article comprising:{'sub': '2', 'greater than or equal to 45 mol. % and less than or equal to about 80 mol. % SiO;'}{'sub': '2', 'greater than or equal to 0 mol. % and less than or equal to 10 mol. % NaO;'}{'sub': '2', 'less than 5 mol. % KO;'}{'sub': 2', '3, 'a non-zero amount of AlO;'}a first surface and a second surface opposing the first surface thereby defining a thickness (t) of the glass-based article; and the glass-based article comprises an amorphous phase and a crystalline phase;', {'sub': 2', '2', '2', '2', '2', '2, 'a ratio of LiO (mol. %) to RO (mol. %) in the glass-based article is greater than or equal to 0.5 and less than or equal to 1, where RO is the sum of LiO, NaO, and KO in the glass-based article;'}, 'CT is greater than or equal to about 50 MPa and less than about 100 MPa;', 'CS is greater than 2.0·CT; and', 'a depth of compression (DOC) of the stress profile is greater than or equal to 0.14·t and less than or equal to 0.25·t., 'a stress profile comprising a surface compressive stress (CS) and a maximum central tension (CT), wherein2. The glass-based article of claim 1 , wherein CS is greater than or equal to 150 MPa.3. The glass-based article of claim 1 , wherein CS is ...

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Номер записи: 27
07-01-2021 дата публикации

Wired and Detachable Charging-Unit of Electric Product

Номер: US20210002170A1
Автор: Chien De-Yi, CHIEN Tseng-Lu, Cian De-Ying
Принадлежит:

A wired and detachable, moveable, dis-assemble, re-assemble USB or Wireless charging-unit(s) which has minimum feet DC power delivery wire that is manual to coil, wrap within unit's own space for wire-arrangement, said each wired and detachable unit(s) cover broad area and people can chare external product(s) at any location within said area; wherein said unit(s) assembly with electric product which is at least one (1) desk, floor, wall-mounted item, light, (2) power strip, (3) selfie LED light has built-in or added-on image capture device(s). 1. A wired and detachable , re-assembly charging-unit , comprising;A charging-unit has at least one DC power delivery wire(1) connect with electric product built-in circuitry output-end(s),(2) storage within unit's built-in wire-arrangement,(3) assembly with electric device opening or base recessed compartment,(4) is coiled at outside said device by manual without elastic or spring piece.Said charging-unit has at least one (1) USB, (2) wireless (Qi), (3) USB and wireless; charging-system to charge external electric product(s).2. A wired detachable claim 1 , re-assembly charging-unit as claim 1 , wherein said electric device is power strip.3. A wired detachable claim 1 , re-assembly charging-unit as claim 1 , wherein said electric device is desk claim 1 , floor claim 1 , wall-mounted LED light.4. A wired detachable claim 1 , re-assembly charging-unit as claim 1 , wherein said electric device is LED light emit enough brightness to front person claim 1 , object(s) to capture at least (a) partial face or whole face image claim 1 , (b) partial body or whole body image claim 1 , and (c) object details image; by at least one mirror claim 1 , image capture device claim 1 , phone having camera or video function claim 1 , camera claim 1 , and video camera.5. A wired detachable claim 1 , re-assembly charging-unit as claim 1 , wherein said wired and detachable charging-unit has at least two unit(s) and each unit has minimum 4 feet to 30 ...

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Номер записи: 28
04-01-2018 дата публикации

GLASSES AND GLASS CERAMICS INCLUDING A METAL OXIDE CONCENTRATION GRADIENT

Номер: US20180002223A1
Автор: Hu Guangli, Smith Charlene Marie, Tang Zhongzhi, Tietje Steven Alvin
Принадлежит:

Embodiments of a glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t) of about 3 millimeters or less (e.g., about 1 millimeter or less), and a stress profile, wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent that is less than about −0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers, are disclosed. In some embodiments, the glass-based article includes a non-zero metal oxide concentration that varies along at least a portion of the thickness (e.g., 0·t to about 0.3·t). In some embodiments, the concentration of metal oxide or alkali metal oxide decreases from the first surface to a point between the first surface and the second surface and increases from the point to the second surface. The concentration of the metal oxide may be about 0.05 mol % or greater or about 0.5 mol % or greater throughout the thickness. Methods for forming such glass-based articles are also disclosed. 1. The use of a glass composition in a strengthened glass , the glass composition comprising in mol %:{'sub': '2', 'SiOin an amount from about 60 to about 72;'}{'sub': 2', '3, 'AlOin an amount from about 6 to about 10;'}a total amount of MgO+CaO+ZnO is from about 0.1 to about 8;{'sub': 2', '2', '2, 'a total amount of LiO+NaO+KO is from about 5 to about 15;'}{'sub': '2', 'LiO in an amount from about 6 to about 10;'}{'sub': '2', 'NaO in an amount from about 0 to about 10;'}{'sub': '2', 'KO in an amount of less than about 2; and'}{'sub': '2', 'claim-text': [{'sub': '2', 'the glass composition is substantially free of TiO;'}, {'sub': 2', '3, 'the glass composition is substantially free of FeO; and'}, {'sub': 2', '2', '2', '2, 'a ratio of LiO to (LiO+NaO+KO) is from about 0.5 to about 1.'}], 'ZrOin an amount of about 0.1 to about 1, wherein2. The use of the glass composition of claim 1 , wherein the glass composition is substantially ...

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Номер записи: 29
04-01-2018 дата публикации

ENGINEERED HIGH EXPANSION GLASS-CERAMICS HAVING NEAR LINEAR THERMAL STRAIN AND METHODS THEREOF

Номер: US20180002227A1
Автор: Dai Steve Xunhu, Lyon Nathanael L., Rodriguez Mark A.
Принадлежит:

The present invention relates to glass-ceramic compositions, as well as methods for forming such composition. In particular, the compositions include various polymorphs of silica that provide beneficial thermal expansion characteristics (e.g., a near linear thermal strain). Also described are methods of forming such compositions, as well as connectors including hermetic seals containing such compositions. 1. A method comprising:{'sub': 2', '2', '2', '3', '2', '2', '5', '2', '3, 'providing a glass-ceramic mixture configured to provide a glass-ceramic composition comprising of from about 65 wt. % to about 80 wt. % of SiO; from about 8 wt. % to about 16 wt. % of LiO; from about 2 wt. % to about 8 wt. % of AlO; from about 1 wt. % to about 8 wt. % of KO; from about 1 wt. % to about 5 wt. % of PO; from about 0.5 wt. % to about 7 wt. % of BO; and from about 0.1 wt. % to about 5 wt. % of ZnO;'}{'sub': '1', 'heating the mixture to a first temperature Tof from about 950° C. to about 1050° C.;'}{'sub': 2', '2', '2, 'rapidly cooling at a rate rgreater than about 30° C./minute to a second temperature Tof from about 400° C. to about 750° C., thereby minimizing formation of a cristobalite SiOphase within the mixture;'}{'sub': 3', '2, 'reheating the mixture to a third temperature Tof from about 750° C. to about 850° C., thereby facilitating formation of a quartz SiOphase within the mixture; and'}{'sub': '4', 'cooling the mixture to a fourth temperature Tof from about 10° C. to about 500° C., thereby forming a glass-ceramic composition.'}2. The method of claim 1 , wherein the rate ris of from about 40° C./minute to about 80° C./minute.3. The method of claim 1 , further comprising dwelling at the first temperature Tfor a first period Pconfigured to allow the mixture to flow and fill a cavity.4. The method of claim 3 , wherein the first period Pis of from about 1 minute to about 30 minutes.5. The method of claim 1 , further comprising dwelling at the second temperature Tfor a second ...

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Номер записи: 30
02-01-2020 дата публикации

Amorphous Silica Products and Methods of Producing Amorphous Silica Products

Номер: US20200002215A1
Автор: Pike Bernard G., Trom Scott D.
Принадлежит: Xaris Holdings, LLC

Methods have been developed to produce amorphous silica materials including, but not limited to, glass, container glass, fiber glass, glass bead, sheet or plate glass, glass aggregate, glass sand, abrasives, proppants, foamed glass, and manufactured glass articles. The initial processing steps include preparing a melt batch comprising at least one silica containing component and other processing or product enhancing components, melting the melt batch, and cooling the melted melt batch. The batches include high concentrations of metal oxides, slags, combustible materials, limestone, other product or process enhancing compounds and combinations thereof. 1. A method of producing a manufactured glass article , comprising: glass cullet in a concentration range of 50 wt. % to 75 wt. %;', 'iron oxide in a concentration range of 20 wt. % to 40 wt. %; and', 'fluxes in a concentration range of 5 wt. % to 40 wt. %;, 'preparing a batch comprisingmelting the batch in a furnace to melt effluent; andcooling the melt effluent to form amorphous silica particles, mass or product.2. The method of claim 1 , wherein the batch comprises a combustible material.3. The method of claim 1 , wherein the batch comprises at least one of charcoal or coal in a concentration range.4. The method of claim 1 , wherein the iron oxide comprises magnetite.5. The method of claim 1 , wherein the iron oxide consists essentially of magnetite.6. The method of claim 1 , comprising crushing the amorphous silica particles claim 1 , mass or product to form glass particles.7. The method of claim 6 , wherein the magnetite is in a concentration of 20 wt. % to 35 wt. %.8. The method of claim 7 , wherein the batch comprises at least one of limestone and calcium oxide.9. The method of claim 7 , wherein the limestone in a concentration of 10 wt. % to 40 wt. %10. The method of claim 7 , wherein the limestone in a concentration of 25 wt. % to 40 wt. %11. The method of claim 1 , wherein the glass cullet is in a ...

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Номер записи: 31
02-01-2020 дата публикации

TRANSPARENT, NEAR INFRARED-SHIELDING GLASS CERAMIC

Номер: US20200002220A1
Автор: Dejneka Matthew John, Kohl Jesse, Patil Mallanagouda Dyamanagouda
Принадлежит:

Optically transparent glass ceramic materials comprising a glass phase containing and a crystalline tungsten bronze phase comprising nanoparticles and having the formula MWO, where M includes at least one H, Li, Na, K, Rb, Cs, Ca, Sr, Ba, Zn, Cu, Ag, Sn, Cd, In, Tl, Pb, Bi, Th, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, Lu, and U, and where 0 Подробнее

Номер записи: 32
02-01-2020 дата публикации

High strength glass-ceramics having petalite and lithium silicate structures

Номер: US20200002221A1
Автор: Charlene Marie Smith, George Halsey Beall, Qiang Fu
Принадлежит: Corning Inc

Glass and glass ceramic compositions having a combination of lithium silicate and petalite crystalline phases along with methods of making the glass and glass ceramic compositions are described. The compositions are compatible with conventional rolling and float processes, are transparent or translucent, and have high mechanical strength and fracture resistance. Further, the compositions are able to be chemically tempered to even higher strength glass ceramics that are useful as large substrates in multiple applications.

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Номер записи: 33
05-01-2017 дата публикации

Methods of Fabricating Photoactive Substrates for Micro-lenses and Arrays

Номер: US20170003421A1
Автор: Bullington Jeff, Flemming Jeb H.
Принадлежит:

A method of fabrication and device made by preparing a photosensitive glass substrate comprising at least silica, lithium oxide, aluminum oxide, and cerium oxide, masking a design layout comprising form one or more micro lens on the photosensitive glass substrate, exposing at least one portion of the photosensitive glass substrate to an activating energy source, exposing the photosensitive glass substrate to a heating phase of at least ten minutes above its glass transition temperature, cooling the photo sensitive glass substrate to transform at least part of the exposed glass to a crystalline material to form a glass-crystalline substrate and etching the glass-crystalline substrate with an etchant solution to form one or more a micro lens. 1. A method to fabricate an optical comprising the steps of:a. preparing a photosensitive glass substrate comprising at least silica, lithium oxide, aluminum oxide, and cerium oxide;b. masking a halftone design with variation in optical density to delineate an optical element in the glass;c. exposing the photosensitive glass substrate to an activating energy source;d. exposing the photosensitive glass substrate to a heating phase of at least ten minutes above its glass transition temperature;e. cooling the photosensitive glass substrate to transform at least part of the exposed glass to a crystalline material to form a glass-crystalline substrate; andf. etching the glass-crystalline substrate with an etchant solution to form the one or more micro lens device.2. A method to fabricate an optical element comprising the steps of:a. preparing a photosensitive glass substrate comprising at least silica, lithium oxide, aluminum oxide, and cerium oxide;b. masking a digital mask consist transparent non transparent elements to define an diffractive optical element in the glass;c. exposing at least one portion of the photosensitive glass substrate to an activating energy source;d. exposing the photosensitive glass substrate to a heating ...

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Номер записи: 34
12-01-2017 дата публикации

ANTIMICROBIAL PHASE-SEPARATING GLASS AND GLASS CERAMIC ARTICLES AND LAMINATES

Номер: US20170006877A1
Автор: Boek Heather Debra, Mauro John Christopher, MOORE LISA ANNE, Pambianchi Michael S., Venkataraman Natesan, Weller Mark Owen
Принадлежит:

A glass laminate for an architectural element has a glass substrate coupled to the architectural element and defines a primary surface facing away from the architectural element. A phase-separable glass cladding is coupled to the primary surface. The cladding has an interconnected matrix with a first phase composition and a second phase that has a second phase composition different than the first phase composition. The second phase is distributed throughout the interconnected matrix. A copper phase is distributed within the interconnected matrix. The glass cladding has an antimicrobial log kill rate greater than about 4 as measured by an EPA Copper Test Protocol. 1. A glass laminate for an architectural element , comprising:a glass substrate coupled to the architectural element and defining a primary surface facing away from the architectural element; and an interconnected matrix having a first phase composition;', 'a second phase having a second phase composition different than the first phase composition that is distributed throughout the interconnected matrix, and', 'a copper phase distributed within the interconnected matrix,, 'a phase-separable glass cladding coupled to the primary surface, the cladding comprisingwherein the glass cladding has an antimicrobial log kill rate greater than about 4 as measured by an EPA Copper Test Protocol.2. The glass laminate of claim 1 , wherein the copper phase comprises a plurality of copper structures in at least one of a Cuand a Cuoxidation state.3. The glass laminate of claim 2 , wherein the copper structures have a largest cross-sectional dimension between about 0.1 microns and about 10 microns.4. The glass laminate of claim 1 , wherein the interconnected matrix is less corrosion resistant to at least one of water and an acid than the second phase claim 1 , and further wherein the first phase composition has a greater concentration of BOthan the second phase composition.5. The glass laminate of claim 1 , wherein the ...

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Номер записи: 35
14-01-2016 дата публикации

GLASS-CERAMIC OF LITHIUM ALUMINOSILICATE TYPE CONTAINING A SOLID SOLUTION OF B-SPODUMENE

Номер: US20160009591A1
Автор: Jousseaume Cécile, LECOMTE Emmanuel, PLEVACOVA Kamila, Vilato Pablo
Принадлежит:

A glass-ceramic of the lithium aluminosilicate type includes a solid solution of β-spodumene and exhibits, for a thickness of 4 mm; a light transmittance within a range extending from 0.3 to 2%, an optical transmittance for a wavelength of 625 nm of greater than 3.0%, an optical transmittance for a wavelength of 950 nm within a range extending from 50 to 75%, an optical transmittance for a wavelength of 1600 nm of at least 50%, and L*, a*, b* colorimetric coordinates in diffuse reflection for an illuminant D65 and a reference observer at 2° such that 15.0≦L*≦40.0, −3.0≦a*≦3.0 and −10.0≦b*≦3.0. The chemical composition of the glass-ceramic includes the following constituents, varying within the limits by weight defined: SnO0.2-0.6%, VO0.015-0.070%, CrO0.01-0.04% or BiO0.05-3.0%, FeO0.05-<0.15%, ASO+SbO%. 1. A glass-ceramic of the lithium aluminosilicate type comprising a solid solution of β-spodumene and exhibiting , for a thickness of 4 mm;a light transmittance within a range extending from 0.3 to 2%,an optical transmittance for a wavelength of 625 nm of greater than 2.0%,an optical transmittance for a wavelength of 950 nm within a range extending from 50 to 75%,an optical transmittance for a wavelength of 1600 nm of at least 50%, andL*, a*, b* colorimetric coordinates in diffuse reflection for an illuminant D65 and a reference observer at 2° such that 15.0≦L*≦40.0, −3.0≦a*≦3.0 and −10.0≦b*≦3.0, [{'sub': '2', 'SnO0.2-0.6%,'}, {'sub': 2', '5, 'VO0.015-0.070%,'}, {'sub': 2', '3', '2', '3, 'CrO0.01-0.04% or BiO0.05-3.0%'}, {'sub': 2', '3, 'FeO0.05-<0.15%'}, {'sub': 2', '3', '2', '3, 'AsO+SbO<0.1%.'}], 'said glass-ceramic being such that its chemical composition comprises the following constituents, varying within the limits by weight defined below2. The glass-ceramic according to claim 1 , wherein the content of VOis at most 0.060%.3. The glass-ceramic according to claim 1 , comprising a solid solution of β-spodumene as main crystal phase.4. The glass-ceramic according ...

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Номер записи: 36
11-01-2018 дата публикации

Lithium Silicate Diopside Glass Ceramics

Номер: US20180009701A1
Автор: Dittmer Marc, Höland Wolfram, Rampf Markus, Ritzberger Christian, Schweiger Marcel
Принадлежит:

Lithium silicate-diopside glass ceramics are described which are characterized by a controllable translucence and can be satisfactorily processed mechanically and therefore can be used in particular as restoration material in dentistry. 1. Lithium silicate-diopside glass ceramic which comprises lithium silicate as main crystal phase and diopside as further crystal phase.2. Glass ceramic according to claim 1 , which comprises 53.0 to 75.0 wt.-% SiO.3. Glass ceramic according to claim 1 , which comprises 10.0 to 23.0 wt.-% LiO.4. Glass ceramic according to claim 1 , which comprises 1.0 to 13.0 wt.-% CaO and/or 1.0 to 12.0 wt.-% MgO.5. Glass ceramic according to claim 4 , wherein the molar ratio of CaO to MgO is 0.5 to 2.0.6. Glass ceramic according to claim 1 , which comprises 0 to 8.0 O.7. Glass ceramic according to claim 1 , which comprises 0 to 10.0 wt.-% further alkali metal oxide MeO claim 1 , wherein MeO is selected from NaO claim 1 , KO claim 1 , RbO and/or CsO.8. (canceled)9. Glass ceramic according to claim 1 , which comprises 0 to 10.0 wt.-% oxide of trivalent elements MeO claim 1 , wherein MeOis selected from AlO claim 1 , BO claim 1 , YO claim 1 , LaO claim 1 , GaOand/or InO.10. (canceled)11. (canceled)12. (canceled)14. (canceled)15. Glass ceramic according to claim 1 , which comprises lithium silicate in the form of lithium disilicate and/or lithium metasilicate.16. (canceled)17. (canceled)18. (canceled)19. Glass ceramic according to claim 1 , which is present in the form of a blank or a dental restoration.20. Starting glass which comprises the components of the glass ceramic according to .21. Starting glass according to claim 20 , which is present in the form of a ground powder or a compact made of ground powder.22. Process for the preparation of the glass ceramic according to claim 1 , wherein{'claim-ref': {'@idref': 'CLM-00020', 'claim 20'}, '(a) the starting glass according to is ground,'}(b) the ground starting glass is optionally pressed to form a ...

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Номер записи: 37
14-01-2021 дата публикации

METHODS FOR FORMING GLASS CERAMIC ARTICLES

Номер: US20210009459A1
Автор: Chou I-Wen, Click Carol Ann, Cui Shuo, Edmonston James Haward, Hubert Mathieu Gerard Jacquues, Kroemer Katherine Weber
Принадлежит:

A method for forming glass ceramic articles includes heating a stack of glass sheets to a nucleation temperature to create a nucleated crystallizable stack of sheets; heating the nucleated crystallizable stack of glass sheets to a crystallization temperature; and maintaining the crystallization temperature for a predetermined period of time to produce the glass-ceramic articles. The stack of glass sheets has a mass index of less than or equal to 35. 1. A method for forming glass ceramic articles comprising:heating a stack of glass sheets to a nucleation temperature to create a nucleated crystallizable stack of sheets;heating the nucleated crystallizable stack of glass sheets to a crystallization temperature; andmaintaining the crystallization temperature for a predetermined period of time to produce the glass-ceramic articles,wherein the stack of glass sheets has a mass index of less than or equal to 35.2. The method for forming glass ceramic articles of claim 1 , wherein the stack of glass sheets has a mass index of less than or equal to 25.3. The method for forming glass ceramic articles of claim 1 , wherein the stack of glass sheets has a mass index of less than or equal to 15.4. The method for forming glass ceramic articles of claim 1 , wherein the stack of glass sheets has a mass index of less than or equal to 10.5. The method for forming glass ceramic articles of claim 1 , wherein the glass sheets have a thickness less than or equal to 1.11 mm and the number of glass sheets in the stack of glass sheets is less than 31.6. The method for forming glass ceramic articles of claim 1 , wherein the glass sheets have a thickness less than or equal to 1.11 mm and the number of glass sheets in the stack of glass sheets is less than 22.7. The method for forming glass ceramic articles of claim 1 , wherein the glass sheets have a thickness less than or equal to 1.11 mm and the number of glass sheets in the stack of glass sheets is less than 9.8. The method for forming glass ...

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Номер записи: 38
14-01-2021 дата публикации

Glass ceramic sintered body and wiring substrate

Номер: US20210009464A1
Автор: Shin Takane, Yasuharu Miyauchi, Yousuke Futamata
Принадлежит: TDK Corp

A glass ceramic sintered body having a small dielectric loss in a high frequency band of 10 GHz or higher and stable characteristics against temperature variation and a wiring substrate using the same are provided. The glass ceramic sintered body contains crystallized glass, an alumina filler, silica, and strontium titanate. The content of the crystallized glass is 50 mass % to 80 mass %, the content of the alumina filler is 15.6 mass % to 31.2 mass % in terms of Al2O3, the content of silica is 0.4 mass % to 4.8 mass % in terms of SiO2, and the content of the strontium titanate is 4 mass % to 14 mass % in terms of SrTiO3.

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Номер записи: 39
10-01-2019 дата публикации

QUARTZ GLASS COMPONENT OF HIGH THERMAL STABILITY, SEMIFINISHED PRODUCT THEREFOR, AND METHOD FOR PRODUCING THE SAME

Номер: US20190010073A1
Автор: Baier Thomas, SCHENK Christian, TSCHOLITSCH Nadine
Принадлежит: HERAEUS QUARZGLAS GMBH & CO. KG

In a known method for producing a quartz glass component, a crystal formation layer containing a crystallization promoter is produced on a coating surface of a base body of quartz glass. Starting therefrom, to provide a method for producing a quartz glass component of improved thermal strength and long-term stability which displays a comparatively small deformation particularly also in the case of rapid heating-up processes, it is suggested according to one aspect that a porous crystal formation layer containing amorphous SiOparticles is produced with a mean thickness in the range of 0.1 to 5 mm, and that a substance which contains cesium and/or rubidium is used as the crystallization promoter. 1. A method for producing a quartz glass component , with a crystal formation layer containing a crystallization promoter being produced on a coating surface of a base body of quartz glass , comprising:{'sub': '2', 'producing a porous crystal formation layer containing amorphous SiOparticles with a mean thickness in the range of 0.1 to 5 mm; and'}using a substance that contains cesium and/or rubidium as the crystallization promoter.2. The method of claim 1 , wherein the crystallization promoter substance has a melting temperature below 1150° C.3. The method of claim 1 , wherein the crystallization promoter substance has a melting temperature below 1100° C.4. The method of claim 1 , wherein the amount of the crystallization promoter substance in the porous crystal formation layer is at least 0.025 mole % and not more than 0.5 mole %.5. The method of claim 4 , wherein the porous crystal formation layer is produced with a mean thickness in the range of 0.5 to 3 mm.6. The method of claim 1 , wherein amorphous SiOparticles produced by comminuting quartz glass make up the greatest volume proportion of the crystal formation layer.7. The method of claim 1 , wherein the production of the crystal formation layer comprises:{'sub': '2', 'applying a dispersion which contains the amorphous ...

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Номер записи: 40
03-02-2022 дата публикации

LI2O-AL2O3-SIO2-BASED CRYSTALLIZED GLASS

Номер: US20220033298A1
Автор: Matano Takahiro, Takahashi Takahiro, TOJO Shin, Yokota Yuki
Принадлежит:

Provided is a LiO—AlO—SiO-based crystallized glass in which a yellowish tint due to TiO, FeOor so on is reduced. The LiO—AlO—SiO-based crystallized glass contains, in terms of % by mass, 40 to 90% SiO, 5 to 30% AlO, 1 to 10% LiO, 0 to 20% SnO, 1 to 20% ZrO, 0 to 10% MgO, 0 to 10% PO, and 0 to below 2% TiO. 1. A LiO—AlO—SiO-based crystallized glass containing , in terms of % by mass , 40 to 90% SiO , 5 to 30% AlO , 1 to 10% LiO , 0 to 20% SnO , 1 to 20% ZrO , 0 to 10% MgO , 0 to 10% PO , and 0 to below 2% TiO.2. The LiO—AlO—SiO-based crystallized glass according to claim 1 , further containing claim 1 , in terms of % by mass claim 1 , 0 to 10% NaO claim 1 , 0 to 10% KO claim 1 , 0 to 10% CaO claim 1 , 0 to 10% SrO claim 1 , 0 to 10% BaO claim 1 , 0 to 10% ZnO claim 1 , and 0 to 10% BO.3. The LiO—AlO—SiO-based crystallized glass according to claim 1 , further containing claim 1 , in terms of % by mass claim 1 , 0.1% or less FeO.4. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of SnO/(SnO+ZrO+PO+TiO+13203) is 0.06 or more.5. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of AlO/(SnO+ZrO) is 7.1 or less.6. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of SnO/(SnO+ZrO) is 0.01 to 0.99.7. The LiO—AlO—SiO-based crystallized glass according to claim 1 , containing claim 1 , in terms of % by mass claim 1 , 8% or less NaO+KO+CaO+SrO+BaO.8. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of (SiO+AlO)/LiO is 20 or more.9. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of (SiO+AlO)/SnOis 44 or more.10. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of (MgO+ZnO)/LiO is less than 0.395 or more than 0.754.11. The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of (LiO+NaO+KO)/ZrOis 2.0 or less.12. The LiO—AlO—SiO-based ...

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Номер записи: 41
17-01-2019 дата публикации

Feedstock Gel and Method of Making Glass-Ceramic Articles from the Feedstock Gel

Номер: US20190016622A1
Автор: Cooper Scott P.
Принадлежит:

A method of making a glass-ceramic article includes synthesizing a feedstock gel that includes a base oxide network comprising NaO, CaO, and SiO, in which a molar ratio of NaO:CaO:SiOin the gel is 1:2:3, and then converting the feedstock gel into a glass-ceramic article such as a container or a partially-formed container. The conversion of the feedstock gel into a glass-ceramic container may be performed at a temperature that does not exceed 900° C. and may include the steps of pressing the feedstock gel into a compressed solid green-body, sintering the green-body into a solid monolithic body of a glass-ceramic material, deforming the solid monolithic glass-ceramic body into a glass-ceramic preform, and cooling the preform. A glass-ceramic article having a glass-ceramic material that has a molar ratio of NaO:CaO:SiOthat is 1:2:3 is also disclosed. 1. A method of making a glass-ceramic article , the method comprising:{'sub': 2', '2', '2', '2, 'synthesizing a feedstock gel that includes a base oxide network comprising NaO, CaO, and SiOin which a molar ratio of NaO:CaO:SiOis 1:2:3;'}pressing the feedstock gel into a compressed solid green-body;sintering the compressed solid green-body of the feedstock gel at a temperature below 900° C. to produce a solid monolithic body of a glass-ceramic material having an amorphous residual glass phase and a crystalline phase distributed within the amorphous residual glass phase, the solid monolithic body of a glass-ceramic material having a density that is greater than a density of the feedstock gel;deforming the solid monolithic body of a glass-ceramic material into a glass-ceramic preform having a container shape at a temperature of 600° C. or above; andcooling the glass-ceramic preform into a glass-ceramic article in the form of a container or a partially-formed container.2. The method set forth in claim 1 , wherein the step of synthesizing the feedstock gel comprises:{'sub': 2', '2, 'providing an aqueous solution that includes ...

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Номер записи: 42
17-01-2019 дата публикации

GLASS

Номер: US20190016626A1
Автор: Hayashi Masahiro, SAITO Atsuki
Принадлежит: NIPPON ELECTRIC GLASS CO., LTD.

A glass of the present invention includes as a glass composition, in terms of mol %, 60% to 80% of SiO, 12% to 25% of AlO, 0% to 3% of BO, 0% to 3% of LiO+NaO+KO, 5% to 25% of MgO+CaO+SrO+BaO, and 0.1% to 10% of PO, and has a strain point of more than 730° C. 1. A glass , comprising as a glass composition , in terms of mol % , 60% to 80% of SiO , 12% to 25% of AlO , 0% to 3% of BO , 0% to 3% of LiO+NaO+KO , 5% to 25% of MgO+CaO+SrO+BaO , and 0.1% to 10% of PO , and having a strain point of more than 730° C.2. The glass according to claim 1 , wherein the glass has a content of BOof less than 1 mol %.3. The glass according to claim 1 , wherein the glass has a content of LiO+NaO+KO of 0.2 mol % or less.4. The glass according to claim 1 , wherein the glass has a molar ratio (MgO+CaO+SrO+BaO)/AlOof from 0.5 to 3.5. The glass according to claim 1 , wherein the glass has a strain point of 760° C. or more.6. The glass according to claim 1 , wherein the glass has a difference of (a temperature at a viscosity at high temperature of 10dPa·s-strain point) of 980° C. or less.7. The glass according to claim 1 , wherein the glass has a temperature at a viscosity at high temperature of 10dPa·s of 1 claim 1 ,750° C. or less.8. The glass according to claim 1 , wherein the glass has a flat sheet shape.9. The glass according to claim 1 , wherein the glass is used for a substrate for forming a semiconductor crystal. The present invention relates to a glass having high heat resistance, and for example, to a glass substrate for forming a semiconductor crystal for an LED at high temperature.It has been known that a semiconductor crystal to be used in an LED or the like is improved in semiconductor characteristics through its forming into a film at higher temperature.In such application, a sapphire substrate having high heat resistance is generally used. Also in other applications, the sapphire substrate is used when the semiconductor crystal is formed into a film at high temperature (e.g., ...

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Номер записи: 43
17-01-2019 дата публикации

SODA-LIME-SILICA GLASS-CERAMIC

Номер: US20190016629A1
Автор: Click Carol A, Cooper Scott P, Schuver Samuel
Принадлежит:

A soda-lime-silica glass-ceramic article having an amorphous matrix phase and a crystalline phase is disclosed along with a method of manufacturing a soda-lime-silica glass-ceramic article from a parent glass composition comprising 47-63 mol % SiO, 15-22 mol % NaO, and 18-36 mol % CaO. The crystalline phase of the glass-ceramic article has a higher concentration of sodium (Na) than that of the amorphous matrix phase. 1. A soda-lime-silica glass-ceramic container comprising:{'sub': 2', '2, 'a body defining the shape of a hollow container and comprising a soda-lime-silica glass-ceramic having an amorphous matrix phase and a crystalline phase, with the amorphous matrix phase and the crystalline phase each having a concentration of sodium, wherein the soda-lime-silica glass-ceramic has an overall chemical composition comprising 47-63 mol % SiO, 15-22 mol % NaO, and 18-36 mol % CaO, wherein the crystalline phase comprises combeite crystalline particles homogeneously dispersed throughout the amorphous matrix phase, and wherein the concentration of sodium in the crystalline phase is greater than the concentration of sodium in the amorphous matrix phase.'}2. The soda-lime-silica glass-ceramic container set forth in claim 1 , wherein the crystalline phase constitutes 10 vol % to 70 vol % of the soda-lime-silica glass-ceramic.3. The soda-lime-silica glass-ceramic container set forth in claim 1 , wherein the amorphous matrix phase comprises 9-13 at % sodium (Na) and the crystalline phase comprises 12-17 at % sodium (Na).4. (canceled)5. (canceled)6. The soda-lime-silica glass-ceramic container set forth in claim 4 , wherein the combeite crystalline particles have a mean particle size in the range of 0.1 μm to 50 μm.7. The soda-lime-silica glass-ceramic container set forth in claim 1 , wherein the crystalline phase does not include particles of devitrite (NaO.3CaO.6SiO) claim 1 , wollastonite (CaO.SiO) claim 1 , or a SiOpolymorph.8. The soda-lime-silica glass-ceramic container ...

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Номер записи: 44
16-01-2020 дата публикации

METHODS FOR CERAMMING GLASS WITH NUCLEATION AND GROWTH DENSITY AND VISCOSITY CHANGES

Номер: US20200017395A1
Автор: Click Carol Ann, Dutta lndrajit, Gulbiten Ozgur, Hall Jill Marie, Hubert Mathieu Gerard Jacques, JR. John Robert, Kittleson Andrew Peter, Rai Rohit, Saltzer, Trosa Matthew Daniel, Zheng Zheming
Принадлежит:

A method for ceramming a glass article to a glass-ceramic includes placing a glass article into a heating apparatus, and heating the glass article to a first hold temperature at a first predetermined heating rate. The glass article is held at the first hold temperature for a first predetermined duration. The viscosity of the glass article is maintained within log viscosity ±1.0 poise during the first predetermined duration. The glass article is then heated from the first hold temperature to a second hold temperature at a second predetermined heating rate. The glass article is held at the second hold temperature for a second duration. A density of the glass article is monitored from the heating of the glass article from the first hold temperature through the second duration, and the second duration is ended when an absolute value of a density rate of change of the glass article is less than or equal to 0.10 (g/cm)/min. 1. A method for ceramming a glass article to a glass-ceramic comprising:placing a glass article into a heating apparatus;heating the glass article to a first hold temperature at a first predetermined heating rate;holding the glass article at the first hold temperature for a first predetermined duration, wherein viscosity of the glass article is maintained within log of viscosity ±1.0 poise of a target viscosity during the first predetermined duration;heating the glass article from the first hold temperature to a second hold temperature at a second predetermined heating rate;holding the glass article at the second hold temperature for a second duration, wherein density of the glass article is monitored from the heating of the glass article from the first hold temperature through the second duration; and{'sup': '3', 'ending the second duration when an absolute value of a density rate of change of the glass article is less than or equal to 0.10 (g/cm)/min.'}2. The method of claim 1 , wherein ending the second duration occurs when the absolute value of the ...

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Номер записи: 45
16-01-2020 дата публикации

GLASS CERAMIC ARTICLES HAVING IMPROVED PROPERTIES AND METHODS FOR MAKING THE SAME

Номер: US20200017398A1
Автор: Click Carol Ann, Edmonston James Howard, Fu Qiang, Hall Jill Marie, Hubert Mathieu Gerard Jacques, Joshi Dhananjay, JR. John Robert, Kittleson Andrew Peter, Kroemer Katherine Weber, Moore Galan Gregory, Rai Rohit, Ridge John Richard, Saltzer, Smith Charlene Marie, Stapleton Erika Lynn, Trosa Matthew Daniel, Ukrainczyk Ljerka, Wilson Shelby Kerin, YANG Bin, Zheng Zheming
Принадлежит: CORNING INCORPORATED

A glass ceramic article including a lithium disilicate crystalline phase, a petalite crystalline phased, and a residual glass phase. The glass ceramic article has a warp (μm)<(3.65×10/μm×diagonal) where diagonal is a diagonal measurement of the glass ceramic article in μm, a stress of less than 30 nm of retardation per mm of glass ceramic article thickness, a haze (%)<0.0994t+0.12 where t is the thickness of the glass ceramic article in mm, and an optical transmission (%)>0.91×10of electromagnetic radiation wavelengths from 450 nm to 800 nm, where t is the thickness of the glass ceramic article in mm. 1. A glass ceramic article comprising:a lithium disilicate crystalline phase;a petalite crystalline phased; anda residual glass phase, whereinthe glass ceramic article comprises:{'sup': '−6', 'a warp (μm)<(3.65×10μm×diagonal) where diagonal is a diagonal measurement of the glass ceramic article in μm;'}a stress of less than 30 nm of retardation per mm of glass ceramic article thickness;a haze (%)<0.0994t+0.12 where t is the thickness of the glass ceramic article in mm; and{'sup': '(2-0.03t)', 'an optical transmission (%)>0.91×10of electromagnetic radiation wavelengths from 450 nm to 800 nm, where t is the thickness of the glass ceramic article in mm.'}2. The glass ceramic article of claim 1 , wherein the glass ceramic article has a fracture toughness in a range from 1.0 MPa√m to 2.0 MPa√m.3. The glass ceramic article of claim 1 , wherein the glass ceramic article has a hardness measured by a Vickers indenter at a 200 gram load of greater than 680 kgf.4. The glass ceramic article of claim 1 , wherein the glass ceramic article is strengthened and has compressive stress greater than 175 MPa.5. The glass ceramic article of claim 4 , wherein the glass ceramic article has a central tension greater than or equal to 80 MPa.6. The glass ceramic article of claim 4 , wherein the glass ceramic article has a depth of compression of 0*t to 0.3*t claim 4 , where t is thickness of the ...

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Номер записи: 46
16-01-2020 дата публикации

Glass-ceramic articles with increased resistance to fracture and methods for making the same

Номер: US20200017399A1
Автор: Alana Marie Whittier, Andrew Peter Kittleson, Carol Ann Click, Charlene Marie Smith, Dhananjay Joshi, Indrajit Dutta, James Clark Walck, JR., James Howard Edmonston, Jill Marie Hall, John Robert SALTZER, Jr., Mathieu Gerard Jacques HUBERT, Matthew Artus Tuggle, Matthew Daniel Trosa, Michael S. Fischer, Ozgur Gulbiten, Qiang Fu, Rohit Rai, Zheming ZHENG
Принадлежит: Corning Inc

A glass-ceramic article having one or more crystalline phases; a residual glass phase; a compressive stress layer extending from a first surface to a depth of compression (DOC); a maximum central tension greater than 70 MPa; a stored tensile energy greater than 22 J/m2; a fracture toughness greater than 1.0 MPa√m; and a haze less than 0.2.

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Номер записи: 47
24-01-2019 дата публикации

GLASS CERAMIC WORKTOP

Номер: US20190021485A1
Автор: DEBREYER Grégory, DEMOL Franck, Roux Nicolas, Vilato Pablo
Принадлежит: EUROKERA S.N.C.

An item of equipment includes at least one worktop formed of at least one substrate made of transparent monolithic glass material with a surface area of greater than 0.7 m. The substrate exhibits a light transmission Tof greater than 10% and an opacity indicator of between 5 and 90. The substrate is predominantly or completely bare or provided with coating(s) such that the substrate, thus coated, exhibits a haze of less than 15% and/or a light transmission Tof greater than 60% and/or an opacity indicator of less than 85. The item of equipment also includes at least one heating element and at least one interface for communication with at least one element of the worktop and/or with at least one external element for wireless communication. The item of equipment is devoid of light source(s). 1. An item of equipment , comprising:{'sup': '2', 'sub': L', 'L, 'at least one worktop formed of at least one substrate made of transparent monolithic glass material with a surface area of greater than 0.7 m, said substrate exhibiting a light transmission Tof greater than 10% and an opacity indicator of between 5 and 90, said substrate being predominantly or completely bare or provided with coating(s) such that the substrate, thus coated, exhibits a haze of less than 15% and/or a light transmission Tof greater than 60% and/or an opacity indicator of less than 85,'}at least one heating element,at least one interface for communication with at least one element of the worktop and/or with at least one external element for wireless communication,said item of equipment additionally being devoid of light source(s).2. The item of equipment as claimed in claim 1 , wherein the surface area of the substrate made of glass material is greater than 0.9 m claim 1 , the thickness of said substrate is at least 2 mm claim 1 , and the thickness of the substrate is less than 15 mm.3. The item of equipment as claimed in claim 1 , wherein the substrate made of glass material occupies at least 50% of the ...

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Номер записи: 48
25-01-2018 дата публикации

ION EXCHANGEABLE GLASS, GLASS CERAMICS AND METHODS FOR MAKING THE SAME

Номер: US20180022640A1
Автор: Dejneka Matthew John, Fu Qiang, Gross Timothy Michael, Guo Xiaoju, Likitvanichkul Sumalee, Mauro John Christopher
Принадлежит:

Glass-ceramics and precursor glasses that are crystallizable to glass-ceramics are disclosed. The glass-ceramics of one or more embodiments include rutile, anatase, armalcolite or a combination thereof as the predominant crystalline phase. Such glasses and glass-ceramicsmay include compositions of, in mole %: SiOin the range from about 45 to about 75; AlOin the range from about 4 to about 25; POin the range from about 0 to about 10; MgO in the range from about 0 to about 8; RO in the range from about 0 to about 33; ZnO in the range from about 0 to about 8; ZrOin the range from about 0 to about 4; BOin the range from about 0 to about 12, and one or more nucleating agents in the range from about 0.5 to about 12. In some glass-ceramic articles, the total crystalline phase includes up to 20% by weight of the glass-ceramic article. 1. A glass-ceramic article comprising: [{'sub': '2', 'SiOin the range from about 45 to about 75;'}, {'sub': 2', '3, 'AlOin the range from about 4 to about 25;'}, {'sub': 2', '5, 'POin the range from about 0 to about 10;'}, 'MgO in the range from about 0 to about 8;', {'sub': '2', 'RO in the range from about 0 to about 33;'}, 'ZnO in the range from about 0 to about 8;', {'sub': '2', 'ZrOin the range from about 0 to about 4;'}, {'sub': '2', 'TiOin the range from about 0.5 to about 12; and'}, {'sub': 2', '3, 'BOin the range from about 0 to about 12,'}, {'sub': 2', '2', '2', '2, 'wherein RO comprises one or more of NaO, LiO and KO.'}], 'a predominant crystalline phase comprising anatase, rutile, or a combination thereof; and a composition, in mol %, comprising2. The glass-ceramic article of claim 1 , wherein (RO—AlO) is in the range from about −4 to about 4.3. The glass-ceramic article of claim 1 , wherein the composition comprises claim 1 , in mol % claim 1 , LiO in the range from about 0 to about 12;{'sub': '2', 'NaO in the range from about 4 to about 20; and'}{'sub': '2', 'KO in the range from about 0 to about 2.'}4. The glass-ceramic article ...

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Номер записи: 49
10-02-2022 дата публикации

COPPER ALUMINOBOROSILICATE GLASS AND USES THEREOF

Номер: US20220041492A1
Автор: Comte Marie, Lehuede Philippe
Принадлежит: Eurokera

The present invention provides an aluminoborosilicate glass of composition, expressed as percentages by weight of oxides, containing: 60% to 70% of SiO, 13% to 20% of AlO, 1% to 9% of BO, 0 to 3% of PO, 0.5% to 4% of MgO, 1% to 4% of BaO, 0 to 3% of CaO, 0 to 3% of SrO, 2% to 10% of ZnO, 0 to 2% of LiO, 0 to 2% of NaO, 0 to 2% of KO, 0.1% to 3% of CuO, optionally up to 1% of at least one fining agent; and optionally up to 2% of at least one coloring agent other than CuO, with MgO+BaO+CaO+SrO<6%, 0.2% Подробнее

Номер записи: 50
23-01-2020 дата публикации

METHOD FOR PREPARING GLASS-CERAMICS, CAPABLE OF ADJUSTING MACHINABILITY OR TRANSLUCENCY THROUGH CHANGE IN TEMPERATURE OF HEAT TREATMENT

Номер: US20200024175A1
Автор: HONG Young Pyo, Jeon Hyun jun, Kim Joon Hyung, KIM Sung Min, KIM Yong su, Lim Hyung bong, Oh Kyung sik
Принадлежит:

Provided is a method for preparing a lithium disilicate glass-ceramics containing silicate as a main component, and more particularly, to a method for preparing a glass-ceramics, which is capable of adjusting machinability or translucency according to a crystalline size by using a first heat treatment or a second heat treatment. To this end, a method for preparing a glass-ceramics containing a silica crystalline phase includes: performing a first heat treatment on a glass composition at a temperature of 400 to 850° C., so that a lithium disilicate crystalline phase and a silica crystalline phase each having a size of 5 to 2,000 nm are formed through the first heat treatment. After the first heat treatment, the method further includes performing a second heat treatment at a temperature of 780 to 880° C., so that translucency is adjusted by a temperature of the second heat treatment. 1. A glass composition for dental materials comprising:{'sub': '2', '60 to 83 wt % SiO;'}{'sub': '2', '10 to 15 wt % LiO;'}{'sub': 2', '5, '2 to 6 wt % POworking as a nuclei formation agent;'}{'sub': 2', '3, '1 to 5 wt % AlOfor increasing a glass transition temperature and a softening point and enhancing chemical durability of glass;'}0.1 to 3 wt % SrO for increasing the softening point of the glass;0.1 to 2 wt % ZnO;1 to 5 wt % colorants; and{'sub': 2', '2, '2.5 to 6 wt % mixture of NaO and KO for increasing a thermal expansion coefficient of the glass,'}wherein the glass composition is subjected to a first heat treatment at a temperature of 480 to 800° C. to form a lithium disilicate crystalline phase and a silica crystalline phase each having a size of 30 to 500 nm.2. A method for preparing a glass-ceramics containing a silica crystalline phase , the method comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'performing a first heat treatment on the glass composition of at a temperature of 480 to 800° C., so that a lithium disilicate crystalline phase and a silica crystalline ...

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Номер записи: 51
23-01-2020 дата публикации

LITHIUM SILICATE MATERIALS

Номер: US20200024181A1
Автор: Bürke Harald, Höland Wolfram, Rheinberger Volker, Ritzberger Christian, Schweiger Marcel, Signer-Apel Elke
Принадлежит:

Lithium silicate materials are described which can be easily processed by machining to dental products without undue wear of the tools and which subsequently can be converted into lithium silicate products showing high strength. 1. A lithium silicate glass ceramic for dental restorations which comprises a main crystalline phase comprising lithium metasilicate , wherein the lithium metasilicate crystals comprise lamellar or platelet crystals.2. The lithium silicate glass ceramic of claim 1 , wherein the lithium metasilicate forms more than 50 and up to 80 vol. % of the lithium silicate glass ceramic.3. The lithium silicate glass ceramic of claim 1 , wherein the glass ceramic is in form of a blank or a dental restoration.4. The lithium silicate glass ceramic of claim 3 , wherein the blank is shaped into a dental restoration by machining or pressing.5. The lithium silicate glass ceramic of claim 4 , wherein machining comprises grinding claim 4 , trimming or milling.6. The lithium silicate glass ceramic of claim 4 , wherein the dental restoration is an inlay claim 4 , an onlay claim 4 , a bridge claim 4 , an abutment claim 4 , a facing claim 4 , a veneer claim 4 , a facet claim 4 , a crown claim 4 , a partial crown claim 4 , a framework or a coping.7. The lithium silicate glass ceramic of claim 1 , comprising SiO claim 1 , LiO and a nucleating agent.8. A lithium silicate glass ceramic material formed by:{'sub': 2', '2', '2', '2', '3, 'a) heating a starting glass material which is essentially free of ZnO and comprises SiO, LiO, KO, AlO, nucleating agent, and optionally Me(II)O, wherein Me is CaO, BaO, MgO, SrO or combinations thereon, at a first temperature such that nuclei suitable to form lithium metasilicate crystals are formed; and'}b) heating the material from a) at a second temperature which is higher than the first temperature to produce lithium silicate glass ceramic which has lithium metasilicate as the main crystalline phase, and wherein the crystals are of ...

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Номер записи: 52
28-01-2021 дата публикации

ION EXCHANGED GLASS WITH HIGH RESISTANCE TO SHARP CONTACT FAILURE AND ARTICLES MADE THEREFROM

Номер: US20210024404A1
Автор: Gross Timothy Michael
Принадлежит:

An article comprising an ion-exchanged glass material that prevents sharp contact flaws from entering a central region of the material that is under central tension and thus causing failure of the material. The glass material may be a glass or glass ceramic having a surface layer under compression. In some embodiments, the depth of the compressive layer is greater than about 75 um. The greater depth of layer prevents flaws from penetrating the compressive layer to the region under tension. 131.-. (canceled)32. An article comprising a glass material , the glass material having a thickness of less than 1.5 mm , a compressive layer extending from a surface of the glass material to a depth of layer of at least 75 microns , wherein the compressive layer is under a compressive stress of at least 250 MPa , and wherein the glass material is a glass ceramic comprising a silicate glassy phase and a ceramic phase.33. The article of claim 32 , wherein the glass material comprises an inner central region under a tension of up to 75 MPa.34. The article of claim 33 , wherein the glass material has a Vickers crack initiation threshold of at least 5 kgf.35. The article of claim 34 , wherein the glass material has a Vickers crack initiation threshold of at least 10 kgf.36. The article of claim 35 , wherein the Vickers crack initiation threshold is at least 20 kgf.37. The article of claim 33 , wherein the compressive stress is at least 900 MPa.38. The article of claim 33 , wherein [(Al(mol %)+BO(mol %))/(Σ alkali metal modifiers (mol %))]>1.39. The article of claim 32 , wherein the glass material has a Vickers crack initiation threshold of at least 5 kgf.40. The article of claim 39 , wherein the glass material has a Vickers crack initiation threshold of at least 10 kgf.41. The article of claim 40 , wherein the Vickers crack initiation threshold is at least 20 kgf.42. The article of claim 41 , wherein the compressive stress is at least 900 MPa.43. The article of claim 39 , wherein [( ...

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Номер записи: 53
28-01-2021 дата публикации

Microcrystalline Glass, Microcrystalline Glass Product, and Manufacturing Method Therefor

Номер: US20210024405A1
Автор: Liu Zhenyu, YU Tianlai, YUAN Baoping
Принадлежит:

The present invention discloses a microcrystalline glass, a microcrystalline glass product, and a manufacturing method therefor. The main crystal phase of the microcrystalline glass comprises lithium silicate and a quartz crystal phase. The haze of the microcrystalline glass of the thickness of 0.55 mm is below 0.6%. The microcrystalline glass comprises the following components in percentage by weight: SiO: 65-85%; AlO: 1-15%; LiO: 5-15%; ZrO: 0.1-10%; PO: 0.1-10%; KO: 0-10%; MgO: 0-10%; ZnO: 0-10%. A four-point bending strength of the microcrystalline glass product is more than 600 Mpa. 1. A microcrystalline glass product , wherein the main crystal phase thereof comprises lithium silicate and a quartz crystal phase , a four-point bending strength of the microcrystalline glass product is above 600 MPa , and the microcrystalline glass product comprises the following components in percentage by weight: SiO: 65-85%; AlO: 1-15%; LiO: 5-15%; ZrO: 0.1-10%; PO: 0.1-10%; KO: 0-10%; MgO: 0-10%; ZnO: 0-10%; NaO: 0-5%.2. The microcrystalline glass product according to claim 1 , further comprising the following components in percentage by weight: SrO: 0-5%; and/or BaO: 0-5%; and/or TiO: 0-5%; and/or YO: 0-5%; and/or BO: 0-3%; and/or clarifiant: 0-2%.3. The microcrystalline glass product according to claim 1 , wherein the content of each component satisfies one or more of the following 6 conditions: 1) (SiO+LiO)/AlOis 6-15; 2) (AlO+LiO)/POis 5-20; 3) (SiO+LiO)/POis 40-80; 4) (Si+AlO+LiO+ZrO)/POis 40-90; 5) (KO+MgO)/ZrOis 0.6-1.2; 6) LiO/(KO+ZrO) is 2.3-4.0.4. The microcrystalline glass product according to claim 1 , comprising the following components in percentage by weight: SiO: 70-80%; and/or AlO: 4-12%; and/or LiO: 7-15%; and/or ZrO: 0.5-6%; and/or PO: 0.5-5%; and/or KO: 0-5% claim 1 , and/or MgO: 0-5%; and/or ZnO: 0-5%; and/or SrO: 0-1%; and/or BaO: 0-1%; and/or TiO: 0-1%; and/or YO: 0-1%; and/or NaO: 0-3%; and/or BO: 0.1-2%; and/or clarifiant: 0-1%.5. The microcrystalline ...

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Номер записи: 54
28-01-2021 дата публикации

LOCALLY STRENGTHENED GLASS-CERAMICS AND METHODS OF MAKING THE SAME

Номер: US20210024406A1
Автор: Christiansen Kirk Wegner, Fu Qiang, Gorelchenko Petr, Palumbo Aniello Mario, Pambianchi Michael S, VanDuyne Erick Franklin
Принадлежит:

Locally cerammed optically transparent glass-ceramic articles for consumer products. The locally cerammed glass-ceramic articles may have one or more primary glass-ceramic regions including primary crystal phases of a glass-ceramic material and one or more secondary glass-ceramic regions including secondary crystal phases of the glass-ceramic material. The primary glass-ceramic region(s) may be optically transparent and the secondary glass-ceramic region(s) may be non-optically transparent. The primary glass-ceramic region(s) may have a fracture toughness less than the fracture toughness of the secondary glass-ceramic region(s). 1. A glass-ceramic article comprising: a primary glass-ceramic region comprising primary crystal phases of the glass-ceramic material and a fracture toughness of X MPa*m{circumflex over (\u2003)}½, wherein the primary crystal phases of the glass-ceramic material are optically transparent, and', 'a secondary glass-ceramic region comprising secondary crystal phases of the glass-ceramic material and a fracture toughness of Y MPa*m{circumflex over (\u2003)}½, wherein the secondary crystal phases of the glass-ceramic material are not optically transparent, and wherein Y is greater than X., 'a body formed of a glass-ceramic material, the body comprising2. The glass-ceramic article of claim 1 , wherein the primary crystal phases comprise petalite and lithium disilicate.3. The glass-ceramic article of claim 1 , wherein the secondary crystal phases comprise beta-spodumene claim 1 , lithium disilicate claim 1 , and zirconia.4. The glass-ceramic article of claim 1 , wherein X is 0.9 MPa*m{circumflex over ( )}½ or more.5. The glass-ceramic article of claim 1 , wherein Y is 2 MPa*m{circumflex over ( )}½ or more.6. The glass-ceramic article of claim 1 , wherein Y is at least two times more than X.7. The glass-ceramic article of claim 1 , wherein the primary crystal phases of the glass-ceramic material comprise a first average grain size and wherein the ...

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Номер записи: 55
28-01-2021 дата публикации

BORON PHOSPHATE GLASS-CERAMICS WITH LOW DIELECTRIC LOSS

Номер: US20210024407A1
Автор: Beall George Halsey, Boek Heather Debra, CAI LING, Kim Jin Su, Thelen Dean Michael, Weller Mark Owen
Принадлежит:

A glass-ceramic that includes: SiOfrom about 35 mol % to about 80 mol %; BOfrom about 10 mol % to about 50 mol %; POfrom about 10 mol % to about 50 mol %; and an optional addition of one or more of CaO, MgO and BiOfrom 0 mol % to about 5 mol %, wherein the glass-ceramic further comprises a boron-phosphate crystalline phase. 1. A glass-ceramic , comprising:{'sub': '2', 'SiOfrom about 35 mol % to about 80 mol %;'}{'sub': 2', '3, 'BOfrom about 10 mol % to about 50 mol %;'}{'sub': 2', '5, 'POfrom about 10 mol % to about 50 mol %; and'}{'sub': 2', '3, 'an optional addition of one or more of CaO, MgO and BiOfrom 0 mol % to about 5 mol %,'}wherein the glass-ceramic further comprises a boron-phosphate crystalline phase.2. The glass-ceramic according to claim 1 , wherein the glass-ceramic comprises an average coefficient of thermal expansion (CTE) of about 40×10/° C. to about 65×10/° C. claim 1 , as measured from 25° C. to 300° C.3. The glass-ceramic according to claim 1 , further comprising:{'sub': 2', '3, 'AlOfrom about 0.005 mol % to about 1 mol %.'}4. The glass-ceramic according to claim 1 , further comprising:{'sub': '2', 'SnOfrom about 0.005 mol % to about 0.5 mol %.'}5. The glass-ceramic according to claim 1 , further comprising:{'sub': '2', 'SiOfrom about 55 mol % to about 75 mol %;'}{'sub': 2', '3, 'BOfrom about 10 mol % to about 30 mol %; and'}{'sub': 2', '5, 'POfrom about 10 mol % to about 35 mol %.'}6. The glass-ceramic according to claim 1 , the boron-phosphate crystalline phase being derived from ceramming of the glass-ceramic between about 750° C. and about 1150° C. for about 1 to about 10 hours.7. The glass-ceramic according to claim 1 , wherein the ratio of BOto POranges from 1:2 to 2:1.8. A glass-ceramic claim 1 , comprising:{'sub': '2', 'SiOfrom about 35 mol % to about 80 mol %;'}{'sub': 2', '3, 'BOfrom about 10 mol % to about 50 mol %;'}{'sub': 2', '5, 'POfrom about 10 mol % to about 50 mol %; and'}{'sub': 2', '3, 'an optional addition of one or more of ...

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Номер записи: 56
25-01-2018 дата публикации

CERAMIC SUBSTRATE

Номер: US20180027653A1
Автор: Ito Masanori, Katoh Tatsuya, KUTSUNA Masaki
Принадлежит:

A ceramic substrate includes a ceramic layer mainly formed of a glass ceramic and a conductor trace mainly formed of silver (Ag). In an adjacent region located adjacent to the conductor trace, the concentration of boron atoms (B) contained in the ceramic layer increases toward the conductor trace. 1. A ceramic substrate comprising a ceramic layer mainly formed of a glass ceramic and a conductor trace mainly formed of silver (Ag) , wherein in an adjacent region located adjacent to the conductor trace , the concentration of boron atoms (B) contained in the ceramic layer increases toward the conductor trace.2. The ceramic substrate according to claim 1 , wherein the adjacent region includes a region in which the concentration of boron atoms (B) is at least three times that in a central region of the ceramic layer centrally located in a thickness direction.3. The ceramic substrate according to claim 1 , wherein the conductor trace contains at least either of lanthanum atoms (La) and titanium atoms (Ti).4. The ceramic substrate according to claim 1 , wherein the ceramic layer contains borosilicate glass and alumina (AlO). The present invention relates to a ceramic substrate.There has been known a ceramic substrate having a ceramic layer mainly formed of a glass ceramic and a conductor trace containing silver (Ag) as a main component. Such a ceramic substrate is formed by applying a conductor paste which is the pre-firing form of the conductor trace to a green sheet which is the pre-firing form of the ceramic layer and then firing the green sheet carrying the conductor paste applied thereto. Such a ceramic substrate is also called a low temperature co-fired ceramic (LTCC) substrate.When the ceramic substrate is formed by firing, a silver component of the conductor paste diffuses into the ceramic layer. This may cause, for example, formation of voids in the ceramic layer, deformation of the ceramic layer, and change of the color of the ceramic layer. It is considered that ...

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Номер записи: 57
24-04-2014 дата публикации

GLASS FOR CHEMICAL STRENGTHENING

Номер: US20140113141A1
Автор: KUNO Kazuhide, Yamamoto Hiroyuki
Принадлежит: Asahi Glass Company, Limited

There is provided a glass for chemical strengthening having a gray-based color tone and excelling in characteristics preferred for the purposes of housing or decoration of an electronic device, that is, bubble quality, strength, and light transmittance characteristics. A glass for chemical strengthening contains, in mole percentage based on following oxides, 55% to 80% of SiO, 3% to 16% of AlO, 0% to 12% of BO, 5% to 16% of NaO, 0% to 4% of KO, 0% to 15% of MgO, 0% to 3% of CaO, 0% to 18% of ΣRO (where R represents Mg, Ca, Sr, Ba or Zn), 0% to 1% of ZrO, 0.01% to 0.2% of CoO, 0.05% to 1% of NiO, and 0.01% to 3% of FeO. 1. A glass for chemical strengthening comprising , in mole percentage based on following oxides , 55% to 80% of SiO , 3% to 16% of AlO , 0% to 12% of BO , 5% to 16% of NaO , 0% to 4% of KO , 0% to 15% of MgO , 0% to 3% of CaO , 0% to 18% of ΣRO (where R represents Mg , Ca , Sr , Ba or Zn) , 0% to 1% of ZrO , 0.01% to 0.2% of CoO , 0.05% to 1% of NiO , and 0.01% to 3% of FeO.2. The glass for chemical strengthening according to claim 1 , comprising 0.005% to 3% of a color correcting component having at least one metal oxide selected from the group consisting of oxides of Ti claim 1 , Cu claim 1 , Ce claim 1 , Er claim 1 , Nd claim 1 , Mn and Se.3. The glass for chemical strengthening according to claim 1 , comprising 0.1% to 1% of TiO.4. The glass for chemical strengthening according to claim 1 , comprising 0.1% to 3% of CuO.5. The glass for chemical strengthening according to claim 2 , comprising 0.005% to 2% of a color correcting component having at least one metal oxide selected from the group consisting of oxides of Ce claim 2 , Er claim 2 , Nd claim 2 , Mn and Se.6. The glass for chemical strengthening according to claim 1 ,{'sub': 3', '4', '2', '3, 'wherein a content ratio CoO/FeOis 0.01 to 0.5.'}7. The glass for chemical strengthening according to claim 1 ,{'sub': 2', '2', '3', '2', '3', '2', '2', '3', '3', '4, 'wherein a content ratio (SiO+AlO+ ...

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Номер записи: 58
17-02-2022 дата публикации

GLASS-CERAMIC AND SUBSTRATE THEREOF

Номер: US20220048810A1
Автор: NIE Xiaobing, YU Tianlai, YUAN Baoping
Принадлежит:

A glass ceramic contains the following components by wt %: 60 to 80% of SiO; 4 to 20% of AlO; 0 to 15% of LiO; more than 0 but less than or equal to 12% of NaO; 0 to 5% of KO; more than 0 but less than or equal to 5% of ZrO; 0 to 5% of PO; and 0 to 10% of TiO. A crystalline phase contains at least one of RSiO, RSiO, RTiO, RTiO, RPO, RAlSiO, RAlSiOO, RAlSiO, RAlSiO, quartz and quartz solid solution. With a liquidus temperature below 1,450° C., a thermal conductivity above 2 w/m·k, and a Vickers hardness above 600 kgf/mm2, the glass ceramic is applicable to portable electronic devices and optical devices. 1. A glass ceramic , containing the following components by wt %: 60 to 80% of SiO; 4 to 20% of AlO; 0 to 15% of LiO; more than 0 but less than or equal to 12% of NaO; 0 to 5% of KO; more than 0 but less than or equal to 5% of ZrO; 0 to 5% of PO; and 0 to 10% of TiO , wherein a crystalline phase contains at least one selected from RSiO , RSiO , RTiO , RTiO , RPO , RAlSiO , RAlSiOO , RAlSiO , RAlSiO , quartz and quartz solid solution , and R is at least one selected from Li , Na and K.2. The glass ceramic according to claim 1 , further containing 0 to 5% of BO; and/or 0 to 2% of MgO; and/or 0 to 2% of ZnO; and/or 0 to 5% of CaO; and/or 0 to 5% of BaO; and/or 0 to 3% of FeO; and/or 0 to 2% of SnO; and/or 0 to 5% of SrO; and/or 0 to 10% of LaO; and/or 0 to 10% of YO; and/or 0 to 10% of NbO; and/or 0 to 10% of TaO; and/or 0 to 5% of WO.3. A glass ceramic claim 1 , containing the following components by wt %: 60 to 80% of SiO; 4 to 20% of AlO; 0 to 15% of LiO; more than 0 but less than or equal to 12% of NaO; more than 0 but less than or equal to 5% of ZrO; 0 to 5% of PO; 0 to 10% of TiO; 0 to 5% of BO; 0 to 5% of KO; 0 to 2% of MgO; 0 to 2% of ZnO; 0 to 5% of CaO; 0 to 5% of BaO; 0 to 3% of FeO; 0 to 2% of SnO; 0 to 5% of SrO; 0 to 10% of LaO; 0 to 10% of YO; 0 to 10% of NbO; 0 to 10% of TaO; 0 to 5% of WO; and 0 to 5% of a clarificant claim 1 , wherein a crystalline ...

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Номер записи: 59
17-02-2022 дата публикации

COATED GLASSES WITH HIGH EFFECTIVE FRACTURE TOUGHNESS

Номер: US20220048812A1
Автор: Gu Yunfeng, LUO Jian, Niu Weijun, Zhang Rui
Принадлежит:

Glass-based articles comprise high effective fracture toughness. Glass-based articles comprise: a glass-based substrate comprising opposing first and second surfaces defining a substrate thickness (t), a substantially planar central portion, and a perimeter portion; a polymer coating disposed on at least a portion of at least one of the first or the second surfaces; and an effective fracture toughness that is greater than or equal to 1.25 MPa.mas measured at room temperature. 1. A glass-based article comprising:{'sub': 's', 'a glass-based substrate comprising opposing first and second surfaces defining a substrate thickness (t), a substantially planar central portion, and a perimeter portion;'}a polymer coating disposed on at least a portion of at least one of the first or the second surfaces; and{'sup': '0.5', 'an effective fracture toughness that is greater than or equal to 1.25 MPa.mas measured at room temperature.'}2. The glass-based article of claim 1 , wherein the perimeter portion comprises finished edges.3. The glass-based article of claim 1 , wherein an average thickness of the polymer coating (t) is greater than or equal to 5 micrometers and/or is less than or equal to 150 micrometers claim 1 , and wherein tis greater than or equal to 0.02 mm and less than or equal to 1.3 mm.4. The glass-based article of claim 1 , wherein the polymer coating comprises a polymer comprising a first material index (MI) as defined by MI=θσ claim 1 , wherein θ is elongation of the polymer in percentage and σis tensile strength of the polymer in MPa claim 1 , where MIis greater than or equal to 35 MPa and/or less than or equal to 100 MPa.5. The glass-based article of claim 4 , wherein the polymer coating comprises a polymer comprising a second material index (MI) as defined by MI=θσ claim 4 , wherein θ is elongation of the polymer in percentage and σis tensile strength of the polymer in MPa claim 4 , where MIis greater than or equal to 12 MPa and/or less than or equal to 75 MPa. ...

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Номер записи: 60
08-02-2018 дата публикации

Cordierite Glass-Ceramic

Номер: US20180037493A1
Автор: Bernd Ruedinger, Bianca Schreder, Martun Hovhannisyan, Meike Schneider, Oliver Hochrein
Принадлежит: SCHOTT AG

The present invention relates to an improved cordierite glass-ceramic. In order to improve the materials properties, it is proposed that the glass-ceramic comprising SiO 2 , Al 2 O 3 , MgO and Li 2 O contains cordierite as main crystal phase and that a secondary crystal phase of the glass-ceramic comprises high-quartz solid solution and/or keatite solid solution. The invention further relates to a process for producing such a glass-ceramic and the use of such a glass-ceramic.

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Номер записи: 61
12-02-2015 дата публикации

FUSION FORMED AND ION EXCHANGED GLASS-CERAMICS

Номер: US20150044474A1
Автор: Beall George Halsey, Borrelli Nicholas Francis, Smith Charlene Marie, Tietje Steven Alvin
Принадлежит:

The present disclosure relates to fusion formable highly crystalline glass-ceramic articles whose composition lies within the SiO—RO—LiO/NaO—TiOsystem and which contain a silicate crystalline phase comprised of lithium aluminosilicate (β-spodumene and/or β-quartz solid solution) lithium metasilicate and/or lithium disilicate. Additionally, these silicate-crystal containing glass-ceramics can exhibit varying NaO to LiO molar ratio extending from the surface to the bulk of the glass article, particularly a decreasing LiO concentration and an increasing NaO concentration from surface to bulk. According to a second embodiment, disclosed herein is a method for forming a silicate crystalline phase-containing glass ceramic. 1. A translucent or opaque glass-ceramic comprising: a silicate crystalline phase , and a composition , in weight percent on an oxide basis , 40-80% SiO , 2-30% AlO , 2-10% LiO , 0-8% TiO , 0-3% ZrO , and from greater than 0% up to about 3% NaO ,{'sub': 2', '2', '3', '2', '3', '2', '2', '2', '3', '2', '3, 'wherein a molar ratio of any one or more of NaO/AlO+BOand LiO+NaO/AlO+BOis greater than about 0.8,'}{'sub': 2', '2, 'wherein the glass-ceramic is made from a glass that exhibits a liquidus viscosity of greater than about 75,000 poise, and wherein a molar ratio of NaO to LiO increases from a surface to a bulk of the glass-ceramic.'}2. The glass-ceramic of claim 1 , wherein the composition comprises any one or more of: 0-2% SnO claim 1 , 0-7% BO claim 1 , 0-4% MgO claim 1 , 0-12% ZnO claim 1 , 0-8% BaO claim 1 , 0-3% CaO claim 1 , 0-6% SrO claim 1 , 0-4% KO claim 1 , 0-1.0% SbO claim 1 , 0-0.25% Ag claim 1 , 0-0.25% CeO claim 1 , and 0-0.01% Au.3. The glass-ceramic of claim 1 , wherein the composition is within the SiO—RO—LiO/NaO—TiOsystem claim 1 , and wherein Rcomprises any one of B and A1.4. The glass-ceramic of claim 1 , wherein the glass-ceramic article is formed via down drawn glass process.5. The glass-ceramic of claim 1 , wherein the source of ...

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Номер записи: 62
07-02-2019 дата публикации

METHOD FOR THE PREPARATION OF LITHIUM SILICATE GLASSES AND LITHIUM SILICATE GLASS CERAMICS

Номер: US20190039944A1
Автор: Bürke Harald, Höland Wolfram, Krolikowski Sebastian, Rampf Markus, Ritzberger Christian, Schweiger Marcel
Принадлежит:

The invention relates to a method for the preparation of a lithium silicate glass or a lithium silicate glass ceramic which comprise cerium ions and are suitable in particular for the preparation of dental restorations, the fluorescence properties of which largely correspond to those of natural teeth. 1. Method for the preparation of a lithium silicate glass , a lithium silicate glass with nuclei which are suitable for forming lithium metasilicate and/or lithium disilicate crystals , or a lithium silicate glass ceramic , which comprises a step in which a melt of a starting glass which comprises cerium ions is reacted with at least one reducing gas.2. Method according to claim 1 , wherein the gas comprises hydrogen or comprises hydrogen and nitrogen.3. Method according to claim 1 , in which the starting glass comprises up to 5.0 wt.-% alkaline earth metal oxide.4. Method according to claim 3 , wherein the alkaline earth metal oxide is CaO claim 3 , BaO claim 3 , MaO claim 3 , SrOor a mixture thereof.7. Method according to claim 1 , in which the starting glass furthermore comprises terbium ions.8. Method according to for the preparation of a lithium silicate glass with nuclei which are suitable for forming lithium metasilicate and/or lithium disilicate crystals.9. Method according to for the preparation of a lithium silicate glass ceramic which comprises lithium metasilicate as main crystal phase and/or comprises more than 10 vol.-% lithium metasilicate crystals.10. Method according to claim 9 , wherein the lithium metasilicate glass ceramic comprises more than 20 vol.-% lithium metasilicate crystals.11. Method according to for the preparation of a lithium silicate glass ceramic which comprises lithium disilicate as main crystal phase and/or comprises more than 10 vol.-% lithium disilicate crystals.12. Method according to claim 11 , wherein the lithium silicate glass ceramic comprises more than 20 vol.-% lithium disilicate crystals.13. Method according to claim 1 , in ...

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Номер записи: 63
18-02-2021 дата публикации

CRACK-RESISTANT GLASS-CERAMIC ARTICLES AND METHODS FOR MAKING THE SAME

Номер: US20210047234A1
Автор: Beunet Lionel Joel Mary, Comte Marie Jacqueline Monique, Fredholm Allan Mark, Fu Qiang, Paris Anne, Peschiera Sophie, Smith Charlene Marie
Принадлежит:

Glass-ceramics exhibiting a Vickers indentation crack initiation threshold of at least 15 kgf are disclosed. These glass-ceramics may be ion exchangeable or ion exchanged. The glass-ceramics include a crystalline and amorphous phases generated by subjecting a thin precursor glass article to ceramming cycle having an average cooling rate in the range from about 10° C./minute to about 25° C./minute. In one or more embodiments, the crystalline phase may comprise at least 20 wt % of the glass-ceramics. The glass-ceramics may include β-spodumene ss as the predominant crystalline phase and may exhibit an opacity ≥about 85% over the wavelength range of 400-700 nm for an about 0.8 mm thickness and colors an observer angle of 10° and a CIE illuminant F02 determined with specular reflectance included of a* between −3 and +3, b* between −6 and +6, and L* between 88 and 97. 120-. (canceled)21. A glass-ceramic article comprising: [{'sub': '2', 'SiOin the range from 62 to 75;'}, {'sub': 2', '3, 'AlOin the range from 10.5 to 17;'}, {'sub': '2', 'LiO in the range from 5 to 13;'}, 'ZnO in the range from 0 to 4;', 'MgO in the range from 0 to 8;', {'sub': 2', '3, 'BOin the range from 0 to 4;'}, {'sub': '2', 'NaO in the range from 0 to 5;'}, {'sub': '2', 'KO in the range from 0 to 4;'}, {'sub': '2', 'ZrOin the range from 0 to 2;'}, {'sub': 2', '5, 'POin the range from 0 to 7;'}, {'sub': 2', '3, 'FeOin the range from 0 to 0.3;'}, {'sub': 'x', 'MnOin the range from 0 to 2;'}, {'sub': 2', '2', '2', '2', '3', '2', '3, 'claim-text': 'in the range from 0.7 to 1.5;', 'a ratio [LiO+NaO+KO+MgO+ZnO]/[AlO+BO]'}], 'a composition, in mole %, comprisinga crystalline phase, wherein the crystalline phase comprises β-spodumene; anda Vickers crack initiation threshold of at least 12 kgf.22. The glass-ceramic article of claim 21 , further comprising SnO.23. The glass-ceramic article of claim 21 , further comprising a compressive stress of at least 300 MPa.24. The glass-ceramic article of claim 23 , ...

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Номер записи: 64
18-02-2016 дата публикации

NANOSTRUCTURED GLASSES AND VITROCERAMICS THAT ARE TRANSPARENT IN VISIBLE AND INFRA-RED RANGES

Номер: US20160046520A1
Автор: ALLIX Mathieu, Cardinal Thierry, CHENU Sébastien, MATZEN Guy, VERON Emmanuel
Принадлежит: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)

The present invention relates to novel vitroceramic or lens compositions that are nanostructured and transparent or translucent, including at least 97%, such as 97% to 100%, preferably 99% to 100%, by weight, relative to the total weight of the material, of a composition having the following formula I: (GeO)(SiO)(BO)(GaO)(Oxy)(Oxy)(I) where Oxyis an oxide selected from ZnO, MgO, NbO, WO, NiO, SnO, TiO, BiO, AgO, CaO, MnO, or a mixture thereof, selected preferably from ZnO, MgO, NbO, WO, NiO, SnO, AgO, CaO, MnO, or a mixture thereof, selected more preferably from ZnO, MgO, AgO, BiO, NbO, Or a mixture thereof, selected most preferably from ZnO, MgO, AgO, NbO, or a mixture thereof, and Oxyis an oxide selected from NaO, KO or a mixture thereof, Oxyis preferably NaO, and x, y, z, a, b and k are as defined in claim , to the manufacturing method thereof and to the uses thereof in the field of optics. 160-. (canceled)61. A nanostructured vitroceramic , either transparent or translucent , with essentially zero LiO content , containing 97% to 100% by weight in relation to the overall weight of the material , of a composition of the following formula I:{'br': None, 'sub': 2', 'x', '2', 'y', '2', '3', 'z', '2', '3', 'a', '1', 'b', '2', 'k, '(GeO)(SiO)(BO)(GaO)(Oxy)(Oxy)\u2003\u2003(I)'}where{'sub': 1', '2.5', '3', '2', '1.5, 'Oxyis an oxide selected from among ZnO, MgO, NbO, WO, NiO, SnO, TiO, BiO, AgO, CaO, MnO, or a mixture thereof, and'}{'sub': 2', '2', '2, 'Oxyis an oxide selected from NaO, KO, or a mixture thereof, and'}x is within the range between 0 and 98, andy is within the range between 0 and 60, andx and y are not simultaneously zero, andz is within the range between 0 and 20,x, y, z are such that x+y+z lie within the range between 40 and 98,a is within the range between 0.1 and 50,b is within the range between 0 and 35, andk is within the range between 0 and 7, andx, y, z, a, b and k are such that x+y+z+a+b+k=100.62. Nanostructured glass , either transparent or ...

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Номер записи: 65
03-03-2022 дата публикации

APPARATUS FOR HOLDING GLASSWARE DURING PROCESSING

Номер: US20220064050A1
Автор: Hoff Kyle Christopher, Mack Mark Edwin Lee, Morse Matthew Carl
Принадлежит:

An apparatus for holding glassware during processing includes a plurality of ware keepers, each ware keeper configured to receive a piece of glassware during the processing. Each ware keeper comprises a glass contact surface comprising a silicate material having a Knoop hardness less than or equal to 400 HKand a specific gravity greater than or equal to 1.5 and less than or equal to 6.

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Номер записи: 66
03-03-2022 дата публикации

CRYSTALLIZED GLASS OF THREE-DIMENSIONAL SHAPE, CHEMICALLY STRENGTHENED GLASS OF THREE-DIMENSIONAL SHAPE, AND METHOD FOR PRODUCING CRYSTALLIZED GLASS OF THREE-DIMENSIONAL SHAPE AND CHEMICALLY STRENGTHENED GLASS OF THREE-DIMENSIONAL SHAPE

Номер: US20220064054A1
Автор: IMAKITA Kenji, Koike Akio, Li Qing, Maeda Eriko
Принадлежит: AGC Inc.

The present invention provides crystallized glass of three-dimensional shape for easily producing chemically strengthened glass of three-dimensional shape that resists damage and has exceptional transparency. This crystallized glass of three-dimensional shape: 1. A crystallized glass for a cover glass for a mobile device , comprising a petalite crystal and a lithium disilicate crystal ,having an average transmittance of a light at a wavelength of 380 nm to 780 nm of 80% or more in terms of a thickness of 0.8 mm, andhaving a Young's modulus of 90 GPa or more.2. The crystallized glass according to claim 1 , wherein the Young's modulus is 100 GPa or more.3. The crystallized glass according to claim 1 , wherein the average transmittance is 85% or more.4. The crystallized glass according to claim 1 , having a fracture toughness value of 0.8 MPa·mor more.5. The crystallized glass according to claim 1 , having a haze value in terms of a thickness of 0.8 mm of 1% or less.6. The crystallized glass according to claim 1 , having a Vickers hardness of 680 or more.7. The crystallized glass according to claim 1 , having a Vickers hardness of 700 or more.8. The crystallized glass according to claim 1 , comprising claim 1 , in mass % on an oxide basis:{'sub': '2', 'from 45 to 74% of SiO; and'}{'sub': '2', 'from 4 to 11.2% of LiO.'}9. The crystallized glass according to claim 1 , comprising claim 1 , in mass % on an oxide basis claim 1 , from 5 to 8% of AlO.10. The crystallized glass according to claim 1 , comprising claim 1 , in mass % on an oxide basis claim 1 , from 1 to 10% in total of either one or more of SnOand ZrO.11. The crystallized glass according to claim 1 , comprising claim 1 , in mass % on an oxide basis claim 1 , from 1 to 7% of PO.12. The crystallized glass according to claim 1 , being a chemically strengthened glass having a compressive stress layer on a surface thereof13. The crystallized glass according to claim 1 , having an average thermal expansion coefficient ...

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Номер записи: 67
03-03-2022 дата публикации

TUNABLE GLASS COMPOSITIONS HAVING IMPROVED MECHANICAL DURABILITY

Номер: US20220064055A1
Автор: Guo Xiaoju, Lezzi Peter Joseph, LUO Jian
Принадлежит:

A glass composition includes: greater than or equal to 24 mol % and less than or equal to 60 mol % SiO; greater than or equal to 23 mol % and less than or equal to 35 mol % AlO; greater than or equal to 3.5 mol % and less than or equal to 35 mol % BO; greater than 0 mol % and less than or equal to 20 mol % LiO; greater than or equal to 0 mol % and less than or equal to 10 mol % NaO; and greater than or equal to 0 mol % and less than or equal to 3 mol % KO. The sum of LiO, NaO, and KO (i.e., RO) in the glass composition may be greater than or equal to 12 mol % and less than or equal to 20 mol %. 1. A glass composition comprising:{'sub': '2', 'greater than or equal to 24 mol % and less than or equal to 60 mol % SiO;'}{'sub': 2', '3, 'greater than or equal to 23 mol % and less than or equal to 35 mol % AlO;'}{'sub': 2', '3, 'greater than or equal to 3.5 mol % and less than or equal to 35 mol % BO;'}{'sub': '2', 'greater than 0 mol % and less than or equal to 20 mol % LiO;'}{'sub': '2', 'greater than or equal to 0 mol % and less than or equal to 10 mol % NaO; and'}{'sub': 2', '2', '2', '2', '2', '2, 'greater than or equal to 0 mol % and less than or equal to 3 mol % KO, wherein RO is greater than or equal to 12 mol % and less than or equal to 20 mol %, RO being the sum of LiO, NaO, and KO.'}2. The glass composition of claim 1 , wherein AlO+BOis greater than or equal to 28 mol % and less than or equal to 60 mol %.3. The glass composition of claim 1 , wherein the glass composition comprises greater than or equal to 24 mol % and less than or equal to 34 mol % AlO.4. The glass composition of claim 1 , wherein the glass composition comprises greater than or equal to 5 mol % and less than or equal to 30 mol % BO5. The glass composition of claim 1 , wherein AlO−RO−RO is greater than or equal to −0.5 mol %.6. The glass composition of claim 1 , wherein the glass composition comprises greater than or equal to 3 mol % and less than or equal to 18 mol % LiO.7. The glass composition ...

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Номер записи: 68
25-02-2016 дата публикации

HIGH-STRENGTH, TRANSLUCENT MG-HIGH QUARTZ MIXED CRYSTAL GLASS CERAMICS

Номер: US20160051451A1
Автор: DURSCHANG Bernhard, Katzschmann Axel, Probst Joern
Принадлежит:

The invention relates to the use of glass ceramics based on a high quartz mixed crystal system for dental purposes, which can be easily mechanically processed in an intermediate stage of crystallization and present high-strength, highly translucent and chemically stable glass ceramics following complete crystallization, wherein said glass or ceramics still have phosphorus and a transition metal compound, selected from titanium and zirconium or a mixture thereof. 1. Use of a magnesium oxide/aluminum oxide/silicon oxide glass or glass ceramics for application in dentistry , wherein said glass or glass ceramics have phosphorus and a transition metal compound , selected from the group consisting of titanium and zirconium or a mixture thereof.2. Use of a magnesium oxide/aluminum oxide/silicon oxide glass or glass ceramics according to claim 1 , wherein said magnesium oxide/aluminum oxide/silicon oxide glass or glass ceramics is a pure oxide glass.5. Use of a magnesium oxide/aluminum oxide/silicon oxide glass or glass ceramics according to claim 1 , wherein the primary crystalline phase is a magnesium high quartz mixed crystal.6. Use of a magnesium oxide/aluminum oxide/silicon oxide glass or glass ceramics according to claim 1 , comprising a crystalline phase consisting of lanthanum phosphate.7. Use according to by means of CAD/CAM and/or for chairside applications.8. Use according to claim 1 , wherein said glass or glass ceramics have additional transition metal cations and are used as dental coloring.9. Use according to claim 1 , wherein a fluorescence additive is added to said glass or glass ceramics to produce a fluorescence effect emulating nature claim 1 , preferably selected from cations of rare-earth elements claim 1 , particularly preferably from Er claim 1 , Eu claim 1 , Tb claim 1 , Pr claim 1 , and Gd.10. Use according to claim 1 , comprising:melting glass at temperatures between 1500 and 1800° C.,active or passive cooling of said glass to room temperature, ...

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Номер записи: 69
14-02-2019 дата публикации

LITHIUM DISILICATE GLASS-CERAMIC COMPOSITIONS AND METHODS THEREOF

Номер: US20190048318A1
Автор: Deng Huayun, Fu Qiang, Mauro John Christopher
Принадлежит:

A bioactive glass-ceramic composition as defined herein. Also disclosed are methods of making and using the disclosed compositions. 111-. (canceled)12. A bioactive composition , comprising: a first crystalline phase comprised of lithium disilicate; and', 'a second crystalline phase selected from the group consisting of at least one of: wollastonite, fluoroapatite, cristobalite, β-quartz, lithiophosphate, or a combination thereof; and, 'a glass-ceramic comprised ofat least one live osteoblast cell.13. The bioactive composition of claim 12 , wherein the glass-ceramic composition comprises a source of:{'sub': '2', '50 to 75 wt % SiO,'}{'sub': 2', '3, '1 to 5 wt % AlO,'}{'sub': 2', '5, '1 to 8 wt % PO,'}2 to 10 wt % CaO,{'sub': '2', '5 to 20 wt % LiO,'}{'sub': '2', '0.5 to 5 wt % NaO,'}{'sub': '2', '0.5 to 8 wt % ZrO, and'}{'sup': '−', '0.1 to 1.0 wt % F, based on a 100 wt % total of the composition.'}14. The bioactive composition of claim 12 , wherein the glass-ceramic composition comprises a source of:{'sub': '2', '50 to 60 wt % SiO,'}{'sub': 2', '3, '1 to 3 wt % AlO,'}{'sub': 2', '5, '2 to 6 wt % PO,'}4 to 8 wt % CaO,{'sub': '2', '7.5 to 12.5 wt % LiO,'}{'sub': '2', '0.5 to 2 wt % NaO,'}{'sub': '2', '1 to 4 wt % ZrO, and'}{'sup': '−', '0.2 to 0.8 wt % F, based on a 100 wt % total of the composition.'}15. The bioactive composition of claim 14 , further comprising: a source of 0.1 to 10 wt % BO claim 14 , based on a 100 wt % total of the composition.16. A method of culturing osteoblast cells claim 14 , comprising:{'claim-ref': {'@idref': 'CLM-00012', 'claim 12'}, 'contacting the bioactive composition of with a liquid medium.'}17. The method of claim 16 , wherein the contacting is configured to produce a proliferation of the at least one osteoblast cell on a surface of the bioactive composition.18. The method of claim 16 , wherein the contacting is configured to produce a proliferation of the at least one osteoblast cell in the liquid medium.19. The method of claim 18 , ...

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Номер записи: 70
08-05-2014 дата публикации

GLASS-CERAMICS AND METHODS OF MAKING THE SAME

Номер: US20140128241A1
Автор: Rosenflanz Anatoly Z., Tangeman Jean A.
Принадлежит: 3M INNOVATIVE PROPERTIES COMPANY

Glass-ceramics comprising AlOand rare earth oxide, yttrium oxide, and/or alkaline earth oxide. Uses of the glass-ceramics include dental articles, orthodontic appliances, abrasive particles, cutting tools, infrared windows, and ceramic bearings. 1. A glass-ceramic comprising at least 20 by weight alumina and at least 15 percent by weight collectively of rare earth oxide , yttrium oxide , and alkaline earth oxide , based on the total weight of the glass-ceramic , wherein the rare earth is selected from the group consisting of La , Ce , Pr , Nd , Sm , Eu , Gd , and combinations thereof , wherein the alkaline earth oxide is selected from the group consisting of BaO , CaO , SrO , MgO , and combinations thereof , wherein the molar ratio of the alumina to the collective rare earth oxide , yttrium oxide , and alkaline earth oxide is up to 3.2 , and wherein the glass-ceramic has an average hardness in a range from 8 GPa to 12 GPa and an average flexural strength of at least 500.2. The glass-ceramic of claim 1 , wherein at least a portion of the alumina and rare earth oxide are present as at least 20 percent by volume of ReAlO claim 1 , based on the total volume of the glass-ceramic claim 1 , and wherein Re is selected from the group consisting of La claim 1 , Ce claim 1 , Pr claim 1 , Nd claim 1 , Sm claim 1 , Eu claim 1 , Gd claim 1 , and combinations thereof.3. The glass-ceramic of that is optically translucent.4. The glass-ceramic of further comprising at least 5 percent by weight collectively of at least one of zirconia or hafnia claim 1 , based on the total weight of the glass-ceramic claim 1 , wherein the molar ratio of alumina to the collective rare earth oxide claim 1 , yttrium oxide claim 1 , and alkaline earth oxide is up to 3.5. The glass-ceramic of claim 1 , wherein the glass-ceramic is a dental article.6. A method of making the glass-ceramic of claim 1 , the method comprising heat-treating a glass having a Tand the glass comprising at least 20 percent by weight ...

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Номер записи: 71
13-02-2020 дата публикации

PATTERNING OF HIGH REFRACTIVE INDEX GLASSES BY PLASMA ETCHING

Номер: US20200048143A1
Автор: MELLI Mauro, Peroz Christophe, Singh Vikramjit
Принадлежит:

Plasma etching processes for forming patterns in high refractive index glass substrates, such as for use as waveguides, are provided herein. The substrates may be formed of glass having a refractive index of greater than or equal to about 1.65 and having less than about 50 wt % SiO. The plasma etching processes may include both chemical and physical etching components. In some embodiments, the plasma etching processes can include forming a patterned mask layer on at least a portion of the high refractive index glass substrate and exposing the mask layer and high refractive index glass substrate to a plasma to remove high refractive index glass from the exposed portions of the substrate. Any remaining mask layer is subsequently removed from the high refractive index glass substrate. The removal of the glass forms a desired patterned structure, such as a diffractive grating, in the high refractive index glass substrate. 128.-. (canceled)29. A method of forming an optical waveguide structure , the method comprising:identifying desired dimensional characteristics of first features to be formed in a high-index glass substrate;identifying etching characteristics of an etching process that is used for forming at least the first features in the high-index glass substrate;determining, based on the identified etching characteristics, biased dimensional characteristics of second features of a patterned layer that is to be formed on the high-index glass substrate prior to forming the first features in the high-index glass substrate;forming the patterned layer on the high-index glass substrate, the forming including forming the second features in the patterned layered, the second features having the biased dimensional characteristics; andtransferring, using the etching process, a pattern of the second features, having the biased dimensional characteristics, into the high-index glass to form the first features, having the desired dimensional characteristics in the high-index ...

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Номер записи: 72
13-02-2020 дата публикации

MIRROR AND MIRROR SUBSTRATE WITH HIGH ASPECT RATIO, AND METHOD AND MEANS FOR PRODUCING SUCH A MIRROR SUBSTRATE

Номер: US20200049868A1
Автор: SCHAEFER Martin, Seibert Volker, Weisenburger Marco, Westerhoff Thomas
Принадлежит: SCHOTT AG

A mirror, a mirror substrate, a method for producing are provided. The mirror substrate is made of a material having a coefficient of mean linear thermal expansion of less than or equal to 1*10/K. The mirror substrate includes at least one feature selected from a group consisting of: a ratio of a lateral dimension to a maximum thickness of at least 100, a ratio of the lateral dimension to the maximum thickness of at least 150, a ratio of the lateral dimension to the maximum thickness of at least 200, a ratio of the lateral dimension to the maximum thickness of at least 300, a weight per unit area of 100 kg/mor less, a weight per unit area of 50 kg/mor less, a weight per unit area of 30 kg/mor less, a weight per unit area of 15 kg/mor less, a mirror surface with a roughness (R) of at most 3.5 μm, and a mirror surface with a roughness (R) of less than 1.2 μm. 1. A mirror substrate comprising:{'sup': '−6', 'a material having a coefficient of mean linear thermal expansion of less than or equal to 1*10/K; and'}{'sup': 2', '2', '2', '2, 'sub': a', 'a, 'at least one feature selected from a group consisting of: a ratio of a lateral dimension to a maximum thickness of at least 100, a ratio of the lateral dimension to the maximum thickness of at least 150, a ratio of the lateral dimension to the maximum thickness of at least 200, a ratio of the lateral dimension to the maximum thickness of at least 300, a weight per unit area of 100 kg/mor less, a weight per unit area of 50 kg/mor less, a weight per unit area of 30 kg/mor less, a weight per unit area of 15 kg/mor less, a mirror surface with a roughness (R) of at most 3.5 μm, and a mirror surface with a roughness (R) of less than 1.2 μm.'}2. The mirror substrate of claim 1 , wherein the coefficient of mean linear thermal expansion is less than or equal to 0.05*10/K.3. The mirror substrate of claim 1 , further comprising a maximum thickness of 50 mm or less.4. The mirror substrate of claim 1 , further comprising a maximum ...

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Номер записи: 73
25-02-2016 дата публикации

GTMS CONNECTOR FOR OIL AND GAS MARKET

Номер: US20160055932A1
Автор: Castillo Julio, Filkins David, Leedecke Charles, Little Ellen Kay, Pichler-Wilhelm Sabine, Suffner Jens
Принадлежит: SCHOTT CORPORATION

A feed-through element for harsh environments is provided that includes a support body with at least one access opening, in which at least one functional element is arranged in an electrically insulating fixing material. The electrically insulating fixing material contains a glass or a glass ceramic with a volume resistivity of greater than 1.0×10Ω cm at the temperature of 350° C. The glass or a glass ceramic has a defined composition range in the system SiO—BO-MO. 2. The feed-through element according to claim 1 , wherein the at least one functional element is selected from the group consisting of an electrical conductor claim 1 , a waveguide claim 1 , a cooling-fluid line claim 1 , a housing of a thermo element claim 1 , and a hollow element which carries further functional elements.3. The feed-through element according to claim 1 , wherein the electrically insulating fixing material fixes the at least one functional element within the access opening to withstand pressures in excess of 42000 psi at an operational temperature of 260° C.4. The feed-through element according to claim 1 , wherein the electrically insulating fixing material hermetically seals the access opening to a helium leaking rate below 1.0×10cc/sec at room temperature or 1.69×10mbar l/s at room temperature.5. The feed-through element according to claim 1 , wherein the electrically insulating fixing material fixes the at least one functional element within the access opening to withstand pressures in excess of 65 claim 1 ,000 psi at room temperature.6. The feed-through element according to claim 1 , wherein the electrically insulating fixing material has a CTE that is smaller than a CTE of the support body claim 1 , whereby at least at room temperature the support body exerts an additional holding pressure to the electrically insulating fixing material.7. The feed-through element according to claim 1 , wherein the support body is made from a ceramic selected from the group consisting of ...

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Номер записи: 74
10-03-2022 дата публикации

SILICOBORATE AND BOROSILICATE GLASSES WITH HIGH REFRACTIVE INDEX AND LOW DENSITY

Номер: US20220073414A1
Автор: LUO Jian, Ma Lina, Priven Alexander I
Принадлежит:

Glasses containing silicon dioxide (SiO) and/or boron oxide (BO) as glass formers and having a refractive index nof greater than or equal to 1.9, as measured at 587.56 nm, and a density of less than or equal to 5.5 g/cm, as measured at 25° C., are provided. Optionally, the glasses may be characterized by a high transmittance in the visible and near-ultraviolet (near-UV) range of the electromagnetic spectrum and/or good glass forming ability. 1. A glass , comprising:{'sub': '2', '#text': 'SiOof from 14.0 mol % to 50.0 mol %;'}{'sub': ['2', '3'], '#text': 'BOat greater than 0.0 mol %;'}{'sub': '2', '#text': 'TiOfrom 5.0 mol % to 40.0 mol %;'}{'sub': ['2', '5'], '#text': 'NbOfrom 2.2 mol % to 50.0 mol %;'}{'sub': '2', '#text': 'ZrOfrom 2.5 mol % to 25.0 mol %;'}{'sub': ['m', 'n'], '#text': 'a total content of rare earth metal oxides (REO) of from 0.0 mol % to 30.0 mol %; and'}other oxide species, when present, present at 0.5 mol % or less, and{'sub': ['2', '3', '2', '2', '3', '2'], '#text': 'wherein a ratio of an amount of BOto an amount of SiO(BO/SiO), in mole percent of oxide, is at least 0.050, and'}{'sub': ['2', '3'], '#text': 'wherein the glass is substantially free of YO.'}2. The glass of claim 1 , wherein the glass comprises at least one of:{'sub': '2', '#text': 'TiOfrom 12.0 mol % to 40.0 mol %;'}{'sub': '2', '#text': 'ZrOfrom 2.5 mol % to 13.0 mol %; and'}{'sub': ['2', '5'], '#text': 'NbOfrom 2.2 mol % to 30.0 mol %.'}3. The glass of claim 1 , wherein at least one of the one or more rare earth metal oxides is selected from the group of LaO claim 1 , GdOand YbO.4. The glass of claim 1 , wherein the glass has:{'sub': 'd', '#text': 'a refractive index nof from 1.90 to 2.10, as measured at a wavelength of 587.56 nm; and'}{'sub': 'RT', 'sup': '3', '#text': 'a density dof 5.5 g/cmor less, as measured at 25° C.'}6. The glass of claim 1 , wherein the glass is characterized by an ability to cool claim 1 , in air claim 1 , from 1100° C. to 500° C. in 2.5 minutes without ...

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Номер записи: 75
10-03-2022 дата публикации

METHOD FOR ENGINEERED POLYPHASE CELLULAR MAGMATICS AND ARTICLES THEREOF

Номер: US20220073416A1
Автор: Hust Robert Michael, Nielsen Gert, Ramsey William Gene, Wilkinson Collin James
Принадлежит:

Methods for engineered polyphase cellular magmatics and articles thereof are disclosed. For example, the magmatics may include multiple phases including a crystalline phase and an amorphous phase. The magmatics may also include one or more reactive agents that may be disposed within cell structures of the magmatics and/or on an exterior of the magmatics, giving the resulting magmatics reactive properties that may differ based on the selected reactive agents and/or placement of the reactive agents within and/or through the magmatics. 1. An article of manufacture , comprising: a non-crystalline portion disposed such that the non-crystalline portion is configured to interact with a substance that comes into contact with the rigid foam mass; and', 'a crystalline portion that is bound to the amorphous portion, in line with the definition of glass ceramics;, 'a rigid foam mass being composed of at least one silicate based component and havingwherein at least one of the amorphous portion or the crystalline portion includes a material configured to react when contacted by the substance.2. The article of manufacture of claim 1 , wherein the rigid foam mass includes open cell structures.3. The article of manufacture of claim 1 , wherein the rigid foam mass includes closed cell structures.4. The article of manufacture of claim 1 , wherein the rigid foam mass includes open cell structures and closed cell structures.5. An article of manufacture claim 1 , comprising: an amorphous portion disposed such that the amorphous portion is configured to interact with a substance that contacts the amorphous portion; and', 'a crystalline portion bound to the amorphous portion, the crystalline portion disposed such that the crystalline portion is configured to at least contact the substance;, 'an engineered foam mass havingwherein at least one of the amorphous portion or the crystalline portion includes a material configured to react when contacted by the substance.6. The article of ...

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Номер записи: 76
10-03-2022 дата публикации

STEAM STRENGTHENABLE GLASS COMPOSITIONS WITH LOW PHOSPHOROUS CONTENT

Номер: US20220073426A1
Автор: Gross Timothy Michael, Wu Jingshi
Принадлежит:

Glass-based articles that include a compressive stress layer extending from a surface of the glass-based article to a depth of compression are formed by exposing glass-based substrates to water vapor containing environments. The glass-based substrates include low amounts of phosphorous. The methods of forming the glass-based articles may include elevated pressures and/or multiple exposures to water vapor containing environments. 1. A method , comprising:exposing a glass-based substrate to a steam environment with a pressure greater than or equal to 0.1 MPa, and a temperature of greater than or equal to 150° C. to form a glass-based article with compressive stress layer extending from the surface of the glass-based article to a depth of compression and a hydrogen-containing layer extending from the surface of the glass-based article to a depth of layer,wherein the compressive stress layer comprises a compressive stress of greater than or equal to 10 MPa, a hydrogen concentration of the hydrogen-containing layer decreases from a maximum hydrogen concentration to the depth of layer, and the glass-based substrate comprises:{'sub': '2', 'greater than or equal to 55 mol % to less than or equal to 70 mol % SiO,'}{'sub': 2', '3, 'greater than or equal to 5 mol % to less than or equal to 13 mol % AlO,'}{'sub': 2', '5, 'greater than or equal to 0.1 mol % to less than or equal to 3 mol % PO,'}{'sub': '2', 'greater than or equal to 14 mol % to less than or equal to 23 mol % KO, and'}greater than or equal to 1 mol % to less than or equal to 4 mol % ZnO.2. The method of claim 1 , wherein the glass-based substrate comprises greater than or equal to 0 mol % to less than or equal to 5 mol % BO.3. The method of claim 1 , wherein the glass-based substrate comprises greater than or equal to 0 mol % to less than or equal to 1 mol % NaO.4. The method of claim 1 , wherein the glass-based substrate is substantially free of NaO.5. The method of claim 1 , wherein the glass-based substrate ...

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Номер записи: 77
15-05-2014 дата публикации

DURABLE GLASS CERAMIC COVER GLASS FOR ELECTRONIC DEVICES

Номер: US20140134397A1
Автор: Amin Jaymin, Beall George Halsey, Smith Charlene Marie
Принадлежит: CORNING INCORPORATED

The invention relates to glass articles suitable for use as electronic device housing/cover glass which comprise a glass ceramic material. Particularly, a cover glass comprising an ion-exchanged glass ceramic exhibiting the following attributes (1) optical transparency, as defined by greater than 90% transmission at 400-750 nm; (2) a fracture toughness of greater than 0.6 MPa·m; (3) a 4-point bend strength of greater than 350 MPa; (4) a Vickers hardness of at least 450 kgf/mmand a Vickers median/radial crack initiation threshold of at least 5 kgf; (5) a Young's Modulus ranging between about 50 to 100 GPa; (6) a thermal conductivity of less than 2.0 W/m° C., and (7) and at least one of the following attributes: (i) a compressive surface layer having a depth of layer (DOL) greater and a compressive stress greater than 400 MPa, or, (ii) a central tension of more than 20 MPa. 1. An article suitable as a cover glass for a portable electronic device , the article comprising a glass ceramic exhibiting:a. optical transparency of greater than 60%, as defined by the transmission of light over the range of from 400-750 nm through 1 mm of the glass ceramic;b. colorlessness, as defined by having the values of L*≧90; 0.1≦a*≦−0.1; and 0.4≦b*≦−0.4 on the CIE 1976 Lab color space as measured in transmission through 1 mm of glass ceramic; [{'sup': '1/2;', '(i) a fracture toughness of greater than 0.60 MPa·m'}, '(ii) a 4-point bend strength of greater than 350 MPa;', {'sup': '2', '(iii) a Vickers hardness of at least 450 kgf/mm;'}, '(iv) a Vickers median/radial crack initiation threshold of at least 5 kgf;', "(v) a Young's Modulus ranging between 50 to 100 GPa; and", '(vi) a thermal conductivity of less than 2.0 W/m° C.; and, 'c. at least one of the following attributes (i) a compressive surface layer having a depth of layer (DOL) greater than or equal to 20 μm and a compressive stress greater than 400 MPa, or,', '(ii) a central tension of more than 20 MPa., 'd. at least one of the ...

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Номер записи: 78
03-03-2016 дата публикации

HIGH STRENGTH AND AESTHETIC LITHIUM DISILICATE CRYSTALLINE GLASS-CERAMICS CONTAINING CRISTOBALITE CRYSTAL AND PREPARATION METHOD THEREOF

Номер: US20160060159A1
Автор: Ha Sung ho, HONG Young Pyo, Jeon Hyun jun, Kim Cheol young, Kim Joon Hyung, KIM Yong su, Lim Hyung bong, Oh Kyung sik
Принадлежит:

Provided is lithium disilicate crystalline glass containing cristobalite crystal phase for high strength and aesthetic traits and its manufacturing process thereof. Exemplary embodiments of the present invention provide the high strength and aesthetic lithium disilicate crystalline glass, one kind of dental restoration materials, and its manufacturing method which induces the growth of the different crystal phase, cristobalite, from glass with lithium disilicate crystal. 1. A lithium silicate glass composition for crystallizing to a lithium disilicate glass-ceramic having a crystobalite crystal phase , the lithium silicate glass composition comprising:{'sub': 2', '2', '2', '5', '2', '3', '2, 'a glass component comprising 11-13 wt % LiO, 70.0-77.0 wt % SiO, 2-3 wt % POas a nuclei formation agent, 2-5 wt % AlOto increase glass transition temperature, softening temperature, and chemical durability of the glass component, 2.0-3.0 wt % ZrO, and 1-4 wt % colorant.'}2. The lithium silicate glass component of claim 1 , further comprising 1-5 wt % KO and/or NaO claim 1 , and 0.5-3 wt % CaO.3. The lithium silicate glass component of claim 2 , wherein the lithium disilicate glass-ceramic comprises 0.5-2 wt % KO.4. The lithium silicate glass composition of claim 1 , wherein an amount of the SiOis in a range of 72.0-75.0 wt % claim 1 , and wherein the glass component has a thermal expansion coefficient in a range of 9.5-9.9×10/° C. in 100-400° C. range.5. The lithium silicate glass composition of claim 1 , wherein the glass component comprises the 2.0-3.0 wt % ZrO claim 1 , without including MgO claim 1 , ZnO claim 1 , F claim 1 , and LaO.6. A lithium disilicate glass-ceramic having a crystobalite crystal phase claim 1 , the lithium disilicate glass-ceramic comprising the glass component of .7. The lithium disilicate glass-ceramic of claim 6 , further comprising 1-5 wt % KO and/or NaO claim 6 , and 0.5-3 wt % CaO.8. The lithium disilicate glass-ceramic of claim 7 , wherein the ...

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Номер записи: 79
15-05-2014 дата публикации

TRANSPARENT, COLORLESS, TIN-FINED LAS GLASS-CERAMICS WITH IMPROVED MICROSTRUCTURE AND OPTICAL PROPERTIES

Номер: US20140135201A1
Автор: Chauvel-Melscoet Isabelle Marie, Comte Marie Jacqueline Monique
Принадлежит: Eurokera

Transparent, essentially colorless and non-diffusing β-quartz glass-ceramics and glass compositions for forming the same have a composition, free of arsenic oxide, antimony oxide and rare earth oxides except for inevitable trace amounts, which contains, expressed as percentages by weight of oxides 62-72% of SiO, 20-23% of AlO, 2.8-5% of LiO, 0.1-0.6% of SnO, 1.9-4% of TiO, 1.6-3% of ZrO, less than 0.4% of MgO, 2.5-6% of ZnO and/or BaO and/or SrO, less than 250 ppm of FeO; and their crystallites present in the β-quartz solid solution have an average size of less than 35 nm. The glass-ceramics exhibit low thermal expansion and are easily obtained at an industrial scale. 1. A transparent , essentially colorless and non-diffusing glass-ceramic of the lithium aluminosilicate type containing a β-quartz solid solution as a main crystalline phase , wherein its composition , free of arsenic oxide , antimony oxide and rare earth oxides except for inevitable trace amounts , contains , expressed as percentages by weight of oxides:{'sub': '2', '62-72% of SiO,'}{'sub': 2', '3, '20-23% of AlO,'}{'sub': '2', '2.8-5% of LiO,'}{'sub': '2', '0.1-0.6% of SnO,'}{'sub': '2', '1.9-4% of TiO,'}{'sub': '2', '1.6-3% of ZrO,'}less than 0.4% of MgO,2.5-6% of ZnO and/or BaO and/or SrO,{'sub': 2', '3, 'less than 250 ppm of FeO; and the crystallites present in said β-quartz solid solution have an average size of less than 35 nm.'}2. The glass-ceramic according to claim 1 , the composition of which contains less than 0.1% of MgO.3. The glass-ceramic according to claim 1 , the composition of which is free of MgO except for inevitable trace amounts.4. The glass-ceramic according to claim 1 , the composition of which contains from 3.5 to 5% of at least one of ZnO claim 1 , BaO and SrO.5. The glass-ceramic according to claim 1 , the composition of which contains from 0.4 to 3% of ZnO claim 1 , and from 0 to 5% of BaO.6. The glass-ceramic according to claim 1 , the composition of which contains from 0. ...

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Номер записи: 80
15-05-2014 дата публикации

LITHIUM SILICATE GLASS CERAMIC AND LITHIUM SILICATE GLASS COMPRISING A MONOVALENT METAL OXIDE

Номер: US20140135202A1
Автор: Apel Elke, Höland Wolfram, Rheinberger Volker, Ritzberger Christian
Принадлежит: IVOCLAR VIVADENT AG

Lithium silicate glass ceramics and glasses comprising specific oxides of monovalent elements are described which crystallize at low temperatures and are suitable in particular as dental materials. 1. Lithium silicate glass ceramic which comprises a monovalent metal oxide selected from RbO , CsO and mixtures thereof.2. Glass ceramic according to claim 1 , wherein lithium silicate glass ceramic is excluded which comprises at least 6.1 wt.-% ZrO.3. Glass ceramic according to claim 1 , wherein lithium silicate glass ceramic is excluded which comprises at least 8.5 wt.-% transition metal oxide selected from the group consisting of oxides of yttrium claim 1 , oxides of transition metals with an atomic number from 41 to 79 and mixtures of these oxides.4. Glass ceramic according to claim 1 , which comprises less than 1.0 wt.-% KO.5. Glass ceramic according to claim 1 , which comprises less than 5.3 wt.-% AlOor in which the molar ratio of monovalent metal oxide to AlOis at least 0.5.6. Glass ceramic according to claim 1 , which comprises less than 3.8 wt.-% BaO.7. Glass ceramic according to claim 1 , which comprises the monovalent metal oxide or mixtures thereof in an amount of from 0.1 to 17.0 wt.-%.8. Glass ceramic according to claim 1 , which has lithium metasilicate as a main crystal phase.9. Glass ceramic according to claim 1 , which has lithium disilicate as a main crystal phase.10. Glass ceramic according to claim 1 , which comprises 55.0 to 85.0 wt.-% SiO.11. Glass ceramic according to claim 1 , which comprises 9.0 to 20.0 wt.-% LiO.12. Glass ceramic according to claim 1 , which comprises 0 to 12.0 wt.-% PO.13. Glass ceramic according to claim 1 , which comprises KO claim 1 , NaO and mixtures thereof in an amount of less than 1.0 wt.-%.15. Glass ceramic according to claim 1 , which has lithium disilicate as a main crystal phase and a fracture toughness claim 1 , measured as Kvalue claim 1 , of at least about 2.0 MPa·m.16. Glass ceramic according to claim 1 , wherein ...

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Номер записи: 81
01-03-2018 дата публикации

ULTRAVIOLET TRANSMITTING GLASS

Номер: US20180057393A1
Автор: Sakagami Takahiro, SHIRATORI Makoto
Принадлежит: Asahi Glass Company, Limited

An ultraviolet transmitting glass containing, in mole percentage based on oxides, 55 to 80% of SiO, 12 to 27% of BO, 4 to 20% of R20 (where R represents an alkali metal selected from a group consisting of Li, Na, and K) in total, 0 to 3.5% of AlO, 0 to 5% of R′O (where R′ represents an alkaline earth metal selected from a group consisting of Mg, Ca, Sr, and Ba) in total, 0 to 5% of ZnO, and 0 to 10% of ZrO, wherein transmittance at a wavelength of 254 nm in terms of spectral transmittance at a plate thickness of 0.5 mm is 70% or more. The glass with high ultraviolet light transmittance, in particular, high deep ultraviolet light transmittance is provided. 1. An ultraviolet transmitting glass containing , in mole percentage based on oxides ,{'sub': '2', '55 to 80% of SiO,'}{'sub': 2', '3, '12 to 27% of BO,'}{'sub': '2', '4 to 20% of RO in total, where R represents at least one kind of an alkali metal selected from a group consisting of Li, Na, and K,'}{'sub': 2', '3, '0 to 3.5% of AlO,'}0 to 5% of R′O in total, where R′ represents at least one kind of an alkaline earth metal selected from a group consisting of Mg, Ca, Sr, and Ba,0 to 5% of ZnO, and{'sub': '2', '0 to 10% of ZrO,'}wherein transmittance at a wavelength of 254 nm in terms of spectral transmittance at a plate thickness of 0.5 mm is 70% or more.2. An ultraviolet transmitting glass contains , in mole percentage based on oxides ,{'sub': '2', '55 to 80% of SiO,'}{'sub': 2', '3, '12 to 27% of BO,'}{'sub': '2', '4 to 20% of RO in total, where R represents at least one kind of an alkali metal selected from a group consisting of Li, Na, and K,'}{'sub': 2', '3, '0 to 3.5% of AlO,'}0 to 5% of R′O in total, where R′ represents at least one kind of an alkaline earth metal selected from a group consisting of Mg, Ca, Sr, and Ba,0 to 5% of ZnO, and{'sub': 2', '5, '0 to 5% of TaO,'}wherein transmittance at a wavelength of 254 nm in terms of spectral transmittance at a plate thickness of 0.5 mm is 70% or more.3. The ...

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Номер записи: 82
01-03-2018 дата публикации

LOW-TEMPERATURE CO-FIRED CERAMIC MATERIAL AND PREPARATION METHOD THEREOF

Номер: US20180057395A1
Автор: Liu Jian, NIE Min
Принадлежит:

A low-temperature co-fired ceramic material comprises the following components in percentage by weight: 35-50% of CaO, 5-15% of BO, 40-55% of SiO, 1-5% of nanometer AlO, 1-5% of MgO and 1-5% of nanometer ZrO. A preparation method comprises the following steps: ball milling and mixing according to the formula, sintering at a high temperature, quenching in deionized water, grinding, performing wet ball-milling, drying and grinding; and finally, granulating to prepare a green body, discharging glue, and sintering, to obtain a low-temperature co-fired ceramic material. According to the low-temperature co-fired ceramic material and the preparation method thereof provided in the present disclosure, the prepared low-temperature co-fired ceramic material has the advantages of low dielectric constant, low loss, good overall performance and the like. 1. A low-temperature co-fired ceramic material , comprising the following components in percentage by weight: 35-50% of CaO , 5-15% of BO , 40-55% of SiO , 1-5% of nanometer AlO , 1-5% of MgO and 1-5% of nanometer ZrO.2. A method for preparing a low-temperature co-fired ceramic material , comprising the following steps:{'sub': 3', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '2', '2', '3', '2, 'S1: weighing the raw materials CaCO, BO, SiO, AlO, MgO, and ZrOin percentage by weight: 35-50% of CaO, 5-15% of BO, 40-55% of SiO, 1-5% of nanometer AlO, 1-5% of MgO and 1-5% of nanometer ZrO, to obtain chemically pure CaO, BO, SiO, nanometer AlO, MgO, nanometer ZrO, ball milling and mixing the mixed powder where the ball milling medium is zirconia balls, and sieving through a 60-mesh screen after the mixed powder is mixed uniformly;'}S2: sintering the sieved mixed powder obtained in Step S1 at a high temperature, and holding for a predetermined period of time, to melt and homogenize the mixed powder completely to obtain a melt;S3: quenching the melt in deionized water, to obtain a transparent broken glass body;S4: ...

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Номер записи: 83
01-03-2018 дата публикации

GLASSES AND GLASS CERAMICS INCLUDING A METAL OXIDE CONCENTRATION GRADIENT

Номер: US20180057401A1
Автор: Hu Guangli, Smith Charlene Marie, Tang Zhongzhi, Tietje Steven Alvin
Принадлежит:

Embodiments of a glass-based article including a first surface and a second surface opposing the first surface defining a thickness (t) of about 3 millimeters or less (e.g., about 1 millimeter or less), and a stress profile, wherein all points of the stress profile between a thickness range from about 0·t up to 0.3·t and from greater than 0.7·t, comprise a tangent that is less than about −0.1 MPa/micrometers or greater than about 0.1 MPa/micrometers, are disclosed. In some embodiments, the glass-based article includes a non-zero metal oxide concentration that varies along at least a portion of the thickness (e.g., 0·t to about 0.3·t). In some embodiments, the concentration of metal oxide or alkali metal oxide decreases from the first surface to a point between the first surface and the second surface and increases from the point to the second surface. The concentration of the metal oxide may be about 0.05 mol % or greater or about 0.5 mol % or greater throughout the thickness. Methods for forming such glass-based articles are also disclosed. 1. A glass substrate comprising:{'sub': '2', 'from about 60 mol. % to about 70 mol. % SiO;'}from about 2 mol. % to about 4 mol. % MgO; and{'sub': '2', 'claim-text': [{'sub': 2', '2', '2', '2', '2', '2, 'a ratio of LiO to RO is greater than 0.5 and less than or equal to 1, wherein RO is the sum (mol. %) of LiO, KO, and NaO in the glass substrate; and'}, {'sub': '2', 'the glass substrate is substantially free of TiO.'}], 'from about 2 mol. % to about 10 mol. % LiO, wherein2. The glass substrate of further comprising from about 5 mol. % to about 28 mol. % AlO.3. The glass substrate of claim 1 , wherein AlOis present in an amount from about 5 mol. % to about 20 mol. %.4. The glass substrate of further comprising from about 0 mol. % to about 8 mol. % BO.5. The glass substrate of further comprising from about 0 mol. % to about 6 mol. % NaO.6. The glass substrate of further comprising from about 1 mol. % to about 2 mol. % CaO.7. The ...

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Номер записи: 84
02-03-2017 дата публикации

DENTAL GLASS-CERAMICS BLOCK BONDED WITH ABUTMENT AND PREPARATION METHOD THEREOF

Номер: US20170057865A1
Автор: Ha Sung ho, HONG Young Pyo, Jeon Hyun jun, Kim Cheol young, Kim Joon Hyung, KIM Yong su, Lim Hyung bong, Oh Kyung sik
Принадлежит:

A method of bonding a high-strength zirconia post serving as a core in a glass-ceramic block, a method of bonding a metal link fastened with an implant fixture to the zirconia post, and glass-ceramic bondable to the zirconia post and a preparation method thereof, when preparing artificial teeth through a CAD/CAM processing method by using the glass-ceramic block as an artificial-teeth material. The lithium disilicate glass-ceramics containing cristobalite crystalline includes glass-ceramics composition including 10 to 15 wt % LiO, 68 to 76 wt % SiO, 2 to 5 wt % POworking as a nuclei formation agent, 0 to 5 wt % AlOto increase glass transition temperature and softening temperature and increase chemical durability of the glass, 2 to 3 wt % ZrO, 0.5 to 3 wt % CaO for enhancing a thermal expansion coefficient of the glass, 0.5 to 5 wt % NaO, 0.5 to 5 wt % KO, and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of MgO, ZnO, F, and LaO. 1. A lithium silicate glass-ceramic , comprising:{'sub': 2', '2', '2', '5, 'b': 68', '76, 'a glass composition comprising 10 to 15 wt % lithium oxide (LiO),- wt % silicon dioxide (SiO), 2 to 5 wt % phosphorus pentoxide (PO) as'}{'sub': 2', '3', '2', '2', '2', '2', '3, '0 to 5 wt % aluminum oxide (AlO) as a, 2 to 3 wt % zirconium oxide (ZrO), 0.5 to 3 wt % calcium oxide (CaO), 0.5 to 5 wt % sodium oxide (NaO), 0.5 to 5 wt % potassium oxide (KO), and 1 to 2 wt % colorants, and 0 to 2.0 wt % mixture of magnesium oxide (MgO), zinc oxide (ZnO), fluorine (F), and lanthanum oxide (LaO),'} the phosphorus pentoxide is a nuclei formation agent,', 'the aluminum oxide increases the glass transition temperature and the chemical durability of the glass composition, and', 'the calcium oxide enhances the thermal expansion coefficient of the glass composition., 'wherein2. The lithium silicate glass-ceramic of claim 1 , wherein the lithium silicate glass composition further comprises 0.5 to 5 wt % potassium oxide (KO) and 0.5 to 3 wt % calcium oxide (CaO). ...

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Номер записи: 85
02-03-2017 дата публикации

WHITE, OPAQUE, ß-SPODUMENE GLASS-CERAMIC ARTICLES WITH TUNABLE COLOR AND METHODS FOR MAKING THE SAME

Номер: US20170057866A1
Автор: Fu Qiang, Smith Charlene Marie
Принадлежит:

Crystallizable glasses, glass-ceramics, IXable glass-ceramics, and IX glass-ceramics are disclosed. The glass-ceramics exhibit β-spodumene ss as the predominant crystalline phase. These glasses and glass-ceramics, in mole %, include: 62-75 SiO; 10.5-18 AlO; 5-14 LiO; 2-12 BO; and 0.4-2 FeO. Additionally, these glasses and glass-ceramics can exhibit the following criteria: 1. A process for making a glass-ceramic comprising: [{'sub': '2', 'i) SiOin a range from about 62 to about 75,'}, {'sub': 2', '3, 'ii) AlOin a range from about 10 to about 18,'}], 'a) heating a crystallizable glass at a rate in a range from about 1° C./min to about 10° C./min to a nucleation temperature in a range from about 700° C. and 810° C., wherein, in mole %, the crystallizable glass comprises{'sub': '2', 'iii) LiO in a range from about 5 to about 14,'}{'sub': 2', '3, 'iv) BOin a range from about 2 to about 12, and'}{'sub': 2', '3', '2', '2', '2', '3', '2', '3', '2', '3', '2', '3', '2', '5, 'v) a metal oxide selected from group consisting of CoO, CrO, CuO, MnO, SbO, InO, BiO, NiO, VO, TaO, and combinations thereof in a range from about 0.01 to about 2, and'}b) maintaining the crystallizable glass at the nucleation temperature to produce a nucleated crystallizable glass;c) heating the nucleated crystallizable glass at a rate in a range from about 1° C./min to about 10° C./min to a crystallization temperature of in a range from about 850° C. to about 1200° C.; andd) maintaining the nucleated crystallizable glass at the crystallization temperature to produce a glass-ceramic having β-spodumene as a predominant crystalline phase.2. The process of claim 1 , wherein the glass-ceramic article comprises a color presented in CIELAB color space coordinates for an observer angle of 10° and a CIE illuminant F02 determined from reflectance spectra measurements using a spectrophotometer with specular reflectance included comprising:a) CIE a* in a range from about −0.5 to about 0.5;b) CIE b* in a range from ...

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Номер записи: 86
20-02-2020 дата публикации

GLASS-CERAMIC ARTICLES WITH IMPROVED STRESS PROFILES

Номер: US20200055764A1
Автор: Duffy Delena Lucinda Justice, Fieno Constance L., Hall Jill Marie, Jin Yuhui, Schneider Vitor Marino
Принадлежит:

Glass-ceramic articles are manufactured by an ion exchange process that results in glass-based articles having improved stress profiles. A knee may be located at a depth of 3 microns or deeper. A compressive stress at a surface may be 200 MPa or more and at a knee may be 20 MPa or more. A non-sodium oxide may have a non-zero concentration that varies from the first surface to a depth and a depth of compression (DOC) may be located at 0.10·t, or even at 0.17·t or deeper. A two-step ion exchange (DIOX) includes, for example, a potassium bath in a first treatment to form a spike in a spike region of the stress profile, followed by a second treatment which includes, for example, a potassium and sodium mixed bath to maintain the spike and form a tail region of the stress profile. The glass-ceramic articles may thereby avoid developing a vitreous surface layer, which facilitates repeatable and reliable measurement of waveguide modes and determination of compressive stress in the surface (CS) and depth of the spike. 1. A glass-ceramic article comprising:a glass-ceramic substrate having opposing first and second surfaces defining a substrate thickness (t);a central composition at a center of the glass-ceramic article containing an alkali metal and a crystalline phase, wherein the crystalline phase is 20% or more by weight of the central composition; and one or more of:(a) a stress profile comprising: a knee that is at a depth of 3 micrometers or more;(b) a stress profile comprising: a first compressive stress at the first surface that is 200 MPa or more; and a second compressive stress at a knee that is 20 MPa or more; or(c) a non-sodium oxide having a non-zero concentration that varies from the first surface to a depth of layer of the non-sodium oxide; and a stress profile comprising a knee and a depth of compression (DOC) that is located at 0.10·t or deeper.2. The glass-ceramic article of claim 1 , wherein the alkali metal of the central composition is lithium.3. The ...

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Номер записи: 87
21-02-2019 дата публикации

GLASS CERAMIC WORKTOP

Номер: US20190059131A1
Автор: DEBREYER Grégory, DEMOL Franck, Roux Nicolas, Vilato Pablo
Принадлежит: EUROKERA S.N.C.

An item of equipment includes at least one worktop formed of at least one substrate made of monolithic glass material with a surface area of greater than 0.7 m. The substrate exhibits a luminosity L* of greater than 10, a light transmission Tof less than 50%, and an opacity indicator of greater than 90. The item of equipment also includes at least one heating element and at least one interface for communication with at least one element of the worktop, such as the heating element(s), and/or with at least one external element for wireless communication. The item of equipment is devoid of light source(s). 1. An item of equipment , comprising:{'sup': '2', 'sub': 'L', 'at least one worktop formed of at least one substrate made of monolithic glass material with a surface area of greater than 0.7 m, said substrate exhibiting a luminosity L* of greater than 10, a light transmission Tof less than 50%, and an opacity indicator of greater than 90,'}at least one heating element,at least one interface for communication with at least one element of the worktop, and/or with at least one external element for wireless communication,said item of equipment additionally being devoid of light source(s).2. The item of equipment as claimed in claim 1 , wherein the surface area of the substrate made of glass material is greater than 0.9 m claim 1 , the thickness of said substrate is at least 2 mm claim 1 , and the thickness of the substrate is less than 15 mm.3. The item of equipment as claimed in claim 1 , wherein the substrate made of glass material occupies at least 50% of the surface area of the worktop.4. The item of equipment as claimed in claim 1 , wherein the substrate is made of tempered glass or of glass-ceramic.5. The item of equipment as claimed in claim 1 , wherein the substrate exhibits a flatness of less than 0.1% of the diagonal of the substrate.6. The item of equipment as claimed in claim 1 , wherein the substrate is opaque and/or is colored or tinted in its bulk claim 1 ...

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Номер записи: 88
22-05-2014 дата публикации

SUBSTRATE FOR OLED, METHOD OF FABRICATING THE SAME AND ORGANIC LIGHT-EMITTING DEVICE HAVING THE SAME

Номер: US20140141958A1
Автор: AHN Myeongjin, Cho Eun Young, KIM Jhee-Mann, Kim JooSok, Lee Jaeho, LEE Kiyeon, Park Seong-Sik
Принадлежит: SAMSUNG CORNING PRECISION MATERIALS CO., LTD.

A substrate for an organic light-emitting diode (OLED) which can improve the light extraction efficiency of the organic light-emitting device while securing transmittance, a method of fabricating the same, and an organic light-emitting device having the same. The substrate for an OLED is a substrate on which the OLED is to be deposited. The substrate is made of transparent crystallized glass in which a number of crystal grains are distributed. 1. A substrate on which an organic light-emitting diode is to be deposited , comprising transparent crystallized glass in which a number of crystal grains are distributed.2. The substrate of claim 1 , wherein a size of the crystal grains ranges from 0.01 to 3 μm.3. The substrate of claim 1 , wherein the transparent crystallized glass comprises an amorphous structure in a range from 10 to 25 volume percent.4. The substrate of claim 1 , wherein the transparent crystallized glass comprises lithium aluminosilicate glass.5. The substrate of claim 4 , wherein the crystal grains comprise a crystalline phase of one selected from the group consisting of cordierite claim 4 , silica claim 4 , eucryptite and spodumene.6. The substrate of claim 1 , wherein a surface roughness (R) of the substrate is 0.01 μm or less.7. The substrate of claim 1 , wherein a visible transmittance of the substrate is 50% or greater.8. A method of fabricating a substrate which comprises transparent crystallized glass claim 1 , and on which an organic light-emitting diode is to be deposited claim 1 , the method comprising heat-treating the transparent crystallized glass that contains a nucleation agent that promotes precipitation of crystal grains claim 1 , thereby controlling a size of the crystal grains that are to be precipitated.9. The method of claim 8 , wherein heat-treating the transparent crystallized glass comprises heat-treating the transparent crystallized glass at a temperature ranging from 850 to 1000° C. for 1 to 2 hours.10. The substrate of claim 8 ...

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Номер записи: 89
22-05-2014 дата публикации

PROCESS FOR PREPARING A GLASS-CERAMIC BODY

Номер: US20140141960A1
Автор: Borczuch-Laczka Maria, Cholewa-Kowalska Katharzyna, Laczka Karolina
Принадлежит: Straumann Holding AG

Process for preparing glass-ceramic body including the steps of providing a basic glass body and subjecting the basic glass body to a thermal treatment whereby a crystalline phase embedded in a glass matrix is formed. The basic glass body is made of a composition comprising 65 to 72 wt-% SiO, at least 10.1 wt-% LiO and at least 10.1 wt-% AlObased on the total weight of the composition, the proportion of LiO to AlObeing from 1:1 to 1.5:1. The thermal treatment involves a nucleation step followed by several crystallization steps at different temperatures, whereby at least two different crystalline phases are formed. 1. Process for preparing a glass-ceramic body comprising the steps of providing a basic glass body and subjecting the basic glass body to a thermal treatment whereby a crystalline phase embedded in a glass matrix is formed ,wherein the basic glass body is made of a composition comprising 65 to 72 wt-% SiO2, at least 10.1 wt-% Li2O and at least 10.1 wt-% Al2O3 based on the total weight of the composition, the proportion of Li2O to Al2O3 being from 1:1 to 1.5:1, and the thermal treatment involves a nucleation step followed by a first crystallization step at a first temperature range and a second crystallization step at a second temperature range different from the first temperature range, wherein at least two different crystalline phases are formed.2. Process for preparing a glass-ceramic body according to claim 1 , wherein a first region of the glass body is subjected to the first crystallization step and a second region of the glass body different to the first region is subjected to the second crystallization step such that the proportion of the first crystalline phase is higher in the first region than in the second region and the proportion of the second crystalline phase is higher in the second region than in the first region.3. Process according to claim 2 , wherein the regions are heated to the respective temperature ranges by means of laser ...

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Номер записи: 90
28-02-2019 дата публикации

COLOURED TRANSPARENT LITHIUM ALUMINIUM SILICATE GLASS-CERAMIC AND USE THEREOF

Номер: US20190062201A1
Автор: Bockmeyer Matthias, Bug Michael, Hochrein Oliver, Martens Uwe, SCHÖNBERGER Klaus, Spier Martin, Stinner Johannes, Weiss Evelin, ZENKER Thomas
Принадлежит: SCHOTT AG

A description is given of a coloured, transparent, lithium aluminium silicate glass-ceramic and also of the use thereof, said glass-ceramic possessing a light transmission Y of 2.5% to 10% and a spectral transmission τof more than 1.0%. 1. Coloured , transparent , lithium aluminium silicate glass-ceramic ,characterized by{'sub': 2', '3', '2', '3, 'an AsOand/or SbOcontent of in total 0 to <1000 ppm,'}{'sub': 2', '5, 'a VOcontent of 55 ppm to 200 ppm,'}{'sub': 2', '3, 'an FeOcontent of 450 ppm to 1000 ppm, and'}{'sub': 2', '3', '2', '5, 'a ratio of FeO/VO(both in wt %) of 3-9,'}{'sub': 2', '3, 'wherein the lithium aluminium silicate glass-ceramic is free from CoO, NiO and CrO,'}and wherein the lithium aluminosilicate glass-ceramic has the following transmission qualities:Y(D65, 2°) 2.5−10%,{'sub': '(at 465 nm)', 'τ>1.0%, and'}{'sub': '(at 465 nm)', 'a difference (Y(D65, 2°)−τ) of ≤3%.'}2. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterized byY(D65, 2°)>2.5-10%,{'sub': '(at 465 nm)', 'τ>1.2%, and'}{'sub': '(at 465 nm)', 'a difference (Y(D65, 2°)−τ) of <3%.'}3. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterized by{'sub': '(630 nm)', 'τof 10.9%±3.8%.'}6. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterized{'sub': '2', 'in that the SnOcontent is 0.05-0.4 wt %.'}7. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterized by{'sub': 2', '3', '2', '5, 'a ratio of FeO/VO(both in wt %) of 5-7.'}8. Lithium aluminium silicate glass-ceramic according to claim 1 , characterized by{'sub': 2', '3, 'an FeOcontent of 700 ppm to 1000 ppm.'}9. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterized by{'sub': 2', '5, 'a VOcontent of 100 ppm to 200 ppm.'}10. Lithium aluminium silicate glass-ceramic according to claim 1 ,characterizedin that it comprises high-quartz mixed crystals as main crystal phase.11. Glass-ceramic plate comprising a glass-ceramic according to claim 1 , ...

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Номер записи: 91
17-03-2022 дата публикации

Li2O-Al2O3-SiO2-BASED CRYSTALLIZED GLASS

Номер: US20220081348A1
Автор: Yokota Yuki
Принадлежит:

Provided is a LiO—AlO—SiO-based crystallized glass that has a high permeability to light in an ultraviolet to infrared range and is less susceptible to breakage. A LiO—AlO—SiO-based crystallized glass contains, in terms of % by mass, 40 to 90% SiO, 1 to 10% LiO, 5 to 30% AlO, 0 to 20% SnO, over 0 to 20% ZrO, 0 to below 2% TiO, 0 to 10% MgO, and 0 to 10% POand includes a β-spodumene solid solution precipitated as a main crystalline phase. 1: A LiO—AlO—SiO-based crystallized glass containing , in terms of % by mass , 40 to 90% SiO , 1 to 10% LiO , 5 to 30% AlO , 0 to 20% SnO , over 0 to 20% ZrO , 0 to below 2% TiO , 0 to 10% MgO , and 0 to 10% POand including a β-spodumene solid solution precipitated as a main crystalline phase.2: The LiO—AlO—SiO-based crystallized glass according to claim 1 , further containing claim 1 , in terms of % by mass claim 1 , 0 to 10% NaO claim 1 , 0 to 10% KO claim 1 , 0 to 10% CaO claim 1 , 0 to 10% SrO claim 1 , 0 to 10% BaO claim 1 , 0 to 10% ZnO claim 1 , and 0 to 10% BO.3: The LiO—AlO—SiO-based crystallized glass according to claim 1 , containing claim 1 , in terms of % by mass claim 1 , 0 to 2% SnO.4: The LiO—AlO—SiO-based crystallized glass according to claim 1 , containing claim 1 , in terms of % by mass claim 1 , 1.5 to 20% ZrOand over 0 to 10% MgO.5: The LiO—AlO—SiO-based crystallized glass according to claim 1 , further containing claim 1 , in terms of % by mass claim 1 , 0.10% or less FeO.6: The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of MgO/(LiO+MgO) is 0.0001 or more.7: The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of AlO/(SnO+ZrO) is 9 or less.8: The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of SnO/(SnO+ZrO+TiO+PO+BO) is 0.01 or more.9: The LiO—AlO—SiO-based crystallized glass according to claim 1 , wherein a mass ratio of ZrO/LiO is 0.4 or more.10: The LiO—AlO—SiO-based crystallized glass according to claim ...

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Номер записи: 92
17-03-2022 дата публикации

METHOD FOR ENGINEERED MESOPOROUS CELLULAR MAGMATICS AND ARTICLES THEREOF

Номер: US20220081349A1
Автор: Hust Robert Michael, Nielsen Gert, Wilkinson Collin James
Принадлежит:

Methods for engineered mesoporous cellular magmatics and articles thereof are disclosed. For example, the magmatics may include one or more infiltration materials that are configured not to sinter when a foamed mass is formed. The infiltration materials may be enclosed in cells of the foamed mass and may be floating and/or fixed to the cell walls. 1. An article of manufacture , comprising: a non-crystalline portion disposed such that the non-crystalline portion; and', 'a crystalline portion that is bound to the non-crystalline portion, in line with the definition of glass ceramics; and, 'a rigid foam mass being composed of at least one silicate based component and havinga vitreous material disposed within and enclosed by pores of at least a portion of at least one of the non-crystalline portion or the crystalline portion, the vitreous material having a melting temperature higher than the at least one silicate based component.2. The article of manufacture of claim 1 , wherein the vitreous material is a reactive material configured to cause a chemical reaction with a substance when the substance contacts the reactive material.3. The article of manufacture of claim 1 , wherein the vitreous material is a non-reactive material configured to avoid a chemical reaction with a substance when the substance contacts the non-reactive material but where the substance is involved in the chemical reaction with at least a portion of at least one of the non-crystalline portion or the crystalline portion.4. The article of manufacture of claim 1 , wherein the vitreous material includes a surface chemistry configured to resist incorporation of the vitreous material into a wall of the pores.5. An article of manufacture claim 1 , comprising: at least one of an amorphous portion or a crystalline portion bound to the amorphous portion; and', 'a vitreous material disposed within pores of at least a portion of the at least one of the amorphous portion or the crystalline portion, the vitreous ...

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Номер записи: 93
27-02-2020 дата публикации

TRANSLUCENT NANOCRYSTALLINE GLASS CERAMIC

Номер: US20200062638A1
Автор: Engqvist Hakan, FU Le, Xia Wei
Принадлежит:

The present invention provides a material composition and a process of producing translucent ZrO—SiOnanocrystalline glass ceramic (NCGC) with ultra-high flexural strength. The method comprises the following step: (1) prepare homogenous ZrO2-SiO2 nano-sized powder with high purity via a sol-gel method; (2) pressure assisted sintering of ZrO2-SiO2 nano-sized sol-gel powder to obtain translucent ZrO2-SiO2 NCGC. The invention also includes materials manufactured using the method. 1. A method for manufacturing translucent ZrO—SiOnanocrystalline glass ceramic , comprising the steps of:Providing a first solution by mixing a first precursor comprising silicon (IV), a solvent and an acidic aqueous solution, whereby the first precursor is hydrolyzed;Providing a second solution by mixing a second precursor comprising zirconium (IV) and a solvent;Combining the first and second solutions, wherein the molar ratio between Zr and Si in said solution ranges from 20:80 to 90: 10, preferably 60:40 to 80:20;Hydrolyzing and polymerizing the combined solution addition of an acidic aqueous solution to form a colloidal solution (or sol);Ageing the sol to form a clear sol;Polymerizing the clear sol by addition of an acidic aqueous solution;Ageing the clear sol to form a gel;Drying the gel to form a xerogel;Micronising of the xerogel to form a powder, and optionally including particle size selection;Calcining the powder, optionally with pre-compaction or compaction during the calcination process; andSintering the calcined powder, optionally with pre-compaction or compaction during the calcination process.2. The method according to claim 1 , wherein said first precursor is selected from the group consisting of tetraethyl orthosilicate claim 1 , ethyl silicate claim 1 , and silicon alkoxides.3. The method according to claim 1 , wherein said second precursor is selected from the group consisting of zirconium alkoxide claim 1 , such as zirconium(IV) propoxide or Zr(OPr) claim 1 , zirconyl ...

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Номер записи: 94
27-02-2020 дата публикации

COLORED AND OPAQUE GLASS CERAMIC(S), ASSOCIATED COLORABLE AND CERAMABLE GLASS(ES), AND ASSOCIATED PROCESS(ES)

Номер: US20200062640A1
Автор: Beall George Halsey, Dejneka Matthew John, Gomez Sinue, Smith Charlene Marie, Tietje Steven Alvin
Принадлежит:

Disclosed herein are glass-ceramics having crystalline phases including β-spodumene ss and either (i) pseudobrookite or (ii) vanadium or vanadium containing compounds so as to be colored and opaque glass-ceramics having coordinates, determined from total reflectance—specular included—measurements, in the CIELAB color space of the following ranges: L*=from about 20 to about 45; a*=from about −2 to about +2; and b*=from about −12 to about +1. Such CIELAB color space coordinates can be substantially uniform throughout the glass-ceramics. In each of the proceeding, β-quartz ss can be substantially absent from the crystalline phases. If present, β-quartz ss can be less than about 20 wt % or, alternatively, less than about 15 wt % of the crystalline phases. Also Further crystalline phases might include spinel ss (e.g., hercynite and/or gahnite-hercynite ss), rutile, magnesium zinc phosphate, or spinel ss (e.g., hercynite and/or gahnite-hercynite ss) and rutile. 115-. (canceled)16. A method of making a colorable and ceramable glass composition , comprising melting preselected amounts of ingredients having preselected compositions meltable to the colorable and ceramable glass , wherein the preselected compositions of the ingredients for the one or more colorants comprise any one of:{'sup': 2+', '3+', '2+', '3+, 'k. one or more compounds of iron comprising one or more Fe sources, one or more Fe sources, or one or more Fe sources and one or more Fe sources;'}l. one or more compounds of iron and one or more compounds of one or more additional transition metals, wherein the one or more additional transition metals comprises Co, Ni, Mn, Cr, Cu, or combinations thereof; i. the one or more multivalent metals comprise Bi, V, Sn, Ti, or combinations thereof; and', 'ii. the one or more compounds capable of reducing the one or more compounds including one of more components capable of reducing a valence or valences of at least a portion the one or more multivalent metals comprise ...

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Номер записи: 95
08-03-2018 дата публикации

METHOD OF MAKING POROUS MONO CORDIERTIE GLASS CERAMIC MATERIAL AND ITS USE

Номер: US20180065882A1
Автор: Al-Harbi Omar Assaf, Hamzawy Esmat Mahmoud
Принадлежит: King Abdulaziz City for Science and Technology (KACST)

A sintered porous cordierite-based glass-ceramic material is made using mainly three natural starting materials which are silica′ sand, kaolin clay and magnesite in addition to little boric acid is described. Upon melting at 1400-1450° C., this combination of raw materials and boric acid forms transparent brown glass which after solidification by quenching is then crushed and reduced to powder having a median particle size diameter less than 65 microns. This brown glass powder is consolidated, for example by compaction, to form a green body for sintering. Sintering of the green body at temperatures between about 1000° C. and 1300° C. in the period from 1 min to 60 min to produce porous cordierite glass-ceramic material containing a 56% porosity. The said material have density, microhardness and CTE suitable for use in various technical fields such as light insulation refractor material and in filter for vehicle exhaust. 1. A method of preparing a porous mono-cordierite glass-ceramic material , comprising:a) mixing and homogenizing a natural raw material, a mixture of oxide and a commercial material, wherein the natural raw material is a silica sand, kaolin and magnesite and the commercial material is a boric acid;b) Melting the homogenized the natural raw materials with boric acid at a temperature of from about 1400° C. to 1450° C. to form a glass frit material;c) crushing the frit glass material that is quenched to form a crushed glass powder having a particle size diameter of no greater than about 65 microns;d) consolidating the crushed glass powder into a green body;e) sintering the green body at a temperature of from about 1000° C. to 1300° C. for a specific time to devitrify and form a porous polycrystalline material; andf) cooling porous polycrystalline material to form a cordierite polycrystalline material.2. The method according to wherein said mixture of oxides has 0.50 wt % to 01.50 wt % of CaO; 0.01 wt % to 0.20 wt % of NaO claim 1 , 0.01 wt % to 0.20 wt ...

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Номер записи: 96
08-03-2018 дата публикации

GLASS PLATE

Номер: US20180066814A1
Автор: ARAI Yusuke, Hijiya Hiroyuki, Nakashima Tetsuya, WADA Naoya
Принадлежит: Asahi Glass Company, Limited

A glass plate, with a thickness θ of 1.0 mm or more, having first and second main surfaces and end surfaces, includes 1 to 80 weight ppm of iron in terms of FeOwith 0.1 to 10.0 weight ppm of Fe; and 0.1 to 10.0 weight ppm of Ni, Mn, Cr, Co and V in total. In a sample with a size of 50 mm×50 mm×8 obtained from the glass plate, and an arithmetic average roughness of the main surfaces and first and second cut surfaces being 0.1 μm or less, a first average absorbance coefficient for a wavelength of 400 to 700 nm measured on the first main surface in a normal direction is 0.009 or less, and a ratio of a second average absorbance coefficient measured on the first cut surface, to the first absorbance coefficient is 1.3 or less. 1. A glass plate , having a length of a side L of 200 mm or more and a thickness θ of 1.0 mm or more , provided with first and second main surfaces; and one end surface or a plurality of end surfaces connecting the main surfaces to each other , the glass plate comprising:{'sub': 2', '3', '2', '3, 'sup': '2+', '1 weight ppm to 80 weight ppm of iron in a total amount in terms of FeO, with 0.1 weight ppm to 10.0 weight ppm of Fe in terms of FeO; and'}0.1 weight ppm to 10.0 weight ppm of Ni, Mn, Cr, Co and V in total,wherein, in a sample “A”, obtained by cutting from a central portion of the glass plate in a direction orthogonal to the first main surface, with a size having a length of 50 mm, a width of 50 mm and a thickness of θ, the two main surfaces and first and second cut surfaces that face each other being set to have an arithmetic average roughness Ra of 0.1 μm or less,{'sub': 'ave1', 'a first average absorbance coefficient, α, for a wavelength within a range of 400 nm to 700 nm measured on the first main surface in a normal direction to the first main surface is 0.009 or less, and'}{'sub': ave2', 'ave1', 'ave2', 'ave1, 'a ratio of a second average absorbance coefficient, α, for a wavelength within a range of 400 nm to 700 nm measured on the ...

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Номер записи: 97
29-05-2014 дата публикации

SHEET OF FLOAT GLASS HAVING HIGH ENERGY TRANSMISSION

Номер: US20140147679A1
Автор: Dogimont Audrey, Fedullo Nicolas, Hennecker Sebastien
Принадлежит: AGC Glass Europe

The invention relates to a sheet of extra-clear glass, that is to say a sheet of glass having high energy transmission, which can be used in particular in the field of solar energy. More specifically, the invention relates to a sheet of float glass having a composition which comprises, in a content expressed as percentages of the total weight of glass: SiO60-75%; AlO: 0-10%; BO: 0-5%; CaO: 0-15%; MgO: 0-10%; NaO: 5-20%; KO: 0-10%; BaO: 0-5%; total iron (expressed as FeO): 0.001 to 0.06%; antimony (expressed as SbO): 0.02 to 0.07%. 2. The sheet of claim 1 , wherein the composition has a content expressed in percentage by total weight of glass of from 0.03 to 0.06% by weight of antimony (expressed as SbO).3. The sheet of claim 1 , wherein the composition has a content expressed in percentages by total weight of glass of from 0.001 to 0.02% by weight of total iron (expressed as FeO).4. The sheet of claim 1 , wherein the composition has a redox of from 0.01 to 0.4.5. The sheet of claim 1 , wherein the composition has a redox of from 0.1 to 0.3.6. The sheet of claim 1 , wherein the composition is free from cerium.7. The sheet of claim 1 , wherein the composition is free from arsenic.8. The sheet of claim 1 , it wherein the sheet has an energy transmission measured for a thickness of 4 mm (ET4) of at least 89%.9. The sheet of claim 1 , it wherein the sheet has an energy transmission measured for a thickness of 4 mm (ET4) of at least 90%.10. The sheet of claim 1 , wherein the sheet has an energy transmission measured for a thickness of 4 mm (ET4) of at least 91%.11. The sheet of claim 1 , wherein the sheet is coated with a thin transparent and electrically conductive layer.12. The sheet of claim 1 , wherein the sheet is coated with an antifouling layer.13. The sheet of claim 1 , wherein the sheet is coated with an antireflective layer.14. The sheet of claim 1 , wherein the sheet is coated with a mirror layer.15. A solar photovoltaic module or mirror claim 1 , comprising ...

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Номер записи: 98
11-03-2021 дата публикации

Electronic device with a cover assembly having an adhesion layer

Номер: US20210072789A1
Автор: Manish Mittal, Marta M. GIACHINO, Matthew S. Rogers, Sawako Kamei
Принадлежит: Apple Inc

A cover assembly for an electronic device has a cover member including a glass ceramic material. An adhesion layer couples an interior coating to the cover member. The adhesion layer includes an oxide-based layer, such as a silicon oxide-based layer, and a coupling agent.

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Номер записи: 99
05-06-2014 дата публикации

Process for producing a highly transparent impact-resistant glass ceramic

Номер: US20140150500A1
Автор: Schaupert Kurt, SCHIFFNER Ulrich, Siebers Friedrich, Zachau Thilo
Принадлежит:

The process for producing a transparent lithium aluminosilicate glass ceramic plate includes ceramicizing a green glass body of the LiO—AlO—SiOsystem using a ceramization program, which includes heating it, for the purpose of nucleation, to a temperature of 750° C.±20° C. and maintaining the temperature for 20±15 minutes, further heating the green glass body, for the purpose of ceramization, to a temperature of 900±20° C. and maintaining the to temperature for 20±15 minutes and then cooling to room temperature. The transparent plate has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C. and a brightness value observed at an angle of 2° of ≧80 for a -mm thick plate for transmitted normal light. 2. The process according to claim 1 , wherein said transparent plate has a thermal expansion coefficient (CTE) from −0.15×10/K to +0.15×10/K at 30 to 700° C.3. The process according to claim 2 , wherein said thermal expansion coefficient (CTE) is from −0.05×10/K to −0.10×10/K at 30 to 700° C.4. The process according to claim 1 , where said composition comprises from 40 to 130 ppm of said FeO.6. The process according to claim 1 , wherein the transparent plate has a brightness value for transmitted normal light observed at an angle of 2° of ≧80 for a plate thickness of 4 mm. This is a divisional of U.S. patent application Ser. No. 12/616,982, filed on Nov. 12, 2009, which claims priority of invention based on German Patent Application 10 2008 043 718.2 filed on Nov. 13, 2008 in Germany. The aforesaid German Patent Application contains subject matter described and claimed herein below.The inventions described herein comprise a transparent plate made of lithium aluminosilicate glass ceramic having a high transmission, a process for making same and also transparent plate laminates comprising at least one of the plates of the lithium aluminosilicate glass ceramic according to the invention and the use thereof as armored glass or in bullet-proof ...

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Номер записи: 100