Глазурь

Изобретение относится к составам глазурей, которые могут быть использованы для покрытия керамических изделий хозяйственно-бытового назначения, печных изразцов. Технический результат – повышение термостойкости глазури. Глазурь содержит, мас.%: SiO59,0-61,0; AlO9,0-11,0; MgO 12,0-13,0; CuO 1,0-1,5; KO 1,8-3,0; ZrO2,0-3,0; 3AlO⋅2SiO10,0-13,0. 1 табл.

МИНЕРАЛЬНОЕ ВОЛОКНО

Изобретение относится к производству теплоизоляционных материалов, а именно к составам для изготовления минерального волокна из силикатного расплава. Изобретение решает задачу увеличения долговечности минерального волокна и теплоизоляционных изделий на его основе. Минеральное волокно содержит при следующем соотношении компонентов, мас. %: SiO2 41,27 - 43,65, Al2O3 11,28 - 12,16, TiO2 1,30 - 1,40, Fe2O3 3,19 - 3,85, FeO 7,13 - 8,82, MnO 0,10 - 0,20, CaO 15,00 - 18,63, MgO 11,10 - 12,50, K2O 0,30 - 0,40, Na2O 2,50 - 3,50, SO3 0,05 - 0,10. 3 табл.

МНОГОСЛОЙНОЕ ОСТЕКЛЕНИЕ

Изобретение относится к области многослойных остеклений, конкретнее многослойным остеклениям автомобилей, в частности используемых как ветровые стекла или боковые стекла. Многослойное остекление содержит первый лист окрашенного стекла и второй лист бесцветного стекла, которые соединяются между собой посредством слоистой прослойки. Первый лист имеет толщину е1, находящуюся в диапазоне от 1,5 до 2,5 мм. Второй лист имеет толщину е2, находящуюся в диапазоне от 0,4 до 1,9 мм. Отношение R=е2/е12 составляет не более 0,40 мм-1. Остекление имеет светопропускание, по меньшей мере, 70% и прямое солнечное пропускание не более 55%. Окрашенное стекло имеет химический состав, включающий массовое содержание железа общего, выраженного в форме Fe2O3, находящееся в диапазоне от 1,1 до 2,0%, с редокс отношением, определяемым как отношение между массовым содержанием двухвалентного железа, выраженного в форме FeO, и массовым содержанием железа общего, выраженного в форме Fe2O3, изменяется от 0,23 до 0,32. Технический ...

ЛИСТОВОЕ СТЕКЛО (ВАРИАНТЫ) И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение имеет своим предметом листовое стекло, предпочтительно произведенное флоат-процессом, упрочненное поверхностным ионным обменом в течение длительного периода при температуре такой, что обменная глубина превышает 200 микрон для поверхностных сжимающих напряжений более 400 МПа и превышает 50 микрон для поверхностных сжимающих напряжений более 700 МПа, и матрица которого удовлетворяет одному из следующих составов, выраженных в мас. % SiO2 65-76, Al2O3 1,5-5, MgO 4-8, CaO до 4,5, Na2O 10-18, K2O 1-7, B2O3 до 4%, причем эти элементы представляют по меньшей мере 96% по весу от стекла и удовлетворяют, кроме того, соотношениям в мас.% 0 < CaO/CaO + MgO < 0,45 и 0,05 < K2 O/Na2O + K2O < 0,35. Стекло формуют на установке флоат-типа и обрабатывают калийным ионным обменом в течение более 72 часов при температуре 350-475oC. Изобретение обеспечивает получение стекол с большой толщиной упрочненного слоя. 4 с. и 10 з.п. ф-лы, 2 табл., 4 ил.

ЛИТИЙСОДЕРЖАЩЕЕ СТЕКЛО С ВЫСОКИМ СОДЕРЖАНИЕМ ОКИСЛИТЕЛЬНОГО ЖЕЛЕЗА И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Изобретение относится к литийсодержщим стеклам с высоким содержанием окисленного железа. Технический результат изобретения заключается в сокращении времени перехода от производственного цикла изготовления стекла с высоким поглощением в ИК-области к производственному цикла изготовления стекла с низким поглощением в ИК-области или наоборот. Стекло содержит следующие компоненты, % масс.: SiO60-63; NaO 10-12; LiO 4-5,5; AlO17-19; ZrO3,5-5; AlO+ZrO21,5-24; FeO 0,0005-0,015; FeO(общее железо) 50-1200 ч./млн и окислитель, выбранный из группы, включающей оксид церия в количестве более 0-0,50% масс., оксид марганца в количестве более 0-0,75% масс. и их смеси. Способ замены процесса изготовления стекла процесса изготовления литиевого стекла с высоким поглощением в инфракрасной области с содержанием FeO в количестве 0,02-0,04% масс. и редокс отношением в диапазоне 0,2-0,4 на процесс изготовления литиевого стекла с низким поглощением в инфракрасной области добавлением дополнительных окислителей - CeOи ...

СПОСОБ ПОЛУЧЕНИЯ СТРОНЦИЕВОГО АЛЮМОСИЛИКАТНОГО СТЕКЛА

Изобретение относится к области химической промышленности и может быть использовано в медицине, в частности в стоматологии. Технический результат предлагаемого способа заключается в ускорении технологического процесса за счет снижения времени плавления. Технический результат достигается тем, чтоспособ получения стронциевого алюмосиликатного стекла включает подготовку шихты путем усреднения компонентов, укладку шихты в корундовые тигли, плавление в электрической печи, выработку стекла и контроль качества, причем шихта включает кварцевое стекло, глинозем и карбонат стронция, в подготовку которой дополнительно входит раздельный помол компонентов до размера частиц 5-7 мкм и их механоактивацию, после чего осуществляют гранулирование усредненного состава шихты. 6 табл.

Стекло

Изобретение относится к технологии силикатов, в частности к производству стекол, которые могут быть использованы в производстве изделий декоративно-художественного назначения. Стекло содержит, мас.%: SiO13,2-19,2; AlO1,0-3,0; MgO 4,0-6,0; KO 17,0-19,0; NaO 0,5-1,5; AsO22,0-24,0; FeO2,5-3,0; ВО19,0-21,0; один компонент из группы СоО, NiO, MnO10,8-12,8. Технический результат - снижение температуры варки стекла. 1 табл.

ЛИТИЕВО-СИЛИКАТНЫЕ СТЕКЛА ИЛИ СТЕКЛОКЕРАМИКА, СПОСОБ ИХ ПОЛУЧЕНИЯ И ИХ ПРИМЕНЕНИЕ

... 1. Литиево-силикатные стекла или стеклокерамика, имеющие следующий состав:от 50 до 70 масс.% SiO,от 15 до 22 масс.% LiO,от 8 до 20 масс.% стабилизатора, выбранного из ZrOи/или HfO,от 0,1 до 4 масс.% KO и/или NaO,от 0,1 до 4 масс.% AlOиот 2 до 8 масс.% добавок.2. Стекла или стеклокерамика по п.1, имеющие следующий состав:от 50 до 64 масс.% SiO,от 17 до 20 масс.% LiO,от 8 до 20 масс.% стабилизатора, выбранного из ZrOи/или HfO,от 1 до 3 масс.% KO и/или NaO,от 1 до 3 масс.% AlOиот 4 до 6 масс.% добавок.3. Стекла или стеклокерамика по любому из пп.1 и 2, имеющие следующий состав:от 55 до 64 масс.% SiO,от 10 до 20 масс.% LiO,от 8 до 20 масс.% стабилизатора, выбранного из ZrOи/или HfO,от 0 до 5 масс.% KO и/или NaO,от 0,1 до 5 масс.% AlOиот 0 до 10 масс.% добавок.4. Стекла или стеклокерамика по любому из пп.1 и 2, имеющие следующий состав:от 55 до 60 масс.% SiO,от 10 до 20 масс.% LiO,от 8 до 20 масс.% стабилизатора, выбранного из ZrOи/или HfO,от 0 до 5 масс.% KO и/или NaO,от 0,1 до 5 масс.% AlOиот ...

Стекло

Стекло

Стекло

Стекло

Стекло

Стекло для химико-лабораторных изделий

Стекло

Стекло

Läutermittel für Silikatgläser

Silikatglas, wobei das Silikatglas eine Konzentration an Einschlüssen von weniger als 1 Einschluss/cm3 aufweist, wobei das Silikatglas enthält: 60 bis 70 Mol-% SiO2; 6 bis 14 Mol-% Al2O3; 0 bis 15 Mol-% B2O3; 0 bis 3,5 Mol-% Li2O; 0 bis 20 Mol-% Na2O; 0 bis 10 Mol-% K2O; 0 bis 2,5 Mol-% CaO; 0 bis 5 Mol-% ZrO2; 0 bis 1 Mol-% SnO2; 0 bis 1 Mol-% CeO2; und wobei 12 Mol-% Li2O + Na2O + K2O 20 Mol-% und wobei das Silikatglas weniger als 50 ppm As2O3 enthält.

Glaszusammensetzungen mit verbesserter chemischer und mechanischer Beständigkeit

Glaszusammensetzung, enthaltend: SiO2 in einer Konzentration von mehr als 74 Mol.-%, Erdalkalioxid, welches MgO und CaO enthält, wobei CaO in einer Menge von mehr als oder gleich 0,1 Mol.-% und weniger als oder gleich 1,0 Mol.-% enthalten ist und ein Verhältnis (CaO (Mol.-%)/(CaO (Mol.-%) + MgO (Mol.-%))) kleiner als oder gleich 0,5 ist, und Y Mol.-% Alkalioxid, wobei das Alkalioxid Na2O in einer Menge von mehr als 8 Mol.-% enthält, wobei die Glaszusammensetzung frei von Bor und Borverbindungen ist.

CHEMISCH HÄRTBARE, BORFREIE FLOAT-GLASZUSAMMENSETZUNGEN

ABDECKUNGSELEMENT UND TRAGBARES INFORMATIONSENDGERÄT

Die vorliegende Erfindung betrifft ein Abdeckungselement (1), das aus einem chemisch gehärteten Glas hergestellt ist, zum Schützen eines zu schützenden Gegenstands, wobei das Abdeckungselement (1) gekennzeichnet ist durch: Mindestens einen Vertiefungsteil (7), der auf mindestens einer ersten Hauptoberfläche (3) und einer zweiten Hauptoberfläche (5) des Abdeckungselements (1) bereitgestellt ist; wobei das Abdeckungselement (1) integriert einen dünnen Teil (13), der durch den Vertiefungsteil ausgebildet ist, und einen dicken Teil (17), der mit dem dünnen Teil (13) verbunden ist, umfasst; und, wenn eine Zugspannung als positiv und eine Druckspannung als negativ festgelegt ist, der integrierte Wert S für eine Hauptspannungsdifferenz in der Durchgangsdickenrichtung des dünnen Teils (13) an der Position des Schwerpunkts des dünnen Teils weniger als 0 MPa ist.

EINE GLASKOMPONENTE ENTHALTENDER ELEKTRISCHER BELEUCHTUNGSKÖRPER

TRANSPARENTE, MIT VANADIUMOXID-ZUSATZ DUNKEL EINFÄRBBARE GLASKERAMIK

Beschichtetes Glas- oder Glaskeramik-Substrat, Beschichtung umfassend geschlossene Poren sowie Verfahren zur Beschichtung eines Substrats

Die Erfindung betrifft allgemein beschichtete Glas- oder Glaskeramik- Substrate mit hoher Temperaturbeständigkeit, hoher Festigkeit und einem niedrigen thermischen Ausdehnungskoeffizienten. Weitere Aspekte der Erfindung betreffen eine Beschichtung, welche Poren umfasst und fluiddicht ausgebildet ist und geeignet ist für die Beschichtung eines temperaturbeständigen, hochfesten Glas- oder Glaskeramik-Substrats mit niedrigem thermischen Ausdehnungskoeffizienten sowie ein Verfahren zur eines solchen Substrats.

VERFAHREN ZUM HERSTELLEN EINES GLASARTIKELS

Die Erfindung betrifft ein Verfahren zum Herstellen eines Glasartikels mit hoher hydrolytischer Resistenz, bei dem zunächst ein Glasrohr aus einem Borosilikatglas mit einem AlO-Gehalt von unter 1 Gew.-% und einem ZrO-Gehalt von 2 - 12 Gew.-% und mit einer Glasübergangstemperatur Tzu einem Glasartikel umgeformt und anschließend einer thermischen Nachbehandlung unterzogen wird. Zur Verringerung der Alkaliabgabe eines durch ein solches Verfahren hergestellten Glasartikels ist vorgesehen, dass der Glasartikel bei der thermischen Nachbehandlung für eine Behandlungszeit t≥ 5 min einer Behandlungstemperatur T≥ T+ 5 K ausgesetzt ist und anschließend abgekühlt wird.

Glas sowie Verfahren zu seiner Herstellung und Verwendung desselben

Die Erfindung bezieht sich auf ein Glas, das floatbar, thermisch vorspannbar und in eine Glaskeramik mit Hochquarz-Mischkristallen oder Keatit-Mischkristallen umwandelbar ist. Um störende Oberflächeneffekte beim Floaten zu vermeiden und überlegene Eigenschaften des Glases bzw. der Glaskeramik insbesondere hinsichtlich eines kleinen Wärmeausdehnungskoeffizienten und hoher Lichttransmission zu erzielen, weist das Glas einen Gehalt von weniger als 300 ppb Pt, weniger als 30 ppb Rh, weniger als 1,5 Gew.-% ZnO und weniger als 1 Gew.-% SnO¶2¶ auf, ist bei der Schmelze ohne Verwendung der üblichen Läuterungsmittel Arsen- und/oder Antimonoxid geläutert und hat seine Formgebung durch Aufgießen auf ein flüssiges Metall in einer reduzierten Atmosphäre erhalten. DOLLAR A Die Erfindung betrifft neben dem floatbaren, thermisch vorspannbaren und in eine Glaskeramik mit Hochquarz-Mischkristallen oder Keatit-Mischkristallen umwandelbaren Glas ein Verfahren zu seiner Herstellung sowie Verwendungen des Glases ...

Dichtglas

Glass composition

A glass composition for fibres in reinforcing plastics materials consists essentially of in percentages by weight:-SiO2 42-56; B2O3 4-10; Al2O3 4-12; Na2O 4-13; K2O 0.5-4; CaO 3-10; MgO 0-5; BaO 5-14; ZnO 2-7; ZrO2 3-10 and CaF2 1-4. Impurities up to a total of 0.5 may be present, including Fe2O3; TiO2; Cr2O3; V2O5 P2O5.

Composite monolithic electronic component

GLASS COMPOSITION

... 1329633 Glass composition STANDARD TELEPHONES & CABLES Ltd 30 March 1972 [6 April 1971] 8832/71 Heading C1M A glass composition consists of 40-67 mole per cent SiO 2 , 12-27 mole per cent MnO, 5-20 mole per cent Na 2 O + K 2 O, 5-20 mole per cent CaO + MgO, and 0-3 mole per cent Al 2 O 3 , the composition not containing more than 40 mole per cent in aggregate of oxides, of manganese, calcium and magnesium. The glass composition preferably consists of 57-62 mole per cent SiO 2 , 12-18 mole per cent MnO, 15-17 mole per cent Na 2 O+K 2 O, 8-10 mole per cent CaO + MgO, and 0-1 mole per cent Al 2 O 3 . An electrically conductive layer can be produced in a piece of glass produced from the glass composition by heating it in air or oxygen at 500- 700‹ C. Surface resistivities in the range 106- 1014 ohms per square may be obtained. The conductivity is attributable to the oxidation of manganous ions to manganic ions.

IMPROVEMENTS IN OR RELATING TO THE MANUFACTURE OF CRYSTALLIZED GLASS

... 1,268,845. Crystallized glass. NIPPON ELECTRIC GLASS CO. Ltd. 9 July, 1969 [29 July, 1968], No. 34653/69. Heading C1M. Crystallized glass is made from a glass comprising (in weight per cent) to an extent of at least 90%; SiO 2 55-73; Al 2 O 3 15-35; Li 2 O 2-6; ZrO 2 1-4; TiO 2 0À5-3; F 0.01-4; by carrying out a primary heat treatment for 0À5-20 hours between the transformation and softening temperatures of the glass, and then carrying out a secondary treatment by heating up to 850-1200‹ C. #-Encryptite is converted to #-Spodumene in the interior of the glass while remaining unchanged on the surface. The primary heat treatment may be at 700-770‹ C. The glass may be maintained at 850-1200‹ C. for 0-8 hours. The linear expansion coefficient of the crystallized glass is 7-30 x 10-7/‹ C., while the maximum bending strength is 1500- 6000 kg./cm.2. The surface compressive #- Eucryptite layer may be 50-100 Á thick.

DELAY LINE

... 1329152 Delay lines OWENS-ILLINOIS Inc 17 Dec 1970 [22 Dec 1969] 59839/70 Heading H3U [Also in Division C1] An ultrasonic delay line have a glass delay line medium consisting of SiO 2 ; Al 2 O 3 and RO in the molar ratio 3À55-6À0 : 1 : 1, where R is at least one divalent metal. R may be any Cd, Pb or a mixture of Mg and Fe or Ba. Elastic waves are excited in the glass by the effect of an electric field on an A.C. cut quartz crystal.

Optical glass for optical paths

The present invention relates to an optical glass for an optical path, having a refractive index of at least 1.55, an Abbe number of at least 48 and a specific gravity of no greater than 2.90 and a good chemical durability, which glass has a chemical composition of: ...

ALKALI-RESISTANT GLASS FIBRE COMPOSITION

GLASS COMPOSITIONS

SPONTANEOUS OPAL GLASSES

GLASS COMPOSITIONS

... 1518875 Glass compositions PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 6 April 1976 [9 April 1975] 13864/76 Heading C1M A Li 2 O-free glass consists of (weight percent):- SiO 2 62-69 Na 2 O + K 2 O 14-17 BaO 9-14 SrO 0-2 Al 2 O 3 1-4 PbO less than 0À5 Sb 2 O 3 and/or As 2 O 3 0-0À8 F 0-1À5 ZrO 2 0-2, the weight ratio Na 2 O:K 2 O being 1À4-2À2:1. The glass may be used as an envelope or face-plate in a cathode ray tube (e.g. for a monochrome T.V. tube).

Objects out of ceramic glass and their manufactoring process.

VERFAHREN ZUM VERBINDEN VON KORPERN AUS SILIZIUMNITRID

A GLASS COMPONENT OF ABSTENTIONS OF ELECTRICAL LIGHTS

TRANSPARENT GLASS CERAMIC DYE-CASH WITH VANADIUM OXIDE ADDITIVE DARKNESS

FLOATED LITHIUM ALUMINOSILIKAT FLAT GLASS WITH HIGH TEMPERATURE STABILITY, WHICH IS CHEMICAL AND THERMAL INITIAL TENSION BAR

ORTHODONTI BRACKET FROM GLASS.

Glass for pistons of television rendition electron beam tubes

Procedure for the production of with a glaze or an enamel covered glass articles

GLASS COMPOSITION FLUORESCENT IN INFRARED WAVELENGTH REGION

LOW-PRESSURE MERCURY VAPOR DISCHARGE LAMP

GLASS COMPOSITIONS WITH IMPROVED CHEMICAL AND MECHANICAL DURABILITY

A glass composition comprising: from about 70 mol.% to about 80 mol.% SiO2; from about 4 mol.% to about 8 mol.% alkaline earth oxide, the alkaline earth oxide comprising CaO and from about 3 mol.% to about 7 mol.% MgO; X mol.% A120 3 , wherein X is from about 5 to about 7; and Y mol.% alkali oxide, wherein the alkali oxide comprises Na20 in an amount greater than 8 mol.%, and the glass composition is free of boron and compounds of boron.

Method of manufacturing high strength glass fibers in a direct melt operation and products formed there from

A method of forming high strength glass fibers in a glass melter substantially free of platinum or other noble metal materials, products made there from and batch compositions suited for use in the method are disclosed. One glass composition for use in the present invention includes 50-75 weight % SiO2, 13-30 weight % Al2O3, 5-20 weight % MgO, 0- 10 weight % CaO, 0 to 5 weight % RO where RO is the sum Of LiO, NaO and KO, has a higher fiberizing temperature, e.g. 2400 - 2900° F (1316 - 1593 ° C) and/or a liquidus temperature that is below the fiberizing temperature by as little as 45 ° F (25° C). Another glass composition for use in the method of the present invention is up to about 64-75 weight percent SiO, 16-24 weight percent AlO, 8-12 weight percent MgO and 0.25-3 weight percent RO, where RO equals the sum Of LiO, NaO and KO, has a fiberizing temperature less than about 2650° F (1454 ° C), and a T of at least 80° F (45 ° C). A forehearth (12) for transporting molten glass from the glass ...

Glass compositions with improved chemical and mechanical durability

The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol.% to about 80 mol.% SiO ...

Coated metal element used for producing glass

GLASS/CERAMIC SEALING SYSTEM

PHOTOSENSITIVE COLORED GLASSES EXHIBITING ALTERABLE PHOTO-ANISOTROPIC EFFECTS

This invention is concerned with hydrated glass articles having base compositions within the Na2O and/or K2O-ZnO-Al2O3-SiO2-Cl field and having at least a surface layer thereon containing Ag-AgCl crystals which impart photoanisotropic effects to the glass articles. Silver ions are introduced into the surface layer through a solution ion exchange process with sodium and/or potassium ions of the parent glass. The silver remains in the ionic state until exposure to ultraviolet radiation which results in the development of silver-containing aggregates, i.e., Ag-AgCl, via a photolytic reaction. The aggregates contribute to photo-anisotropic absorption bands which are centered around 340 nm and 700 nm. Polarization of the photo-dichroic and photo-birefringent effects of the inventive products can be altered reversibly between two arbitrary directions without fatigue. The photo-anisotropic image can be read cyclically essentially indefinitely without destruction. The product of the invention is ...

STRONTIUM ALUMINOSILICATE GLASS SUBSTRATES FOR FLAT PANEL DISPLAY DEVICES

HIGH-MODULUS GLASS FIBER COMPOSITION, GLASS FIBER AND COMPOSITE MATERIAL THEREFROM

A high modulus glass fibre composition, and a glass fibre and a composite material thereof. The content, given in weight percentage, of each component of the glass fibre composition is as follows: 55.7-58.9% of SiO2, 15-19.9% of Al2O3, 0.1-4.3% of Y2O3, less than or equal to 1.5% of La2O3, less than or equal to 1.2% of CeO2, 6-10% of CaO, 9.05-9.95% of MgO, less than or equal to 2% of SrO, less than or equal to 0.99% of Li2O + Na2O + K2O, less than or equal to 0.65% of Li2O, less than 1% of Fe2O3, and 0.1-1.5% of TiO2, and the range of a weight percentage ratio C1 is more than 0.6, wherein C1 = Y2O3 / (Y2O3 + La2O3 + CeO2). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate and the bubble rate of glass. The composition is particularly suitable for the tank furnace production of a high modulus glass fibre having ...

THIN FILM RESISTIVE BODY AND PRODUCTION METHOD FOR SAME

The purpose of the present invention is to provide a thin film resistive body that has the harmful lead component eliminated from a conductive component and a glass thereof and that, with respect to characteristics such as TCR characteristics, current noise characteristics, voltage withstand characteristics, and having a wide range of resistance values, is provided with equivalent or superior characteristics as compared to conventional thin film resistive bodies. The present invention is a thin film resistive body that comprises a fired object of a resistive composition. The thin film resistive body includes ruthenium conductive particles that include ruthenium dioxide and includes a glass component that does not substantially include a lead component. The thin film resistive body also has resistance values in the range of 100 O/? to 10 MO/? and has a temperature coefficient of resistance of ±100 ppm/? or lower.

MAN-MADE VITREOUS FIBRES

The invention provides a method of manufacture of man-made vitreous fibres (MMVF) comprising: providing a fiberising apparatus, wherein the fiberising apparatus comprises: a set of at least three rotors each mounted for rotation about a different substantially horizontal axis; wherein each rotor has a driving means; rotating the rotors; wherein the first rotor rotates to give an acceleration field of from 25 to 60 km/s2 and the second and third rotors each rotate to give an acceleration field of at least 125 km/s2, providing a mineral melt, wherein the melt has a composition comprising the following, expressed by wt of oxides: SiO2 in an amount of from 33 to 45 wt%, Al2O3 in an amount of from 16 to 24 wt%, an amount of K2O and/or Na2O, an amount of CaO and/or MgO, wherein the ratio of the amount of Al2O3 to the amount of SiO2 is in the range 0.34-0.73, wherein the ratio of the total amount of K2O and Na2O, to the total amount of CaO and MgO, is less than 1; pouring the melt on to the periphery ...

COMPOSITE ELEMENT AND USE THEREOF

The present invention relates to a lightweight composite pane, which comprises a mineral glass or glass ceramic pane and an organic layer. The weight per unit area of the lightweight composite pane is in the range from 0.5 kg/m2 to 5.5 kg/m2, the ratio of the thickness of the mineral glass pane to the thickness of the organic layer is 1:0.01 to 1:1 and the thickness of the organic layer is less than or equal to 500 µm. The lightweight composite pane meets the thermal safety requirements of aerospace authorities and has a "Total Heat Release", measured in compliance with JAR/FAR/CS 25, App. F, Part IV & AITM 2.0006, of less than 65 kW x min./m2 and an afterburn time after removal of the flame in the "Vertical Bunsen Burner Test", measured in compliance with FAR/JAR/CS 25, App. F, Part I & AITM 2.0002A, of less than 15 seconds. The invention also relates to a lightweight window pane, in particular an internal aircraft window pane, and a smoke barrier element.

METHOD OF MANUFACTURING HIGH STRENGTH GLASS FIBERS IN A DIRECT MELT OPERATION AND PRODUCTS FORMED THERE FROM

A process for producing glass fibers comprises charging raw glass batch to a melting zone; heating the batch to form a fiberizable molten glass; and fiberizing the molten glass to produce glass fibers having a strength of greater than about 700 KPsi and a density <= 2.486 g/cc. The batch comprises 64-75 wt% SiO2; 16-26 wt% Al2O3; <= 2.0 wt.% CaO; 8-12 wt% MgO; and 0-3 wt% R2O (=sum of Li2O, Na2O and K2O). In another process, a glass batch comprising 68-69 wt% SiO2; 20-22 wt% Al2O3; <= 2.0 wt.% CaO; 9-10 wt% MgO; and 1-3 wt% Li2O is melted to form a fiberizable molten glass. In a further process, a glass batch comprising 64-75 wt SiO2; 16-24 wt% Al2O3; <=2.0 wt.% CaO; 8-12 wt% MgO; and 0.25-3 wt% R2O (=sum of Li2O, Na2O and K2O) is heated and fiberized. Articles formed from the produced glass fibers are also provided.

GLASS COMPOSITION FOR THE MANUFACTURE OF FIBERS AND PROCESS

Improved glass batch compositions and processes of fiberizing the compositions to form fibers are provided. The batch of the present composition can include: 40 - 60 wt% Si02; 15 - 50 wt% A1203; 0 - 30 wt% MgO; 0 - 25 wt% CaO; 0 - 5 wt% Li20; 0 - 9 wt% B203; and 0 - 5 wt% Na20. The fibers formed of the compositions may have a Young's modulus of greater than 82.7 GPa (12 MPSI). The fibers may also have good biosolubility (kdis), of at least 100 ng/cm2/hour.

ELECTRIC LAMP WITH LEAD FREE GLASS

An electric lamp having a light source, glass envelope made of a lead free glass, electric leads, and contacts, is disclosed. The compositional range of the envelope glass may be used in existing lamp manufacturing equipment, and otherwise substantially meets the manufacturing and product requirements normally met only by lead glass. The resulting lamp product has the same cost, and product performance, but now has the environmentally desirable feature of being lead free.

Verfahren zum Herstellen zusammengesetzter, mindestens eine Verbindung zwischen Metall und einem glasartigen Teil enthaltender Körper

Procédé de fabrication d'un objet en céramique semicristalline

Verfahren zum Herstellen von Glasgegenständen mit erhöhter mechanischer Festigkeit

Glas und seine Verwendung

Glasgegenstand

Glas mit einem hohen Absorptionskoeffizienten für Infrarot-Strahlung

Durchsichtige Glaskeramik von geringer Wärmeausdehnung und Verfahren zu deren Herstellung

Chemically curable watch glass of high Knoop hardness

Lighting device with extended useful spectrum.

Die Erfindung betrifft eine Beleuchtungseinrichtung (1) zum Bestrahlen von Objekten mit elektromagnetischer Strahlung (4), umfassend zumindest einen Lichtleiter (2) und eine Strahlungsquelle (10), die elektromagnetische Strahlung (4) insbes. im Spektralbereich von 320 nm bis 420 nm in den Lichtleiter (2) emittiert. Der Lichtleiter (2) wird aus einem Glas gebildet, das einen spektralen Transmissionsgrad bei 350 nm von mindestens 70% aufweist und ausgewählt ist aus dem System der bleifreien Silikat-Zinn-Gläser. Die Erfindung betrifft ebenfalls die Verwendung der erfindungsgemässen Beleuchtungseinrichtung (1), insbesondere in der Zahnheilkunde, bei der Krebsdiagnose und in Endoskopen.

Illumination device with extended utilizable spectrum.

Die Erfindung betrifft eine Beleuchtungseinrichtung (1) zum Bestrahlen von Objekten mit elektromagnetischer Strahlung (4), umfassend zumindest einen Lichtleiter (2) und eine Strahlungsquelle (10), die elektromagnetische Strahlung (4), insbesondere im Spektralbereich von 320 nm bis 420 nm, in den Lichtleiter (2) emittiert. Der Lichtleiter (2) wird aus einem Glas gebildet, das einen spektralen Transmissionsgrad bei 350 nm von mindestens 70% aufweist und ausgewählt ist aus dem System der bleifreien Silikat-Zinn-Gläser. Die Erfindung betrifft ebenfalls die Verwendung der Erfindungsgemässen Beleuchtungseinrichtung (1), insbesondere in der Zahnheilkunde, bei der Krebsdiagnose und in Endoskopen.

Röntgenopakes barium-free glass and its use.

Die Erfindung betrifft ein zirkonhaltiges BaO- und PbO-freies röntgenopakes Glas mit einem Brechungsindex n d von 1,54 bis 1,58 und einer hohen Röntgenopazität mit einer Aluminiumgleichwertdicke von mindestens 500%. Das Glas basiert auf dem System SiO 2 B 2 O 3 Al 2 O 3 R 2 O RO La 2 O 3 ZrO 2 mit optionalen Zusätzen von SnO 2 . Das Glas kann insbesondere als Dentalglas oder als optisches Glas eingesetzt werden.

Radiopaque barium-free glass and its use.

Die Erfindung betrifft ein zirkonhaltiges BaO- und PbO-freies röntgenopakes Glas mit einem Brechungsindex n d von 1,54 bis 1,58 und einer hohen Röntgenopazität mit einer Aluminiumgleichwertdicke von mindestens 500%. Das Glas basiert auf dem System SiO 2 B 2 O 3 Al 2 O 3 R 2 O RO La 2 O 3 ZrO 2 mit optionalen Zusätzen von SnO 2 . Das Glas kann insbesondere als Dentalglas oder als optisches Glas eingesetzt werden.

CENTRAL CANTILEVER FOR VEHICLE

LAMINATED GLAZING ELEMENT FOR PROTECTION FROM SUN

GLASS SHEET AND DEVICE, CONTAINING SAID GLASS SHEET

Glasses for substrate for magnetic recording medium, substrates for magnetic recording medium, magnetic recording media, and processes for producing these

The provided are a glass for a magnetic recording medium substrate permitting the realization of a magnetic recording medium substrate affording good chemical durability and having an extremely flat surface, a magnetic recording medium substrate comprised of this glass, a magnetic recording medium equipped with this substrate, and methods of manufacturing the same. Glasses for a magnetic recording medium substrate are, glass I comprised of an oxide glass, comprising, denoted as mass percentages: Si 20 to 40 percent, Al 0.1 to 10 percent, Li 0.1 to 5 percent, Na 0.1 to 10 percent, K 0 to 5 percent (where the total content of Li, Na, and K is 15 percent or less), Sn 0.005 to 0.6 percent, and Ce 0 to 1.2 percent,the Sb content is 0 to 0.1 percent,and not comprising As or F,glass II comprised of oxide glass, comprising, as converted based on the oxide, denoted as molar percentages: SiO 2 60 to 75 percent, Al 2 O 3 1 to 15 percent, Li 2 O 0.1 to 20 percent, Na 2 O 0.1 to 15 percent, and K 2 ...

UV blocking for improved transmission glasses

Aluminosilicate glass for flat panel display

Reinforced glass substrate

A cover glass products

... 种盖板玻璃制品包括具有三维形状、内侧表面和外侧表面的玻璃主体。所述内侧表面和外侧表面各自具有小于1纳米的表面粗糙度(R)，且不含直径大于150微米的压痕。 ...

Filler powder and its manufacturing method

DEVICE OF COOKING BY INDUCTION

L'invention a pour objet un dispositif de cuisson par induction comprenant au moins un inducteur disposé sous une plaque en verre renforcé thermiquement ou chimiquement, la composition du verre étant du type aluminosilicate de lithium.

New compositions of glasses having a raised chemical stability and excellent characteristics of work

High-strength glass fibres

Manufactoring process of objects out of glass with great mechanical resistance

Composition, useful as glass substrate, comprises silicon dioxide, aluminum oxide, boric oxide, calcium oxide, potassium oxide, sodium oxide, potassium oxide and sodium oxide, zirconium oxide, fluorine, and magnesium oxide

La présente invention concerne des compositions de verre aptes à subir un traitement d'échange ionique par des ions thallium qui présentent une résistance hydrolytique élevée. Elle concerne aussi les substrats obtenus à partir de ces compositions de verre, notamment qui comportent au moins un guide d'onde intégré ou au moins une lentille GRIN.

VERRES SANS PLOMB A FORTE ABSORPTION DE RAYONS X POUR TUBES A RAYONS CATHODIQUES

VERRE PRATIQUEMENT EXEMPT DE PBO OU AUTRES OXYDES METALLIQUES AISEMENT REDUCTIBLES ET PRESENTANT UNE RESISTIVITE ELECTRIQUE, MESUREE A 350C, D'AU MOINS 10 OHMS-CM, UN COEFFICIENT DE DILATATION THERMIQUE (0-300C) NE DEPASSANT PAS 10210C, UN LIQUIDUS INTERNE INFERIEUR A 900C, UN POINT DE TENSION NE DEPASSANT PAS 500C, UN POINT DE RAMOLLISSEMENT NE DEPASSANT PAS 690C, UN COEFFICIENT LINERAIRE D'ABSORPTION DES RAYONS X A 0,6 A D'AU MOINS 35 CM ET UNE FORTE RESISTANCE A L'ALTERATION DE TEINTE SOUS BOMBARDEMENT PAR RAYONS X ET ELECTRONS. CE VERRE COMPREND: SIO 43 A 45, ALO 0 A 4, ZNO 5 A 12, LI 0,5 A 3, NAO 4 A 8, KO 3 A 8, LIO NAO KO 10 A 18, CAO 0 A 5, SRO 2 A 14, BAO 10 A 20, CAO SRO BAO 16 A 30, CEO 0,3 A 1, ZRO 2 A 8, LES CHIFFRES CI-DESSUS ETANT DES POURCENTAGES EN POIDS. APPLICATION AUX TUBES-IMAGES DE TELEVISION.

METHOD OF STRENGTHENING A GLASS ARTICLE AND A STRENGTHENED GLASS ARTICLE

Bulbs for lamps with iodine

VITROCERAMICS OF BLUE BETA-QUARTZ, ARTICLES IN THE AFOREMENTIONED VITROCERAMICS; MANUFACTORING PROCESS

COMPOSITION OF GLASS AND SUBSTRATE OUT OF GLASS SOAKS CHEMICALLY

Glass compositions with very high mechanical strength and temperature

CERAMICS OF QUARTZ-BETA WITH CONTROLLED TRANSMISSION CURVE AND HIGH IRON OXIDE CONTENT; SAID GLASS-CERAMIC ARTICLES, PRECURSOR GLASSES

ROUNDED AND HALOGEN LAMP WITH SPIRAL EXHAUST TUBE AND METHOD OF MANUFACTURE

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

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.

Fining agents for silicate glasses

A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at least one multivalent metal oxide and, optionally, an oxidizer. A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm 3 is also provided. Methods of reducing the seed concentration of a silicate glass, and a method of making a silicate glass having a seed concentration of less than about 1 seed/cm 3 are also described.

Tempered glass substrate and method of producing the same

A tempered glass substrate of the present invention is a tempered glass substrate, which has a compression stress layer on a surface thereof, and has a glass composition comprising, in terms of mass %, 40 to 71% of SiO 2 , 3 to 21% of Al 2 O 3 , 0 to 3.5% of Li 2 O, 7 to 20% of Na 2 O, and 0 to 15% of K 2 O.

Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied

Disclosed are a glass substrate for an information recording medium, having excellent scratch resistance and a light weight and having high fracture toughness, the glass substrate having a fragility index value, measured in water, of 12 μm −1/2 or less or having a fragility index value, measured in an atmosphere having a dew point of −5° C. or lower, of 7 μm −1/2 or less, or the glass substrate comprising, by mol %, 40 to 75% of SiO 2 , 2 to 45% of B 2 O 3 and/or Al 2 O 3 and 0 to 40% of R′ 2 O in which R′ is at least one member selected from the group consisting of Li, Na and K), wherein the total content of SiO 2 , B 2 O 3 , Al 2 O 3 and R′ 2 O is at least 90 mol %, and a magnetic information recording medium comprising a magnetic recording layer formed on the glass substrate.

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

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 .

GLASS PLATE

Provided is a glass sheet, comprising, as a glass composition in terms of mass %, 40 to 80% of SiO, 0 to 30% of AlO, 0 to 15% of BO, 0 to 25% of an alkali metal oxide (one kind or two or more kinds of LiO, NaO, and KO), and 0 to 15% of an alkaline earth metal oxide (one kind or two or more kinds of MgO, CaO, SrO, and BaO), and being used as a viewing zone control member for covering partially or wholly a two-dimensional display. 1. A glass sheet , comprising , as a glass composition in terms of mass % , 40 to 80% of SiO , 0 to 30% of AlO , 0 to 15% of BO , 0 to 25% of an alkali metal oxide , and 0 to 15% of an alkaline earth metal oxide , and being used as a viewing zone control member for covering at least partially a two-dimensional display.2. The glass sheet according to claim 1 , wherein the glass sheet has a convex/concave portion in at least one surface.3. The glass sheet according to claim 2 , wherein the convex/concave portion has an Rsm of 10 to 500 μm.4. The glass sheet according to claim 1 , wherein claim 1 , when the glass sheet is subjected to processing at a feed rate of 10 mm/min at a feed per revolution of 0.015 mm by using a #200 electric drill with a diameter of 1.4 mm claim 1 , a size of a chipping produced is less than 500 μm.5. The glass sheet according to claim 1 , wherein the glass sheet has a total light transmittance of 89% or more at a thickness of 1 mm and a wavelength of 400 to 700 nm.6. The glass sheet according to claim 1 , wherein the glass sheet has a compression stress layer in its surface.7. The glass sheet according to claim 6 , wherein a compression stress value of the compression stress layer is 100 MPa or more.8. The glass sheet according to claim 6 , wherein a depth of the compression stress layer is 20 μm or more.9. The glass sheet according to claim 1 , wherein the glass sheet has a liquidus temperature of 1 claim 1 ,200° C. or less.10. The glass sheet according to claim 1 , wherein the glass sheet has a liquidus viscosity ...

Glass composition for producing high strength and high modulus fibers

A glass composition including SiO 2 in an amount from about 69.5 to about 80.0% by weight, Al 2 O 3 in an amount from about 5.0 to about 18.5% by weight, MgO in an amount from about 5.0 to about 14.75% by weight, CaO in an amount from 0.0 to about 3.0% by weight, Li 2 O in an amount from about 3.25 to about 4.0% by weight, and Na20 in an amount from 0.0 to about 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include, but are not limited to, woven fabrics for use in forming wind blades, armor plating, and aerospace structures.

Colored glass housing

There is provided a colored glass housing having characteristics suitable for a housing of an electronic device, that is, a light blocking property, high strength, and superior manufacturing cost. The colored glass housing includes glass whose absorbance at wavelength from 380 nm to 780 nm is 0.7 or more, suitably, whose absorption constant is 1 mm −1 or more, and is provided on an exterior of the electronic device. In order to obtain the above glass, it is preferable that, as a coloring component in the glass, at least one component selected from a group consisting of oxides of Co, Mn, Fe, Ni, Cu, Cr, V, and Bi amounting to 0.1% to 7% in terms of molar percentage on an oxide basis.

COVER GLASS FOR SEMICONDUCTOR PACKAGE AND PRODUCTION METHOD THEREOF

A cover glass for semiconductor package having thermal expansion coefficient conformable to plastic packages and allowing accurate detection of existence of foreign substances, dusts, etc. in an imaging test always having a low emission amount of alpha-ray, and a related production method. The cover glass comprises, in terms of percentage by mass, of from 58 to 75% of SiO, of from 1.1 to 20% of AlO, of from 0 to 10% of BO, of from 0.1 to 20% of NaO, of from 0 to 11% of KO, and of from 0 to 20% of alkaline earth metal oxide. The cover glass has average thermal expansion coefficient of from 90 to 180×10/° C. in the temperature range of from 30 to 380° C., a Young's modulus of 68 GPa or more, and an emission amount of alpha-ray from the glass of 0.05 c/cm·hr or less. 1. A cover glass for semiconductor package , comprising , in terms of percentage by mass , from 58 to 75% of SiO , from 1.1 to 20% of AlO , from 0 to 10% of BO , from 0.1 to 20% of NaO , from 0 to 11% of KO , and from 0 to 20% of alkaline earth metal oxides , wherein the cover glass has an average thermal expansion coefficient of from 90 to 180×10/° C. in the temperature range of from 30 to 380° C. , a Young's modulus of 68 GPa or more , and an emission amount of alpha-ray from the glass of 0.05 c/cm·hr or less.2. The cover glass for semiconductor package according to claim 1 , wherein the cover glass has a U content of 100 ppb or less and a Th content of 200 ppb or less.3. The cover glass for semiconductor package according to claim 1 , wherein the cover glass does not substantially contain ZrO claim 1 , AsO claim 1 , and BaO.4. The cover glass for semiconductor package according to claim 1 , wherein the cover glass comprises a total amount of alkali metal oxides and alkaline earth metal oxides of from 21 to 35% by mass.5. The cover glass for semiconductor package according to claim 1 , wherein the viscosity of the cover glass at the liquidus temperature is 10dPa·s or more.6. The cover glass for ...

Beta-quartz glass ceramics and related precursor glasses

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.

Glass substrate and its production process

This invention relates to a glass substrate having a high glass transition temperature, a thermal expansion coefficient near that of soda-lime glass, and a low specific gravity, which is not prone to yellowing, and which also has good solubility and high productivity. The glass substrate has a composition in mass % in terms of oxide amount which is SiO 2 : 55-65%, Al 2 O 3 : 4-8%, MgO: 6-9%, CaO: 0.1-5%, SrO: 0.5-6%, BaO: 0-2%, MgO+CaO+SrO+BaO: 6.6-19%, Na 2 O: 0-5%, K 2 O: 9.5-21%, Na 2 O+K 2 O: 10-22%, ZrO 2 : 0.5-5%, and Fe 2 O 3 : 0.06-0.15%, has a specific gravity of 2.7 or less, an average thermal expansion coefficient at 50-350° C. of 80×10 −7 /° C. to 90×10 −7 /° C., and a glass transition temperature of at least 640° C., wherein, defining η as viscosity, the temperature satisfying log η=2 is at most 1550° C., and the yellow coloring b* of the glass surface is at most 8.

GLASS PLATE FOR DISPLAY DEVICE, PLATE GLASS FOR DISPLAY DEVICE AND PRODUCTION PROCESS THEREOF

A process for producing a plate glass for a display device having a thickness of at most 1.5 mm by a float process, wherein the plate glass comprises, as represented by mole percentage based on the following oxides, from 67 to 75% of SiO2, from 0 to 4% of Al2O3, from 7 to 15% of Na2O, from 1 to 9% of K2O, from 6 to 14% of MgO and from 0 to 1.5% of ZrO2, has a total content of SiO2 and Al2O3 of from 71 to 75%, has a total content Na2O+K2O of Na2O and K2O of from 12 to 20%, and has a content of CaO of less than 1% if contained. 1. A display device , comprising:a display, anda cover glass,wherein the cover glass has a thickness of at most 1 mm; [{'sub': '2', 'from 67 to 75% of SiO,'}, {'sub': 2', '3, 'from 0 to 4% of AlO,'}, {'sub': '2', 'from 7 to 15% of NaO,'}, {'sub': '2', 'from 1 to 9% of KO,'}, 'from 6 to 14% of MgO, and', {'sub': '2', 'from 0 to 1.5% of ZrO,'}], 'the cover glass comprises, by mole percentage based on the following oxides{'sub': 2', '2', '3, 'a total content of SiOand AlOin the cover glass is from 71 to 75%;'}{'sub': 2', '2', '2', '2, 'a total content NaO+KO of NaO and KO in the cover glass is from 12 to 20%; and'}a content in the cover glass of CaO, if present, is less than 1%.2. The display device according to claim 1 , wherein a SiOcontent of the cover glass is from 69 to 74 mol %.3. The display device according to claim 1 , wherein an AlOcontent of the cover glass is at least 0 mol % and less than 3 mol %.4. The display device according to claim 1 , wherein a MgO content of the cover glass is from 8 to 13 mol %.5. The display device according to claim 1 , wherein the total content NaO+KO of the cover glass is higher than 13.5%.6. The display device according to claim 1 ,{'sub': '2', 'wherein the cover glass comprises CaO, SrO, BaO, ZrO, or any combination thereof, and'}{'sub': '2', 'a total content of CaO, SrO, BaO, and ZrOis less than 1.5%.'}7. The display device according to claim 1 , wherein a content in the cover glass of BO claim 1 , if ...

ALUMINOSILICATE GLASS FOR TOUCH SCREEN

An aluminosilicate glass for touch screens is provided. The glass includes, calculated based on weight percentage: SiO, 55 to 65%; NaO, 12 to 17%; AlO, 15 to 20%; KO, 2 to 6%; MgO, 3.9 to 10%; ZrO, 0 to 5%; ZnO, 0 to 4%; CaO, 0 to 4%; NaO+KO+MgO+ZnO+CaO, 15 to 28%; SnO, 0 to 1%; TiO+CeO, ≦1%. A chemical strengthening method for glass also provided that includes ion exchange strengthening in a 100% KNOsalt bath, wherein a preheating temperature ranges from 370° C. to 430° C. and the treatment time is from 0.5 to 16 hours. 174-. (canceled)76. The aluminosilicate glass according to claim 75 , wherein SiOhas an amount of 58 to 63 wt %.77. The aluminosilicate glass according to claim 75 , wherein NaO has an amount of greater than 12 to 15 wt %.78. The aluminosilicate glass according to claim 75 , wherein KO has an amount of 3 to 5 wt %.79. The aluminosilicate glass according to claim 75 , wherein AlOhas an amount of greater than 15 to 17 wt %.80. The aluminosilicate glass according to claim 75 , wherein MgO has an amount of 3.9 to 8.0 wt %.81. The aluminosilicate glass according to claim 75 , wherein ZnO and CaO each have an amount of lower than 2 wt %.82. The aluminosilicate glass according to claim 75 , wherein ZrOhas an amount of 0.1 to 3 wt %.83. The aluminosilicate glass according to claim 75 , wherein the sum of the amounts of components NaO+KO+MgO+ZnO+CaO is 15 to 25 wt %.84. The aluminosilicate glass according to claim 75 , wherein the aluminosilicate glass has been subjected to ion exchange strengthening in a 100% KNOsalt bath for a period of time from 0.5 to 16 hours after preheating to a temperature from 370° C. to 430° C.85. The aluminosilicate glass according to claim 84 , wherein the temperature ranges from 390 to 410° C. and the treatment time ranges from 1 to 3 hours.86. The aluminosilicate glass according to claim 84 , wherein claim 84 , after ion exchange claim 84 , the aluminosilicate glass has a compressive stress of 600 to 1000 MPa.87. The ...

GLASS FOR CHEMICAL TEMPERING, CHEMICALLY TEMPERED GLASS, AND GLASS PLATE FOR DISPLAY DEVICE

To provide glass to be used for chemically tempered glass, of which the strength is less likely to be reduced even when indentations are formed thereon. Glass for chemical tempering, which comprises, as represented by mole percentage based on oxides, from 62 to 68% of SiO, from 6 to 12% of AlO, from 7 to 13% of MgO, from 9 to 17% of NaO, and from 0 to 7% of KO, wherein the difference obtained by subtracting the content of AlOfrom the total content of NaO and KO is less than 10%, and when ZrOis contained, its content is at most 0.8%. Chemically tempered glass obtained by chemically tempering such glass for chemical tempering. Such chemically tempered glass has a compressive stress layer formed on the glass surface, which has a thickness of at least 30 μm and a surface compressive stress of at least 550 MPa. 1. Glass for chemical tempering , which comprises , as represented by mole percentage based on oxides , from 62 to 68% of SiO , from 6 to 12% of AlO , from 7 to 13% of MgO , from 9 to 17% of NaO , and from 0 to 7% of KO , wherein the difference obtained by subtracting the content of AlOfrom the total content of NaO and KO is less than 10% , and when ZrOis contained , its content is at most 0.8%.2. The glass for chemical tempering according to claim 1 , which contains from 64 to 67% of SiO claim 1 , and from 6 to 7.5% of AlO claim 1 , wherein the total content of SiOand AlOis from 69 to 73%.3. Glass for chemical tempering claim 1 , which comprises claim 1 , as represented by mole percentage based on oxides claim 1 , from 62 to 66% of SiO claim 1 , from 6 to 12% of AlO claim 1 , from 7 to 13% of MgO claim 1 , from 9 to 17% of NaO claim 1 , and from 0 to 7% of KO claim 1 , wherein the difference obtained by subtracting the content of AlOfrom the total content of NaO and KO is less than 10% claim 1 , and when ZrOis contained claim 1 , its content is at most 0.8%.4. The glass for chemical tempering according to claim 3 , wherein the total content of SiOand AlOis more ...

Li2O-Al2O3-SiO2 CRYSTALLIZABLE GLASS AND Li2O-AI2O3-SiO2 CRYSTALLIZED GLASS OBTAINED BY CRYSTALLIZING SAME

Provided is a LiO—AlO—SiO-based crystallizable glass characterized by comprising, as a glass composition in terms of mass %, 55 to 75% of SiO, 19 to 24% of AlO, 3 to 4% of LiO, 1.5 to 2.8% of TiO, 3.8 to 4.8% of TiO+ZrO, and 0.1 to 0.5% of SnO, and satisfying a relationship of 4≦LiO+0.741MgO+0.367ZnO≦4.5. 1. A LiO—AlO—SiO-based crystallizable glass , comprising , as a glass composition in terms of mass % , 55 to 75% of SiO , 19 to 24% of AlO , 3 to 4% of LiO , 1.5 to 2.8% of TiO , 3.8 to 4.8% of TiO+ZrO , and 0.1 to 0.5% of SnO , and satisfying a relationship of 4≦LiO+0.741MgO+0.367ZnO≦4.5.2. The LiO—AlO—SiO-based crystallizable glass according to claim 1 , wherein the LiO—AlO—SiO-based crystallizable glass is manufactured by float forming.3. The LiO—AlO—SiO-based crystallizable glass according to claim 1 , further comprising 0.05 to 1.5% of BO.4. The LiO—AlO—SiO-based crystallizable glass according to claim 1 , comprising 0.1% or more of MgO.5. The LiO—AlO—SiO-based crystallizable glass according to claim 1 , further comprising 0.2% or less of NdO.6. The LiO—AlO—SiO-based crystallizable glass according to claim 1 , further comprising 60 to 300 ppm of FeO.7. A LiO—AlO—SiO-based crystallized glass claim 1 , which is obtained by crystallizing the LiO—AlO—SiO-based crystallizable glass according to .8. The LiO—AlO—SiO-based crystallized glass according to claim 7 , wherein the LiO—AlO—SiO-based crystallized glass claim 7 , at a thickness of 3 mm claim 7 , has a b* value of 4.5 or less in terms of L*a*b* representation based on a CIE standard.9. The LiO—AlO—SiO-based crystallized glass according to claim 7 , wherein the LiO—AlO—SiO-based crystallized glass claim 7 , at a thickness of 1.1 mm claim 7 , has a transmittance of 82.5% or more at a wavelength of 400 nm.102510251030. The LiO—AlO—SiO-based crystallized glass according to claim 7 , wherein the LiO—AlO—SiO-based crystallized glass has a thermal expansion coefficient of −.×/° C. to .×/° C. at to 380° C.11. A ...

GLASS SUBSTRATE AND METHOD FOR MANUFACTURING SAME

The present invention provides a glass substrate having high glass transition temperature and small compaction (C) in a heat treatment at a low temperature (150 to 300° C.), the glass substrate including SiO, AlO, BO, MgO, CaO, SrO, BaO, ZrO, NaO, KO, and LiO, wherein each amount of these compounds is specifically limited, AlO+KO is 7 to 27 mass %, NaO+KO is 11.5 to 22 mass %, MgO+CaO+SrO+BaO is 0.2 to 14 mass %, MgO+0.357AlO−0.239KO−5.58 is −3.0 to 1.5, NaO+0.272AlO+0.876KO−16.77 is −2.5 to 2.5, a glass transition temperature is 500° C. or higher, and an average thermal expansion coefficient at 50 to 350° C. is 100×10/° C. or less. 1. A glass substrate comprising , in mass percent based on the oxides:{'sub': '2', 'from 68 to 81% of SiO,'}{'sub': 2', '3, 'from 0.2 to 18% of AlO,'}{'sub': 2', '3, 'from 0 to 3% of BO,'}from 0.2 to 11% of MgO,from 0 to 3% of CaO,from 0 to 3% of SrO,from 0 to 3% of BaO,{'sub': '2', 'from 0 to 1% of ZrO,'}{'sub': '2', 'from 1 to 18% of NaO,'}{'sub': '2', 'from 0 to 15% of KO, and'}{'sub': '2', 'from 0 to 2% of LiO,'}{'sub': 2', '3', '2, 'wherein AlO+KO is from 7 to 27%,'}{'sub': 2', '2, 'NaO+KO is from 11.5 to 22%,'}MgO+CaO+SrO+BaO is from 0.2 to 14%,{'sub': 2', '3', '2, 'MgO+0.357AlO−0.239KO−5.58 is from −3.0 to 1.5,'}{'sub': 2', '2', '3', '2, 'NaO+0.272AlO+0.876KO−16.77 is from −2.5 to 2.5,'}a glass transition temperature is 500° C. or higher, and{'sup': '−7', 'an average thermal expansion coefficient at from 50 to 350° C. is 100×10/° C. or less.'}2. The glass substrate according to claim 1 , wherein a relationship between a temperature (T) at which a viscosity becomes 10dPa·s and a glass surface devitrification temperature (T) is T−T≧0° C.3. The glass substrate according to claim 1 , wherein a relationship between a temperature (T) at which a viscosity becomes 10dPa·s and a glass inner devitrification temperature (T) is T−T≧150° C.4. A method for manufacturing a glass substrate claim 2 , comprising molding a molten glass obtained by ...

TEMPERED GLASS, AND TEMPERED GLASS PLATE

Provided is a tempered glass having a compression stress layer in a surface thereof, the tempered glass comprising, as a glass composition in terms of mol %, 45 to 75% of SiO, 3 to 15% of AlO, 0 to 12% of LiO, 0.3 to 20% of NaO, 0 to 10% of KO, and 1 to 15% of MgO+CaO, and having a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 1, a molar ratio (BO+NaO)/SiOof 0.1 to 1, a molar ratio PO/SiOof 0 to 1, a molar ratio AlO/SiOof 0.01 to 1, and a molar ratio NaO/AlOof 0.1 to 5, wherein the surface is etched partially or entirely before tempering treatment. 1. A tempered glass having a compression stress layer in a surface thereof , the tempered glass comprising , as a glass composition in terms of mol % , 45 to 75% of SiO , 3 to 15% of AlO , 0 to 12% of LiO , 0.3 to 20% of NaO , 0 to 10% of KO , and 1 to 15% of MgO+CaO , and having a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 1 , a molar ratio (BO+NaO)/SiOof 0.1 to 1 , a molar ratio PO/SiOof 0 to 1 , a molar ratio AlO/SiOof 0.01 to 1 , and a molar ratio NaO/AlOof 0.1 to 5 , wherein the surface is etched partially or entirely before tempering treatment.2. The tempered glass according to claim 1 , wherein the tempered glass comprises claim 1 , as a glass composition in terms of mol % claim 1 , 45 to 75% of SiO claim 1 , 4 to 13% of AlO claim 1 , 0 to 3% of BO claim 1 , 0 to 8% of LiO claim 1 , 5 to 20% of NaO claim 1 , 0.1 to 10% of KO claim 1 , and 3 to 13% of MgO+CaO claim 1 , and has a molar ratio (AlO+NaO+PO)/SiOof 0.1 to 0.7 claim 1 , a molar ratio (BO+NaO)/SiOof 0.1 to 0.7 claim 1 , a molar ratio PO/SiOof 0 to 0.5 claim 1 , a molar ratio AlO/SiOof 0.01 to 0.7 claim 1 , and a molar ratio NaO/AlOof 0.5 to 4.3. The tempered glass according to claim 1 , wherein the tempered glass comprises claim 1 , as a glass composition in terms of mol % claim 1 , 45 to 75% of SiO claim 1 , 5 to 12% of AlO claim 1 , 0 to 1% of BO claim 1 , 0 to 4% of LiO claim 1 , 8 to 20% of NaO claim 1 , 0.5 to 10% of KO claim 1 , and 5 to 13% of MgO+CaO claim 1 , ...

Crystallized glass

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 .

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

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.

Glass for chemical tempering and glass plate for display device

To provide glass to be used for chemically tempered glass which is hardly broken even when flawed. Glass for chemical tempering, which comprises, as represented by mole percentage based on the following oxides, from 65 to 85% of SiO 2 , from 3 to 15% of Al 2 O 3 , from 5 to 15% of Na 2 O, from 0 and less than 2% of K 2 O, from 0 to 15% of MgO and from 0 to 1% of ZrO 2 , and has a total content Si0 2 +Al 2 O 3 of SiO 2 and Al 2 O 3 of at most 88%.

HIGH-STRENGTH ALKALI-ALUMINOSILICATE GLASS

A high-strength alkali-aluminosilicate glass, characterized by excellent meltability, fineability. and processibility, exhibits the following formula: SiO60.5 to 69.0 weight percent AlO7.0 to 11.8 weight percent BO0 to 4.0 weight percent MgO 2.0 to 8.5 weight percent CaO 0 to 4.0 weight percent ZnO 0 to 5.0 weight percent ZrO0 to 3.0 weight percent NaO 15.0 to 17.5 weight percent KO 0 to 2.7 weight percent LiO 0 to 2.0 weight percent and from 0 to 1.5 weight percent of a fining agents such as AsO, SbOCeO, SnO, Cl, F, (SO) and combinations thereof. The glass allows for adequate conditions for an alkali ion exchange treatment in a short time period (4 to 8 hours) and can also be produced according to the established, continuous, vertically downward directed drawing process such as the overflow down-draw method or the fusion method, the die slot or the slot down-draw method, or combinations thereof. The viscosity temperature profile of these glasses allows the use of conventional fining agents in combination at the lowest amounts possible and additionally allows the production of glasses that are free of or contain only small amounts of either or both of antimony oxide and arsenic oxide. 1. A high-strength alkali-aluminosilicate glass comprising:{'sub': '2', 'from 60.5 to 69.0 weight percent of SiO,'}{'sub': 2', '3, 'from 7.0 to 11.8 weight percent of AlO,'}{'sub': 2', '3, 'from 0 to 4.0 weight percent of BO,'}from 2.0 to 8.5 weight percent of MgO,from 0 to 4.0 weight percent of CaO,from 0 to 5.0 weight percent ZnO,{'sub': '2', 'from 0 to 3.0 weight percent of ZrO,'}{'sub': '2', 'from 15.0 to 17.5 weight percent of NaO,'}{'sub': '2', 'from 0 to 2.7 weight percent of KO,'}{'sub': '2', 'from 0 to 2.0 weight percent of LiO, and'}{'sub': 2', '3', '2', '3', '2', '2', '4, 'sup': −', '−', '2−, 'from 0 to 1.5 weight percent of a fining agent selected from AsO, SbO, CeO, SnO, Cl, F, SO, and combinations thereof.'}2. The high-strength alkali-aluminosilicate glass according to ...

Glass composition for producing high strength and high modulus fibers

A glass composition including SiO 2 in an amount from 74.5 to 80.0% by weight, AI 2 O 3 in an amount from 5.0 to 9.5%>> by weight, MgO in an amount from 8.75 to 14.75% by weight, CaO in an amount from 0.0 to 3.0% by weight, Li 2 O in an amount from 2.0 to 3.25% by weight, Na 2 O in an amount from 0.0 to 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include woven fabrics for use in forming wind blades, armor plating, and aerospace structures.

Glass compositions with improved chemical and mechanical durability

The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol. % to about 80 mol. % SiO 2 ; from about 3 mol. % to about 13 mol. % alkaline earth oxide; X mol. % Al 2 O 3 ; and Y mol. % alkali oxide. The alkali oxide may include Na 2 O in an amount greater than about 8 mol. %. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed from the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.

GLASS FOR CHEMICAL STRENGTHENING AND CHEMICAL STRENGTHENED GLASS

Glass for chemical strengthening, comprising 0.001% to 5% of Se in terms of molar percentage as a coloring component in the glass, wherein the glass has a property configured to provide an absolute value of Δa*m with 1.8 or less, the absolute value of Δa*m being a difference Δa*m between a value of chromaticity a* of reflected light by a D65 light source and a value of chromaticity a* of reflected light by an F2 light source, in a L*a*b* color system, the difference being expressed by the following expression (1), 1. Glass for chemical strengthening , comprising 0.001% to 5% of Se in terms of molar percentage as a coloring component in the glass , {'br': None, 'i': a*m=a*', 'D', 'a*', 'F, 'Δvalue(65 light source)−value(2 light source) \u2003\u2003(1).'}, 'wherein the glass has a property configured to provide an absolute value of Δa*m with 1.8 or less, the absolute value of Δa*m being a difference Δa*m between a value of chromaticity a* of reflected light by a D65 light source and a value of chromaticity a* of reflected light by an F2 light source, in a L*a*b* color system, the difference being expressed by the following expression (1),'}2. The glass for chemical strengthening according to claim 1 ,wherein the glass contains the Se in an amount of 0.05% to 5% in terms of molar percentage.3. The glass for chemical strengthening according to claim 1 , {'br': None, 'i': b*m=b*', 'D', 'b*', 'F, 'Δvalue(65 light source)−value(2 light source) \u2003\u2003(2).'}, 'wherein the glass has a property configured to provide an absolute value of Δb*m with 1.8 or less, the absolute value of Δb*m being a difference Δb*m between a value of chromaticity b* of the reflected light by the D65 light source and a value of chromaticity b* of the reflected light by the F2 light source, in the L*a*b* color system, the difference being expressed by the following expression (2),'}51. The glass for chemical strengthening according to claim claim 1 ,wherein the glass has a property configured to ...

ION EXCHANGEABLE LI-CONTAINING GLASS COMPOSITIONS FOR 3-D FORMING

According to one embodiment, a glass article may include SiO, AlO, LiO and NaO. The glass article may have a softening point less than or equal to about 810° C. The glass article may also have a high temperature CTE less than or equal to about 27×10/° C. The glass article may also be ion exchangeable such that the glass has a compressive stress greater than or equal to about MPa and a depth of layer greater than or equal to about 25 μm after ion exchange in a salt bath comprising KNOat a temperature in a range from about 390° C. to about 450° C. for less than or equal to approximately 15 hours. 1. A glass article comprising SiO , AlO , LiO and NaO , the glass article having:a softening point less than or equal to about 810° C.;{'sup': '−6', 'a high temperature CTE less than or equal to about 27×10/° C.; and'}{'sub': '3', 'a compressive stress greater than or equal to about 600 MPa and a depth of layer greater than or equal to about 25 μm after ion exchange in a salt bath comprising KNOin a temperature range from about 390° C. to about 450° C. for less than or equal to approximately 15 hours.'}2. The glass article of claim 1 , the glass article has L claim 1 , a* claim 1 , b* claim 1 , color coordinates of L from about 0 to about 5.0 claim 1 , a* from about −2.0 to about 2.0 claim 1 , and b* from about 0 to about −5.0.3. The glass article of claim 1 , wherein the glass article has an opacity greater than or equal to about 80% over a range of wavelengths from about 350 nm to about 750 nm.4. The glass article of comprising:{'sub': '2', 'from about 65 mol. % to about 71 mol. % SiO;'}{'sub': 2', '3, 'from about 7 mol. % to about 12 mol. % AlO;'}{'sub': '2', 'from about 1 mol. % to about 9 mol. % LiO;'}{'sub': '2', 'from about 6 mol. % to about 16 mol. % NaO;'}{'sub': '2', 'from about 0 mol. % to about 5 mol. % KO;'}from about 0.8 to about 10 mol. % of a divalent oxide, wherein the divalent oxide comprises at least one of MgO and ZnO; and{'sub': 2', '3', '2', '3, 'less ...

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

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 ...

Veneer Ceramic for Dental Restorations and Method for Veneering Dental Restorations

The invention is directed to veneer ceramics for dental restorations of framework ceramics comprising yttrium-stabilized zirconium dioxide. It is the object of the invention to make possible a translucent veneer ceramic which has high flexural strength as well as excellent adhesion to the framework ceramic of yttrium-stabilized zirconium dioxide. According to the invention, this object is met in a veneer ceramic for dental restorations made of yttrium-stabilized zirconium dioxide which is produced from the following components: a) SiO 2 58.0-74.0 percent by weight b) Al 2 O 3 4.0-19.0 percent by weight c) Li 2 O 5.0-17.0 percent by weight d) Na 2 O 4.0-12.0 percent by weight e) ZrO 2 0.5-6.0 percent by weight.

GLASS FOR CHEMICAL STRENGTHENING

There is provided a glass for chemical strengthening having a black 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, and 0.1% to 7% of a coloring component having at least one metal oxide selected from the group consisting of oxides of Co, Mn, Fe, Ni, Cu, Cr, V and Bi. 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 , and 0.1% to 7% of a coloring component having at least one metal oxide selected from the group consisting of oxides of Co , Mn , Fe , Ni , Cu , Cr , V and Bi.2. The glass for chemical strengthening according to claim 1 ,{'sub': 2', '3', '3', '4', '2', '3', '2', '5, 'wherein the coloring component in the glass is constituted of, in mole percentage based on oxides, 0.01% to 6% of FeO, 0% to 6% of CoO, 0% to 6% of NiO, 0% to 6% of MnO, 0% to 6% of CrO, and 0% to 6% of VO.'}3. The glass for chemical strengthening according to claim 1 , comprising 0.005% to 2% of a color correcting component having at least one metal oxide selected from the group consisting of oxides of Ti claim 1 , Ce claim 1 , Er claim 1 , Nd and Se.4. The glass for chemical strengthening according to claim 1 , comprising claim 1 , in mole percentage based on following oxides claim 1 , 60% to 80% of SiO claim 1 , 3% to 15% of AlO claim 1 , 5% to 15% of NaO claim 1 , 0% to 4% of KO claim 1 , 0% to 15% of ...

GLASS SUBSTRATES WITH MODIFIED SURFACE RESISTANT TO WEATHERING

A light guide plate that includes a glass substrate including an edge surface and at least two major surfaces defining a thickness and an edge surface, the edge surface configured to receive light from a light source and the glass substrate configured to distribute the light from the light source, wherein the glass substrate comprises an alkali-containing bulk and an alkali-depleted surface layer, the alkali-depleted surface layer comprising about 0.5 atomic % alkali or less. Display products and methods of processing a glass substrate for use as a light guide plate are also provided. 1. A light guide plate , comprising:a glass substrate including an edge surface and at least two major surfaces defining a thickness and an edge surface configured to receive light from a light source and the glass substrate configured to distribute the light from the light source; wherein the glass substrate comprises:an alkali-containing bulk; andan alkali-depleted surface layer, the alkali-depleted surface layer comprising about 0.5 atomic % alkali or less.2. The light guide plate of claim 1 , wherein the alkali-depleted surface layer comprises about 0.5 atomic % alkaline earth or less.3. The light guide plate of claim 1 , wherein the alkali-depleted surface layer comprises greater than about 90 mol % SiOand at least about 5 mol % AlO.4. The light guide plate of claim 1 , wherein the light guide plate exhibits a transmittance normal to the alkali-depleted surface layer greater than 90% over a wavelength range from 400 nm to 700 nm.5. The light guide plate of claim 1 , further comprising one or more of a light extraction feature (LEF) and a lenticular lens on the alkali-depleted surface layer.6. The light guide plate of claim 1 , wherein the alkali-depleted surface layer reduces formation of weathering products upon aging at 60° C. and 90% relative humidity for 960 hours compared to a light guide plate that does not comprise an alkali-depleted surface layer.8. The light guide plate ...

Glass sheet with a high level of infrared radiation transmission

The invention relates to a glass sheet with a high level of infrared radiation transmission, that can be used especially in a tactile tablet, panel or screen. More precisely, the invention relates to a glass sheet having a composition comprising, as a content expressed in total weight percentages of glass: SiO2 55-78%; AI2O3 0-18%; B2O3 0-18%; Na2O 5-20%; CaO 0-15%; MgO 0-10%; K2O 0-10%; BaO 0-5%; total iron (expressed in the form of Fe2O3) 0.002-0.06%; and a chromium content (expressed in the form of Cr2O3) of between 0.002 and 0.06%.

Amorphous Silica Products and Methods of Producing Amorphous Silica Products

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 ...

TEMPERED GLASS, TEMPERED GLASS PLATE, AND GLASS FOR TEMPERING

A tempered glass has a compressive stress layer in a surface thereof, includes as a glass composition, in terms of mass %, 50 to 80% of SiO, 10 to 30% of AlO, 0 to 6% of BO, 0 to 2% of LiO, and 5 to 25% of NaO, and is substantially free of AsO, SbO, PbO, and F. 1. A tempered glass having a compressive stress layer in a surface thereof , comprising as a glass composition , in terms of mass % , 50 to 80% of SiO , 10 to 30% of AlO , 0 to 6% of BO , 0 to 2% of LiO , and 5 to 25% of NaO , and being substantially free of AsO , SbO , PbO , and F.2. The tempered glass according to claim 1 , wherein the tempered glass comprises as a glass composition claim 1 , in terms of mass % claim 1 , 50 to 80% of SiO claim 1 , 10 to 30% of AlO claim 1 , 0 to 6% of BO claim 1 , 0 to 1.7% of LiO claim 1 , more than 7.0 to 25% of NaO claim 1 , and 0 to 2% of SrO.3. The tempered glass according to claim 1 , wherein the tempered glass comprises as a glass composition claim 1 , in terms of mass % claim 1 , 50 to 76% of SiO claim 1 , more than 16.0 to 30% of AlO claim 1 , 0 to 6% of BO claim 1 , 0 to 1.7% of LiO claim 1 , more than 7.0 to 25% of NaO claim 1 , 0 to 2% of SrO claim 1 , and 0 to 4.5% of TiO.4. The tempered glass according to claim 1 , wherein the tempered glass comprises as a glass composition claim 1 , in terms of mass % claim 1 , 50 to 76% of SiO claim 1 , more than 16.0 to 30% of AlO claim 1 , 0 to 6% of BO claim 1 , 0 to 1.7% of LiO claim 1 , more than 7.0 to 25% of NaO claim 1 , 0 to 2% of SrO claim 1 , 0 to 0.5% of TiO claim 1 , and 0 to 4% of ZrO.5. The tempered glass according to claim 1 , wherein the tempered glass comprises as a glass composition claim 1 , in terms of mass % claim 1 , 50 to 76% of SiO claim 1 , more than 16.0 to 30% of AlO claim 1 , 0 to 6% of BO claim 1 , 0 to 1.7% of LiO claim 1 , more than 7.0 to 25% of NaO claim 1 , 0 to 2% of SrO claim 1 , 0 to 0.5% of TiO claim 1 , 0 to 4% of ZrO claim 1 , and 0 to 1% of PO claim 1 , and has a molar ratio (MgO+CaO ...

Glass articles exhibiting improved fracture performance

A glass-based article having an amorphous phase and a crystalline phase, and a first surface and a second surface opposing the first surface thereby defining a thickness (t) of the glass-based article. The glass-based article having a stress profile with a surface compressive stress (CS) and a maximum central tension (CT). The maximum CT is greater than or equal to 50 MPa and less than or equal to 200 MPa and is positioned within the glass-based article at a range from greater than or equal to 0.4·t and less than or equal to 0.6·t. The surface CS is greater than or equal to 200 MPa and less than or equal to 500 MPa, and a depth of compression (DOC) is from greater than or equal to 0.14·t and less than or equal to 0.25·t.

COLORED GLASS

A colored glass, a surface of which is roughened in whole or in part. In the colored glass, an average value of gloss values measured at 9 points in the surface thereof at an incident angle of 60° in accordance with JIS 28741 (1991) is 30 or less, a ratio of a difference between a maximum gloss value and a minimum gloss value to the maximum gloss value is 20% or less, and a minimum value of visible-light transmittance at a thickness of 0.8 mm is 70% or less. 1. A colored glass , wherein a surface of the colored glass is roughened in whole or in part , and an average value of gloss values measured at 9 points in the surface thereof at an incident angle of 60° in accordance with JIS Z8741 (1991) is 30 or less , a ratio of a difference between a maximum gloss value and a minimum gloss value to the maximum gloss value is 20% or less , and a minimum value of visible-light transmittance at a thickness of 0.8 mm is 70% or less.2. The colored glass according to claim 1 , wherein a surface roughness Ra measured in accordance with JIS B0633 (2001) is from 0.2 to 1 μm.3. The colored glass according to claim 1 , wherein a maximum value of an absorption coefficient to a light having a wavelength of 380 to 780 nm is 0.1 mmor more.4. The colored glass according to claim 1 , which comprises a compressive stress layer in the surface thereof.5. The colored glass according to claim 1 , which comprises at least one component selected from the group consisting of oxides of Co claim 1 , Mn claim 1 , Fe claim 1 , Ni claim 1 , Cu claim 1 , Cr claim 1 , V claim 1 , Bi claim 1 , Se claim 1 , Ti claim 1 , Ce claim 1 , Er and Nd claim 1 , as a coloring component.6. The colored glass according to claim 1 , which is configured to enclose an electronic device.7. The colored glass according to claim 6 , wherein the electronic device is a portable electronic device.8. A portable electronic device claim 1 , comprising the colored glass according to claim 1 , wherein the colored glass is configured ...

3D PRINTER PRINTHEAD, 3D PRINTER USING SAME, METHOD FOR MANUFACTURING MOLDED PRODUCT BY USING 3D PRINTER, METHOD FOR MANUFACTURING ARTIFICIAL TOOTH BY USING 3D PRINTER, AND METHOD FOR MANUFACTURING MACHINABLE GLASS CERAMIC MOLDED PRODUCT BY USING 3D PRINTER

The present invention relates to a 3D printer printhead, a 3D printer using the same, a method for manufacturing a molded product by using the 3D printer, a method for manufacturing an artificial tooth by using the 3D printer, and a method for manufacturing a machinable glass ceramic molded product by using the 3D printer, the 3D printer printhead comprising: an inlet through which glass wire, which is a raw material, is introduced; a heating means for heating the glass wire introduced through the inlet; a melting furnace for providing a space in which the glass wire is fused; and a nozzle connected to the lower part of the melting furnace so as to temporarily store the fused glass or discharge a targeted amount of the fused glass, wherein the melting furnace includes an exterior frame made from a heat resistant material and an interior frame having a crucible shape, and the interior frame is made from platinum (Pt), a Pt alloy or graphite, which have a low contact angle, or a material having a surface coated with Pt or a diamond-like carbon (DLC) so as to prevent the fused glass from sticking thereto. According to the present invention, the molded product, the artificial tooth, and the machinable glass ceramic molded product can be manufactured with excellent mechanical properties, thermal durability, chemical durability and oxidation resistance and outstanding texture by using the glass wire as a raw material. 1. A 3D printer printhead comprising:an inlet thorough which a glass wire, which is a raw material, is introduced;a heating means configured to heat the glass wire introduced through the inlet;a melting furnace configured to provide a space in which the glass wire is melted to produce a molten glass; anda nozzle coupled to a lower part of the melting furnace to temporarily store the molten glass or discharge a desired amount of the molten glass,wherein the melting furnace comprises an outer frame made of a heat-resistant material and an inner frame having a ...

METHODS FOR PREVENTING BLISTERS IN LAMINATED GLASS ARTICLES AND LAMINATED GLASS ARTICLES FORMED THEREFROM

A method for forming a laminated glass article may include flowing a molten first glass composition having a first RO concentration and a first fining agent with a first fining agent concentration. The method may also include flowing a molten second glass composition having a second RO concentration less than the first RO concentration of the first glass composition and a second fining agent with a second fining agent concentration that is greater than or equal to the first fining agent concentration of the first glass composition. The molten first glass composition may be contacted with the molten second glass composition to form an interface between the molten first glass composition and the molten second glass composition. 1. A laminated glass article comprising:{'sub': '2', 'a first glass layer formed from a first glass composition comprising a first RO concentration and a first fining agent with a first fining agent concentration, wherein R is an element from Group I of the periodic table; and'}{'sub': 2', '2, 'a second glass layer fused to the first glass layer, the second glass layer formed from a second glass composition comprising a second RO concentration less than the first RO concentration of the first glass composition and a second fining agent with a second fining agent concentration that is greater than or equal to the first fining agent concentration of the first glass composition'}{'sup': '+2', 'wherein the first fining agent and the second fining agent are oxides of Sn, and a ratio of Snions to a total concentration of Sn in the first molten glass composition is greater than or equal to about 0.15.'}2. The laminated glass article of claim 1 , wherein a difference between the first RO concentration and the second RO concentration is at least 3 mol %.3. The laminated glass article of claim 1 , wherein the laminated glass article comprises less than 1 blister defect/lb of the laminated glass article.4. The laminated glass article of claim 1 , wherein ...

CHEMICALLY TEMPERABLE, CORROSION-STABLE GLASSES

A glass is described, a glass article made of the glass as well as uses and production methods. The glass constituents are selected such that it results in excellent chemical stability and ion ex-changeability. The glass has a composition characterized by the following glass constituent phases: 0-35 mol % reedmergnerite; 10-60 mol % albite; 3.5-25 mol % orthoclase; 0-40 mol % natrosilite; 0-20 mol % parakeldyshite; 0-20 mol % narsarsukite; 0-35 mol % disodium zinc silicate; 0-35 mol % silicon dioxide; 0-30 mol % cordierite; and 0-20 mol % danburite. A quotient of a coefficient of thermal expansion of the glass multiplied by 1000 (in ppm/K) and the product of a pH value and a removal rate in alkaline environment (in mg/(dmh)) according to ISO 695 is at least 9.25. 1. A glass , comprising: 0-35 mol % reedmergnerite;', '10-60 mol % albite;', '3.5-25 mol % orthoclase;', '0-40 mol % natrosilite;', '0-20 mol % parakeldyshite;', '0-20 mol % narsarsukite;', '0-35 mol % disodium zinc silicate;', '0-35 mol % silicon dioxide;', '0-30 mol % cordierite; and', {'sup': '2', '0-20 mol % danburite, wherein a quotient of a coefficient of thermal expansion of the glass multiplied by 1000 (in ppm/K) and the product of a pH value and a removal rate in alkaline environment (in mg/(dm3h)) according to ISO 695 is at least 9.25.'}], 'a composition characterized by the following glass constituent phases2. The glass of claim 1 , wherein a proportion of silicon dioxide is at most 20 mol %.3. The glass of claim 1 , wherein a proportion of natrosilite is at most 35 mol %.4. The glass of claim 1 , wherein a proportion of albite is at least 12 mol %.5. The glass of claim 1 , wherein a proportion of orthoclase is at least one of at least 5 mol % or at most 20 mol %.6. The glass of claim 1 , wherein a proportion of parakeldyshite is at most 5 mol %.7. The glass of claim 1 , wherein a ratio of cordierite to silicon dioxide in mole percentages is at least 3.8. The glass of claim 1 , wherein a ...

Highly stable and chemically temperable glasses

Glasses and glass products which combine the chemical temperability with very good alkali and acid resistance, hydrolytic resistance, as well as a desired coefficient of thermal expansion are provided. The glass has a composition characterized by the following constituent phases: a composition characterized by the following constituent phases: 20-60 mol % albite; 0-40 mol % silicon dioxide; 0-20 mol % orthoclase; 0-10 mol % wollastonite; 0-20 mol % enstatite; 0-20 mol % parakeldyshite; 0-20 mol % narsarsukite; 0-40 mol % disodium zinc silicate; 0-20 mol % cordierite; 0-10 mol % strontium silicate; and 0-10 mol % barium silicate.

CHEMICALLY TEMPERABLE GLASSES WITH HIGH CHEMICAL RESISTANCE AND CRACKING RESISTANCE

A glass, a glass article made of the glass as well as uses and production methods are disclosed. The glass constituents are selected such that excellent scratch resistance and impact strength are provided. The glass has a composition characterized by the following constituent phases: 15-60 mol % reedmergnerite; 20-60 mol % albite; 0-20 mol % nepheline; 0-20 mol % orthoclase; 0-20 mol % parakeldyshite; 0-20 mol % narsarsukite; 0.1-30 mol % disodium zinc silicate; 0-4 mol % diboron trioxide; 0-20 mol % cordierite; and 0-20 mol % danburite. A quotient of a coefficient of thermal expansion of the glass multiplied by 1000 (in ppm/K) and the product of a pH value and a removal rate in alkaline environment (in mg/(dm3h)) according to ISO 695 is at least 8 and the removal rate in alkaline environment according to ISO 695 is at most 115 mg/(dm3h). 1. A glass , comprising: 15-60 mol % reedmergnerite;', '20-60 mol % albite;', '0-20 mol % nepheline;', '0-20 mol % orthoclase;', '0-20 mol % parakeldyshite;', '0-20 mol % narsarsukite;', '0.1-30 mol % disodium zinc silicate;', '0-4 mol % diboron trioxide;', '0-20 mol % cordierite; and', {'sup': 2', '2, '0-20 mol % danburite, wherein a quotient of a coefficient of thermal expansion of the glass multiplied by 1000 (in ppm/K) and the product of a pH value and a removal rate in alkaline environment (in mg/(dm3h)) according to ISO 695 is at least 8 and the removal rate in alkaline environment according to ISO 695 is at most 115 mg/(dm3h).'}], 'a composition characterized by the following constituent phases2. The glass of claim 1 , wherein a proportion of diboron trioxide is at most 3 mol %.3. The glass of claim 1 , wherein a proportion of cordierite is at most 15 mol %.4. The glass of claim 1 , wherein a proportion of albite is at least one of at least 30 mol % or at most 55 mol %.5. The glass of claim 1 , wherein a proportion of orthoclase is at least one of at least 2 mol % or at most 15 mol %.6. The glass of claim 1 , wherein a ...

Fusion-formable glass-based articles including a metal oxide concentration gradient

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 about 0.7·t to t, comprise a tangent with a slope having an absolute value greater than about 0.1 MPa/micrometer. 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) and a maximum central tension of less than about 71.5/√(t) (MPa). 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.

GLASS PACKAGING ENSURING CONTAINER INTEGRITY

A strengthened glass container or vessel such as, but not limited to, vials for holding pharmaceutical products or vaccines in a hermetic and/or sterile state. The strengthened glass container undergoes a strengthening process that produces compression at the surface and tension within the container wall. The strengthening process is designed such that the tension within the wall is great enough to ensure catastrophic failure of the container, thus rendering the product unusable, should sterility be compromised by a through-wall crack. The tension is greater than a threshold central tension, above which catastrophic failure of the container is guaranteed, thus eliminating any potential for violation of pharmaceutical integrity. 1. A method of making a glass article having a first surface and a second surface separated by a thickness , the method comprising:forming a first region in at least one surface of the glass article by ion-exchanging a glass of the glass article, wherein the first region extends from at least one of the first surface and the second surface to a depth of layer in the glass, wherein the first region is under a compressive stress; andforming a second region under a central tension of greater than 13 MPa to less than 13.8 MPa, the second region extending from the depth of layer, wherein the central tension is sufficient to allow self-propagation of a flaw front from the first surface to the second surface and laterally across at least the first surface, wherein the glass article is a container adapted to hold a pharmaceutical product, a vaccine, a biologic, a foodstuff, or a solution.2. The method of claim 1 , wherein the self-propagation of the flaw front from the first surface to the second surface and laterally across at least the first surface renders the glass article unsuitable for its intended use.3. The method of claim 1 , wherein the self-propagation of the flaw front from the first surface to the second surface further comprises ...

GLASS ARTICLES EXHIBITING IMPROVED FRACTURE PERFORMANCE

Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed. 1. A strengthened glass article comprising:a first surface and a second surface opposing the first surface defining a thickness (t) of about 1.1 mm or less;a compressive stress layer extending from the first surface to a depth of compression (DOC) of greater than about 0.11·t;wherein, after the glass article fractures according to a Frangibility Test, the glass article includes a plurality of fragments, wherein at least 90% of the plurality of fragments have an aspect ratio of about 5 or less.2. The strengthened glass article of claim 1 , wherein the glass article fractures into the plurality of fragments in 1 second or less claim 1 , as measured by the Frangibility Test.3. The strengthened glass article of claim 1 , wherein at least 80% of the plurality of fragments have a maximum dimension that is less than or equal to 3·t.4. The strengthened glass article of claim 1 , wherein at least 50% of plurality of fragments comprises an aspect ratio of 2 or less.5. The strengthened glass article of claim 1 , wherein at least 50% of the plurality of fragments comprises a volume of less than or equal to about 10 mm.6. The strengthened glass article of claim 1 , wherein the plurality of fragments comprises an ejected portion of fragments ...

Glass articles exhibiting improved fracture performance

Embodiments of this disclosure pertain to a strengthened glass article including a first surface and a second surface opposing the first surface defining a thickness (t) of about less than about 1.1 mm, a compressive stress layer extending from the first surface to a depth of compression (DOC) of about 0.1·t or greater, such that when the glass article fracture, it breaks into a plurality of fragments having an aspect ratio of about 5 or less. In some embodiments, the glass article exhibits an equibiaxial flexural strength of about 20 kgf or greater, after being abraded with 90-grit SiC particles at a pressure of 25 psi for 5 seconds. Devices incorporating the glass articles described herein and methods for making the same are also disclosed.

ZIRCON COMPATIBLE GLASSES FOR DOWN DRAW

A glass that is down-drawable and ion exchangeable. The glass has a temperature Twhich the viscosity is 35 kilopoise. Tis less than the breakdown temperature Tof zircon. 131-. (canceled)32. A glass comprising SiO , AlO , and NaO , wherein SiO+BO≧66 mol % , AlO≧7 mol % , BO≦7 mol % , NaO≧9 mol % , BO+NaO+KO+MgO+CaO≧18 mol % , and CaO≦2 mol % , wherein 610.6 mol %−41.0[AlO]+9.9[BO]−3.5[NaO]−20.2[KO]−25.6[MgO]+34.2[CaO]≧0 , where concentrations [AlO] , [BO] , [NaO] , [KO] , [MgO] , and [CaO] are expressed in mol %.33. The glass of claim 32 , wherein the glass is ion exchanged to form a compressive layer on at least one surface of the glass.34. The glass of claim 33 , wherein the ion exchanged glass has a compressive stress of at least 350 MPa and a compressive depth of layer of at least 20 microns.35. The glass of claim 32 , wherein the glass comprises: 61 mol %≦SiO≦75 mol %; 7 mol %≦AlO≦15 mol %; 0 mol %≦BO≦7 mol %; 9 mol %≦NaO≦21 mol %; 0 mol %≦KO≦4 mol %; 0 mol %≦MgO≦7 mol %; and 0 mol %≦CaO≦3 mol %.36. The glass of claim 32 , wherein the glass is down-drawable.37. The glass of claim 32 , wherein the glass is fusion drawn into a glass sheet.38. The glass of claim 37 , wherein the glass sheet has less than one inclusion of solid ZrOper pound of glass sheet.39. The glass of claim 32 , wherein BO+NaO+KO−AlO≧0 mol %.40. The glass of claim 32 , wherein the glass has a liquidus viscosity of greater than about 100 kpoise.41. The glass of claim 32 , wherein the glass has a 350 poise temperature Tof less than or equal to 1650° C.42. The glass of claim 32 , wherein the glass is formed into one of a cover plate claim 32 , a window claim 32 , a casing claim 32 , a display screen claim 32 , and a touch panel of an electronic device.43. The glass of claim 32 , wherein the glass has a temperature Twhich the glass has a viscosity of 35 kpoise and a zircon breakdown temperature Tat which zircon breaks down to form ZrOand SiO claim 32 , wherein Tis greater than T.44. A glass ...

ION-EXCHANGED GLASS OF HIGH SURFACE COMPRESSION AND SHALLOW DEPTH OF LAYER WITH HIGH RESISTANCE TO RADIAL CRACK FORMATION FROM VICKERS INDENTATION

Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack formation from Vickers indentation than glasses with the same compressive stress, but higher depths of layer. 1. A glass article comprising:{'br': None, 'sub': '2', 'about 40 mol % to about 70 mol % SiO;'}{'br': None, 'sub': 2', '3, 'about 11 mol % to about 25 mol % AlO;'}{'br': None, 'sub': 2', '5, 'at least 4 mol % to about 15 mol.% PO;'}{'br': None, 'sub': 2', '3, 'less than about 1 mol % BO; and'}{'br': None, 'sub': '2', 'from 13 mol % to about 25 mol % NaO.'}2. The glass article of claim 1 , wherein:{'br': None, 'sub': 2', '3', 'x, '0.6<[MO(mol %)/RO(mol %)]<1.4; or \u2003\u2003i.'}{'br': None, 'sub': 2', '5', '2', '2', '3, '1.3<[(PO+RO)/MO]≦2.3, \u2003\u2003ii.'}{'sub': 2', '3', '2', '3', '2', '3', 'x', '2, 'where MO=AlO+BO, RO is the sum of monovalent and divalent cation oxides present in the glass composition, and RO is the sum of monovalent cation oxides present in the glass composition.'}3. The glass article of claim 1 , wherein the glass article is ion-exchange strengthened with a compressive stress from about 600 to about 1200 MPa at a depth of layer from about 10 to about 40 μm and an indentation fracture threshold from about 10 to about 50 kg.4. The glass article of claim 1 , wherein the glass article satisfies one or more of:{'br': None, 'sub': 2', '3', 'x, '0.6<[MO(mol %)/RO(mol %)]<1.4;'}{'br': None, 'sub': 2', '3', 'x, '0.6<[MO(mol %)/RO(mol %)]<1;'}{'br': None, 'sub': 2', '5', '2', '2', '3, '1.3<[(PO+RO)/MO]≦2.3; and'}{'br': None, 'sub': 2', '5', '2', '2', '3, '1.5<[(PO+RO)/MO]≦2.0.'}5. The glass article of claim 1 , wherein the glass article comprises less than 1 mol % KO or the monovalent and divalent cation oxides are selected from the group consisting of ...

Ion exchangeable glass with high crack initiation threshold

Alkali aluminosilicate glasses that are resistant to damage due to sharp impact and capable of fast ion exchange are provided. The glasses comprise at least 4 mol % P 2 O 5 and, when ion exchanged, have a Vickers indentation crack initiation load of at least about 7 kgf.

ION EXCHANGEABLE LI-CONTAINING GLASS COMPOSITIONS FOR 3-D FORMING

According to one embodiment, a glass article may include SiO, AlO, LiO and NaO. The glass article may have a softening point less than or equal to about 810° C. The glass article may also have a high temperature CTE less than or equal to about 27×10/° C. The glass article may also be ion exchangeable such that the glass has a compressive stress greater than or equal to about 600 MPa and a depth of layer greater than or equal to about 25 μm after ion exchange in a salt bath comprising KNOat a temperature in a range from about 390° C. to about 450° C. for less than or equal to approximately 15 hours. 127-. (canceled)28. A glass article comprising:{'sub': '2', 'greater than or equal to 67 mol. % to about 71 mol. % SiO;'}{'sub': 2', '3, 'from about 7 mol. % to about 12 mol. % AlO;'}{'sub': '2', 'from about 1 mol. % to about 9 mol. % LiO;'}{'sub': '2', 'less than about 16 mol. % NaO;'}{'sub': '2', 'greater than 0 mol. % to about 5 mol. % KO; and'}from about 0.8 mol. % to about 10 mol. % of a divalent oxide, wherein the divalent oxide comprises greater than 0 mol. % to about 1 mol. % CaO and at least one of MgO and ZnO.29. The glass article of further comprising from about 0.5 mol. % to about 2 mol % ZrO.30. The glass article of claim 28 , wherein a concentration of KO is less than or equal to about 3.0 mol. %.31. The glass article of claim 28 , wherein a concentration of CaO is less than or equal to about 0.5 mol. %.32. The glass article of claim 28 , wherein the concentration of BOis less than or equal to 1.0 mol. %.33. The glass article of claim 28 , wherein the glass article is substantially free of BO.34. The glass article of claim 28 , wherein a sum of a concentration of AlO(mol. %) claim 28 , and a concentration of the divalent oxide (mol. %) is greater than about 10 mol %.35. The glass article of claim 28 , wherein a concentration of SiOis greater than or equal to 68 mol. %.36. The glass article of claim 28 , wherein the glass article is ion exchange strengthened. ...

GLASS PLATE FOR LIGHT GUIDE PLATE

A glass plate for a light guide plate includes a light emitting surface; and a light scattering surface that is opposite to the light emitting surface, wherein a refractive index distribution is provided between the light emitting surface and the light scattering surface in a plate thickness direction, and wherein a refractive index calculated from a measured value of reflectance of the light scattering surface is greater than a refractive index of an inner part of the glass plate measured by a V block method after each of the light emitting surface and the light scattering surface is polished and removed by 100 microns. 1. A glass plate for a light guide plate comprising:a light emitting surface; anda light scattering surface that is opposite to the light emitting surface,wherein a refractive index distribution is provided between the light emitting surface and the light scattering surface in a plate thickness direction, andwherein a refractive index calculated from a measured value of reflectance of the light scattering surface is greater than a refractive index of an inner part of the glass plate that is measured by a V block method after each of the light emitting surface and the light scattering surface is polished and removed by 100 microns.2. The glass plate for the light guide plate according to claim 1 , wherein a refractive index calculated from a measured value of reflectance of the light emitting surface is less than the refractive index of the inner part of the glass plate that is measured by the V block method after each of the light emitting surface and the light scattering surface is polished and removed by 100 microns.3. A glass plate for a light guide plate comprising:a light emitting surface; anda light scattering surface that is opposite to the light emitting surface,wherein a refractive index distribution is provided between the light emitting surface and the light scattering surface in a plate thickness direction, andwherein a refractive index ...

Intermediate to high cte glasses and glass articles comprising the same

Intermediate to high CTE glass compositions and laminates formed from the same are described. The glasses described herein have properties, such as liquidus viscosity or liquidus temperature, which make them particularly well suited for use in fusion forming processes, such as the fusion down draw process and/or the fusion lamination process. Further, the glass composition may be used in a laminated glass article, such as a laminated glass article formed by a fusion laminate process, to provide strengthened laminates via clad compression as a result of CTE mismatch between the core glass and clad glass.

GLASS-RESIN COMPOSITE

A glass-resin composite of the present invention includes a plurality of glass sheets and a resin sheet which are integrally combined with each other via an organic resin intermediate layer, wherein, out of outer glass sheets of the plurality of glass sheets, at least one glass sheet has a crystallinity of 30% or less and a Young's modulus higher than a Young's modulus of its inner adjacent glass sheet by 5 GPa or more. 1. A glass-resin composite for a window glass , comprising at least a plurality of glass sheets and a resin sheet ,wherein the plurality of glass sheets and the resin sheet are integrally combined with each other via an organic resin intermediate layer, andwherein, out of outer glass sheets of the plurality of glass sheets, at least one glass sheet has a crystallinity of 30% or less and a Young's modulus higher than a Young's modulus of its inner adjacent glass sheet by 5 GPa or more.2. The glass-resin composite according to claim 1 , wherein claim 1 , out of the outer glass sheets claim 1 , at least one glass sheet has a glass transition temperature of 850° C. or less.3. The glass-resin composite according to claim 1 , wherein claim 1 , out of the outer glass sheets claim 1 , at least one glass sheet is amorphous claim 1 , and comprises as a glass composition claim 1 , in terms of mol % claim 1 , 45% to 80% of SiO claim 1 , 5% to 30% of AlO claim 1 , 0% to 20% of LiO+NaO+KO claim 1 , and 3% to 35% of MgO+CaO+SrO+BaO.4. The glass-resin composite according to claim 1 , wherein an innermost glass sheet of the plurality of glass sheets comprises soda lime glass.5. The glass-resin composite according to claim 1 , wherein the resin sheet is arranged on an inside with respect to an innermost glass sheet of the plurality of glass sheets.6. The glass-resin composite according to claim 1 , wherein the resin sheet comprises a polycarbonate sheet.7. The glass-resin composite according to claim 1 , wherein the glass-resin composite has a total thickness of 45 mm ...

PROTECTIVE GLASS FOR A CAPACITIVE TOUCH CONTROL SYSTEM

This invention relates to a protective glass for a capacitive touch control system having a dielectric constant of 8.0-9.8 at room temperature and at an operating frequency of 1 kHz; and another protective glass for a capacitive touch control system, comprising a compressive stress layer of a certain depth formed on the surface of the glass through chemical strengthening treatment. High dielectric constant and high strength glass may be provided, which is applicable to protective glass for a capacitive touch control system and may have high light transmittance and create a good user experience of touch control. 1. A protective glass for a capacitive touch control system , having a dielectric constant of 8.0-9.8 , preferably 8.0-9.0 , at room temperature and at an operating frequency of 1 kHz.2. A protective glass for a capacitive touch control system , comprising a compressive stress layer of a certain depth formed on the surface of the glass through chemical strengthening treatment.3. The protective glass for a capacitive touch control system of claim 2 , wherein through first chemical strengthening treatment claim 2 , the surface of the glass obtains a compressive stress of 300-1100 MPa claim 2 , preferably 600-1100 MPa claim 2 , more preferably 650-1100 MPa claim 2 , and a depth of the compressive stress layer of 10-60 μm claim 2 , preferably 15-50 μm claim 2 , more preferably 20-45 μm; and through second or more chemical strengthening treatments claim 2 , the surface of the glass obtains a superposed compressive stress of 300-1100 MPa claim 2 , preferably 650-1100 MPa claim 2 , and a depth of the compressive stress layer of 10-90 μm claim 2 , preferably 20-80 μm.4. The protective glass for a capacitive touch control system of claim 3 , wherein the first chemical strengthening treatment is performed at the temperature of 380-500° C. for 2-10 hours.5. The protective glass for a capacitive touch control system of claim 3 , wherein the second chemical strengthening ...

GLASS FOR CHEMICAL STRENGTHENING

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+ ...

GLASS SHEET

A glass sheet, the composition of which is of the lithium aluminosilicate type and includes at most 1% by weight of sodium oxide, the thickness of which is at most 2 mm, having a surface region under compression obtained by ion exchange and a central region under tension, such that the flexural stress at break in a ring-on-tripod test is at least 50 MPa, after Vickers indentation under a load of 120 N. 1. A lithium aluminosilicate glass sheet , a composition of which comprises at most 1% by weight of sodium oxide , a thickness of which is at most 2 mm , having a surface region under compression obtained by ion exchange and a central region under tension , such that a flexural stress at break in a ring-on-tripod test is at least 50 MPa , after Vickers indentation under a load of 120 N.2. The lithium aluminosilicate glass sheet as claimed in claim 1 , wherein the flexural stress at break in a ring-on-tripod test is at least 100 MPa claim 1 , after Vickers indentation under a load of 120 N.3. The lithium aluminosilicate glass sheet as claimed in claim 1 , such that wherein the flexural stress at break in a ring-on-tripod test is at least 300 MPa claim 1 , after Vickers indentation under a load of 10 N.4. The lithium aluminosilicate glass sheet as claimed in claim 1 , the thickness of which is at most 1.5 mm and at least 0.25 mm.5. The lithium aluminosilicate glass sheet as claimed in claim 4 , the thickness of which is at most 1.1 mm.6. The lithium aluminosilicate glass sheet as claimed in claim 1 , wherein an exchange depth is at least 40 micrometers.7. The lithium aluminosilicate glass sheet as claimed in claim 1 , such that the surface region under compression is obtained by ion exchange using sodium ions.9. The lithium aluminosilicate glass sheet as claimed in claim 8 , wherein the content by weight of CaO is at most 3%.11. An electronic device claim 1 , comprising at least one lithium aluminosilicate glass sheet as claimed in claim 1 , as protective glass claim 1 ...

Fining agents for silicate glasses

A fining agent for reducing the concentration of seeds or bubbles in a silicate glass. The fining agent includes at least one inorganic compound, such as a hydrate or a hydroxide that acts as a source of water. In one embodiment, the fining agent further includes at least one multivalent metal oxide and, optionally, an oxidizer. A fusion formable and ion exchangeable silicate glass having a seed concentration of less than about 1 seed/cm 3 is also provided. Methods of reducing the seed concentration of a silicate glass, and a method of making a silicate glass having a seed concentration of less than about 1 seed/cm 3 are also described.

GLASS PLATE FOR HEAT TREATMENT

An object of the present invention is to provide a glass plate capable of suppressing deformation of a glass product that is subject to load in a heat treatment process at a temperature not more than the glass strain point, such as chemical strengthening and coating. The present invention relates to a glass plate for heat treatment, in which the dimensionless index determined by the following formula is 1.6×10or less, the average viscosity η is log η≦15.1 log Pa·s or less, the relationship between the fictive temperature Tand the annealing point Tis T≧(T+5), and when the plate thickness h of glass is 7×10m or more, the displacement at the load point during the load applying time period is 78 μm or less: Dimensionless index=load F×load applying time period/(average viscosity η×plate thickness h). 4. The glass plate for heat treatment according to claim 2 , wherein the average viscosity η is log η≦15.1 log Pa·s.5. The glass plate for heat treatment according to claim 3 , wherein the average viscosity η is log η≦15.1 log Pa·s.6. The glass plate for heat treatment according to claim 1 , wherein the glass plate has a size of 1 claim 1 ,000 mm or more×1 claim 1 ,000 mm or more.7. The glass plate for heat treatment according to claim 2 , wherein the glass plate has a size of 1 claim 2 ,000 mm or more×1 claim 2 ,000 mm or more.8. The glass plate for heat treatment according to claim 3 , wherein the glass plate has a size of 1 claim 3 ,000 mm or more×1 claim 3 ,000 mm or more.9. The glass plate for heat treatment according to claim 1 , wherein the glass plate is formed by a float process.10. The glass plate for heat treatment according to claim 2 , wherein the glass plate is formed by a float process.11. The glass plate for heat treatment according to claim 3 , wherein the glass plate is formed by a float process. The present invention relates to a glass plate for heat treatment. More specifically, the present invention relates to a glass plate for use in a display/opening ...

COATING FILM-ATTACHED GLASS, COATING FILM-ATTACHED CHEMICALLY STRENGTHENED GLASS, EXTERIOR MEMBER, AND ELECTRONIC DEVICE

Coating film-attached glass includes: glass containing a coloring component; and a colored coating film formed on one major surface of the glass, wherein at least one of an absolute value of a difference between (Δa*(D65−F2)) of the glass and (Δa*(D65−F2)) of the coating film and an absolute value of a difference between (Δa*(A−F2)) of the glass and (Δa*(A−F2)) of the coating film is 0.2 or more, where (Δa*(D65−F2)) is a difference between a chromaticity a* value of reflected light by a D65 light source and a chromaticity a* value of reflected light by an F2 light source in an L*a*b* color system and (Δa*(A−F2)) is a difference between a chromaticity a* value of reflected light by an A light source and the chromaticity a* value of the reflected light by the F2 light source in the L*a*b* color system. 1. A coating film-attached glass comprising , glass containing a coloring component; and a colored coating film formed on one major surface of the glass ,wherein at least one of an absolute value of a difference between (Δa*(D65−F2)) of the glass and (Δa*(D65−F2)) of the coating film and an absolute value of a difference between (Δa*(A−F2)) of the glass and (Δa*(A−F2)) of the coating film is 0.2 or more, {'br': None, 'i': a', 'D', 'F', 'a', 'D', 'a', 'F, 'Δ*(65−2)=*value(65 light source)−*value(2 light source)\u2003\u2003(1), and'}, 'where (Δa*(D65−F2)) is a difference between a chromaticity a* value of reflected light by a D65 light source and a chromaticity a* value of reflected light by an F2 light source in an L*a*b* color system, which difference is expressed by the following expression (1),'} {'br': None, 'i': a', 'A−F', 'a', 'A', 'a', 'F, 'Δ*(2)=*value(light source)−*value(2 light source)\u2003\u2003(2),'}, '(Δa*(A−F2)) is a difference between a chromaticity a* value of reflected light by an A light source and the chromaticity a* value of the reflected light by the F2 light source in the L*a*b* color system, which difference is expressed by the following ...

COATED GLASSES WITH HIGH EFFECTIVE FRACTURE TOUGHNESS

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. ...

GLASS ARTICLE AND PRODUCTION METHOD FOR GLASS ARTICLE

The glass article has a three-dimensional shape. The glass article contains a first surface and at least one second surface opposite to the first surface, and contains a bent part in at least one place of the first surface or the second surface. 139- (canceled)40. An interior member for transportation device , comprising:a glass having a bent part having a first surface and a second surface,wherein the second surface of the glass has a static friction coefficient of 1.0 or less when the static friction coefficient is measured by placing a pseudo-finger contactor on the second surface of the glass and moving the pseudo-finger contactor at a rate of 10 min/second in a state of applying a load of 30 g.41. The interior member according to claim 40 ,wherein the second surface of the glass is on an outer front surface side.42. The interior member according to claim 40 ,wherein the glass is a laminated glass comprising two or more sheets of glass and a resin film between the sheets of glass.43. The interior member according to claim 40 ,wherein the bent part contains at least one site having an average radius of curvature of 30 cm or less.44. The interior member according to claim 40 ,wherein the bent part contains at least one site having a Gaussian curvature of not 0.45. The interior member according to claim 44 ,wherein the Gaussian curvature is negative.46. The interior member according to claim 40 ,wherein the second surface of the glass has a roughness on the surface.47. The interior member according to claim 46 ,wherein the roughness has an antiglare property.48. The interior member according to claim 40 ,wherein the first surface or the second surface of the glass comprises a low reflection film.49. The interior member according to claim 40 ,wherein the second surface of the glass comprises a antifouling film.50. The interior member according to claim 49 ,wherein the antifouling film comprises a fluorine compound.51. The interior member according to claim 40 , ...

Method for achieving a stress profile in a glass

A method for generating various stress profiles for chemically strengthened glass. An alkali aluminosilicate glass is brought into contact with an ion exchange media such as, for example, a molten salt bath containing an alkali metal cation that is larger than an alkali metal cation in the glass. The ion exchange is carried out at temperatures greater than about 420° C. and at least about 30° C. below the anneal point of the glass.

SUPPORTING GLASS SUBSTRATE

A supporting glass substrate has a ratio of a Young's modulus (GPa) to a density (g/cm) that is 37.0 (GPa·cm/g) or more and the ratio has a value larger than a ratio calculation value, the ratio calculation value being a ratio of a Young's modulus (GPa) calculated from a composition to a density (g/cm). The ratio calculation value is represented by the following expression: α=2·Σ{(V·G)/M·X}, where, in the expression, Vis a filling parameter of a metal oxide contained in the supporting glass substrate, Gis a dissociation energy of a metal oxide contained in the supporting glass substrate. Mis a molecular weight of a metal oxide contained in the supporting glass substrate, and Xis a molar ratio of a metal oxide contained in the supporting glass substrate. 1. A supporting glass substrate for manufacturing at least one of a fan out wafer level package and a fan out panel level package , having a ratio ε/d (GPa·cm/g) of a Young's modulus ε (GPa) to a density d (g/cm) that is 37.0 (GPa·cm/g) or more and the ratio ε/d (GPa·cm/g) has a value larger than a ratio calculation value α (GPa·cm/g) , the ratio calculation value α (GPa·cm/g) being a ratio of a Young's modulus ε (GPa) to a density (g/cm) calculated from a composition , wherein{'sub': 2', '2', '3', '2', '2', '3, 'a content of SiOis in a range of 40% to 60%, a content of AlOis in a range of 20% to 30%, a content of MgO is in a range of 20% to 30%, with respect to a total amount of the supporting glass substrate in terms of mol %, and the supporting glass substrate contains only SiO, AlO, and MgO except for inevitable impurities'}{'sub': 2', '2', '3', '2', '2', '3, 'or, a total content of SiOand AlOis in a range of 60% to 75%, a content of MgO is in a range of 20% to 30%, a content of CaO is in a range of 8% to 15%, with respect to a total amount of the supporting glass substrate in terms of mol %, and the supporting glass substrate contains only SiO, AlO, MgO, and CaO except for inevitable impurities'}{'sup': '3', ' ...

FLOAT GLASS FOR CHEMICAL STRENGTHENING

A float glass, which is produced by a float process, has a bottom surface to contact a molten metal during forming and a top surface facing the bottom surface, and is capable of having, after chemical strengthening, a surface compressive stress of 600 MPa or more and a depth of a compressive stress layer of 15 μm or more from a surface thereof. Before chemical strengthening, a difference obtained by subtracting a surface compressive stress value σin the bottom surface from a surface compressive stress value σin the top surface is −0.6 MPa or more and 0.25 MPa or less. 1. A float glass , which is produced by a float process , has a bottom surface to contact a molten metal during forming and a top surface facing the bottom surface , and is capable of having , after chemical strengthening , a surface compressive stress of 600 MPa or more and a depth of a compressive stress layer of 15 μm or more from a surface thereof ,{'sub': CB', 'CT, 'wherein, before chemical strengthening, a difference obtained by subtracting a surface compressive stress value σin the bottom surface from a surface compressive stress value σin the top surface is −0.6 MPa or more and 0.25 MPa or less.'}2. The float glass according to claim 1 , wherein claim 1 , before chemical strengthening claim 1 , the difference obtained by subtracting the surface compressive stress value σin the bottom surface from the surface compressive stress value σin the top surface is less than 0 MPa.3. The float glass according to claim 1 , which has a sheet thickness of 1.5 mm or less.4. The float glass according to claim 2 , which has a sheet thickness of 1.5 mm or less.5. The float glass according to claim 1 , which is an alkali aluminosilicate glass.6. The float glass according to claim 2 , which is an alkali aluminosilicate glass.7. The float glass according to claim 3 , which is an alkali aluminosilicate glass.8. The float glass according to claim 4 , which is an alkali aluminosilicate glass. The present invention ...

METHOD FOR PRODUCING CHEMICALLY TEMPERED GLASS

To provide a method for producing chemically tempered glass, whereby frequency of replacement of the molten salt can be reduced. A method for producing chemically tempered glass, which comprises repeating ion exchange treatment of immersing glass in a molten salt, wherein the glass comprises, as represented by mole percentage, from 61 to 77% of SiO, from 1 to 18% of AlO, from 3 to 15% of MgO, from 0 to 5% of CaO, from 0 to 4% of ZrO, from 8 to 18% of NaO and from 0 to 6% of KO; SiO+AlOis from 65 to 85%; MgO+CaO is from 3 to 15%; and R calculated by the following formula by using contents of the respective components, is at least 0.66: 1. (canceled)2. Glass for chemical tempering , which comprises , as represented by mole percentage based on the following oxides , from 63 to 73% of SiO , from 10.2 to 18% of AlO , from 0 to 15% of MgO , from 0 to 4% of ZrO , from 11 to 16% of NaO , from 0 to 1% of KO and at most 5.6% of BO , and does not contain CaO; the total content of SiOand AlOis from 65 to 85%; the total content of MgO and CaO is from 0 to 15% , and R′ calculated by the following formula by using contents of the respective components , is at least 0.66:{'br': None, 'sub': 2', '2', '3', '2', '2', '2', '2', '3, 'R′=0.029×SiO+0.021×AlO+0.016×MgO−0.004×CaO+0.016×ZrO+0.029×NaO+0×KO+0.028×BO+0.012×SrO+0.026×BaO−2.002'}3. The glass for chemical tempering according to claim 2 , wherein the content of BOis at most 4%.4. The glass for chemical tempering according to claim 2 , wherein the content of NaO is from 11 to 14%.5. The glass for chemical tempering according to claim 2 , wherein no KO is contained.6. The glass for chemical tempering according to claim 4 , wherein no KO is contained.7. The glass for chemical tempering according to claim 2 , wherein the total content of SiO claim 2 , AlO claim 2 , MgO claim 2 , CaO claim 2 , ZrO claim 2 , NaO claim 2 , KO claim 2 , BO claim 2 , SrO and BaO is at least 98.5%.8. The glass for chemical tempering according to claim 2 , ...

GLASS, CHEMICALLY STRENGTHENED GLASS, EXTERIOR MEMBER, AND ELECTRONIC DEVICE

In glass or chemically tempered glass containing a coloring component, when chromaticity of a major surface is measured on the glass in a state of a glass plate with a 0.8 mm thickness, at least one of an absolute value of a difference (Δa*(D65−F2)) and is an absolute value of a difference (Δa*(A−F2)) is 2.10 or more, where the difference (Δa*(D65−F2)) is a difference between a chromaticity a* value of reflected light by a D65 light source and a chromaticity a* value of reflected light by an F2 light source in an L*a*b* color system and the difference (Δa*(A−F2)) is a difference between a chromaticity a* value of reflected light by an A light source and the chromaticity a* value of the reflected light by the F2 light source in the L*a*b* color system. 1. A glass containing a coloring component ,wherein, when chromaticity of a major surface is measured on the glass in a state of a glass plate with a 0.8 mm thickness,at least one of an absolute value of a difference (Δa*(D65−F2)) and an absolute value of a difference (Δa*(A−F2)) is 2.10 or more,where the difference (Δa*(D65−F2)) is a difference between a chromaticity a* value of reflected light by a D65 light source and a chromaticity a* value of reflected light by an F2 light source in an L*a*b* color system, which difference is expressed by the following expression (1),Δa*(D65−F2)=a* value (D65 light source)−a* value (F2 light source) . . . (1), and the difference (Δa*(A−F2)) between a chromaticity a* value of reflected light by an A light source and the chromaticity a* value of the reflected light by the F2 light source in the L*a*b* color system, which difference is expressed by the following expression (2),Δa*(A−F2)=a* value (A light source)−a* value(F2 light source) . . . (2).2. The glass according to claim 1 ,wherein an L* value (F2 light source) of the glass in the L*a*b* color system is within a range of 20 to 90.3. The glass according to claim 1 ,{'sub': 2', '2', '3', '2', '3', '2', '2, 'wherein the glass ...

Cordierite Glass-Ceramic

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.

DISPLAY COVER GLASS AND DISPLAY COVER GLASS FABRICATION METHOD

The present invention provides a cover glass for a display, having high durability to slow cracking and strong abraded strength even though a compressive stress is large and a depth of a compressive stress layer is deep. The present invention relates to a cover glass for a display, in which a depth of a compressive stress layer (DOL) is 30 μm or more, a surface compressive stress is 300 MPa or more, a position (HW) at which a compressive stress is half of a value of the surface compressive stress is a position of 8 μm or more from a glass surface, and the depth of the compressive stress layer (DOL) and the position (HW) at which the compressive stress is half of the value of the surface compressive stress satisfy the following formula: 1. A cover glass for a display , whereina depth of a compressive stress layer DOL is 50 μm or more,a surface compressive stress CS is 400 MPa or more,CS×DOL is 25 MPa·mm or more, andthe cover glass has a HW/DOL ratio of 0.23 or less, where HW is a position at which a compressive stress is half of the surface compressive stress.26-. (canceled)7. The cover glass according to claim 1 , wherein the HW/DOL ratio is 0.05 or more.8. The cover glass according to claim 1 , wherein the surface compressive stress CS is 500 MPa or more.9. The cover glass according to claim 1 , wherein the cover glass has a slow cracking height greater than a glass having the same CS×DOL value and a HW/DOL ratio of greater than 0.23.10. The cover glass according to claim 1 , wherein the cover glass has a composition of 50 to 80% of SiO claim 1 , 2 to 25% of AlO claim 1 , 0 to 10% of LiO claim 1 , 0 to 18% of NaO claim 1 , 0 to 10% of KO claim 1 , 0 to 15% of MgO claim 1 , 0 to 5% of CaO claim 1 , and 0 to 5% of ZrO claim 1 , in terms of mol %.11. The cover glass according to claim 1 , wherein claim 1 , in terms of mol % claim 1 ,{'sub': 2', '2', '3', '2', '2', '2', '2', '2, 'the cover glass has a composition of 61 to 72% of SiO, 8 to 17% of AlO, 6 to 18% of LiO, 2 ...

CHEMICALLY STRENGTHENED GLASS

The present invention relates to a chemically strengthened glass satisfying A[MPa] of 600 or more, A[MPa] of 50 or more, B[μm] of 6 or less, B[μm] of 10% or more of t [μm], C [MPa] of −30 or less, and A/B[MPa/μm] of 100 or more when the chemically strengthened glass has a thickness t [μm] and a profile of a stress value [MPa] at a depth x [μm] from a glass surface is approximated by an error least-squares method in a region of 0Aand BAand B Подробнее

GLASS-BASED ARTICLES HAVING HIGH STRESS MAGNITUDE AT DEPTH

Glass-based articles have a first surface and a second surface opposing the first surface defining a thickness (t) and a center between the first surface and the second surface, the glass-based article containing LiO, ion-exchanged potassium and ion-exchanged sodium. The glass-based article has a stress profile including a hump stress region extending from the first surface (or a point below the first surface) to an apex in a range of 0.001·t and 0.1t. Compressive stress at the apex is from 25 to 750 MPa. The hump region comprises an area of increasing stress and an area of decreasing stress. Depth of compression is from 0.1·t to 0.25·t. A tensile stress region extends from the depth of compression to a maximum tensile stress. 128-. (canceled)29. A glass-based article comprising:{'sub': '2', 'a first surface and a second surface opposing the first surface defining a thickness (t) and a center between the first surface and the second surface, the glass-based article comprising LiO, ion-exchanged potassium and ion-exchanged sodium; and'}a stress profile comprising a hump stress region extending from the first surface or a point below the first surface to an apex in a range of 0.001·t and 0.1·t, a compressive stress at the apex in a range of 25 MPa and 750 MPa, wherein at least one point of the stress profile of the hump stress region between the first surface and the apex comprises a tangent having a slope with a value from 25 MPa/micrometer to 500 MPa/micrometer, a decreasing stress region extending from the apex that decreases such that at least one point of the stress profile of the decreasing stress region extending from the apex toward the center comprises a tangent having a slope with a value from −20 MPa/micrometer to −200 MPa/micrometer until the decreasing stress region reaches a depth of compression where the glass-based article has a stress value of zero, the depth of compression being in a range of 0.1·t and 0.25·t, and a tensile stress region extending ...

DISPLAY COVER GLASS AND DISPLAY COVER GLASS FABRICATION METHOD

The present invention provides a cover glass for a display, having high durability to slow cracking and strong abraded strength even though a compressive stress is large and a depth of a compressive stress layer is deep. The present invention relates to a cover glass for a display, in which a depth of a compressive stress layer (DOL) is 30 μm or more, a surface compressive stress is 300 MPa or more, a position (HW) at which a compressive stress is half of a value of the surface compressive stress is a position of 8 μm or more from a glass surface, and the depth of the compressive stress layer (DOL) and the position (HW) at which the compressive stress is half of the value of the surface compressive stress satisfy the following formula: 1: A cover glass for a display , whereina depth of a compressive stress layer DOL is 50 μm or more,a surface compressive stress CS is 300 MPa or more,the cover glass has a HW/DOL ratio of 0.23 or less, where HW is a position at which a compressive stress is half of the surface compressive stress,the cover glass has a three-point bending strength of more than 43 MPa, andthe cover glass has a slow cracking height of 35 cm or more measured using a stainless steel sphere having a weight of 4 g, or a slow cracking height of 7.4 cm or more measured using a stainless steel sphere having a weight of 28 g.26-. (canceled)7: The cover glass according to claim 1 , wherein the HW/DOL ratio is 0.05 or more.8: The cover glass according to claim 1 , wherein the surface compressive stress CS is 500 MPa or more.9: The cover glass according to claim 1 , wherein the cover glass has a slow cracking height greater than a glass having the same CS×DOL value and a HW/DOL ratio of greater than 0.23.10: The cover glass according to claim 1 , wherein the cover glass has a composition of 50 to 80% of SiO claim 1 , 2 to 25% of AlO claim 1 , 0 to 10% of LiO claim 1 , 0 to 18% of NaO claim 1 , 0 to 10% of KO claim 1 , 0 to 15% of MgO claim 1 , 0 to 5% of CaO claim 1 ...

INTERMEDIATE TO HIGH CTE GLASSES AND GLASS ARTICLES COMPRISING THE SAME

Intermediate to high CTE glass compositions and laminates formed from the same are described. The glasses described herein have properties, such as liquidus viscosity or liquidus temperature, which make them particularly well suited for use in fusion forming processes, such as the fusion down draw process and/or the fusion lamination process. Further, the glass composition may be used in a laminated glass article, such as a laminated glass article formed by a fusion laminate process, to provide strengthened laminates via clad compression as a result of CTE mismatch between the core glass and clad glass. 1. A glass composition comprising:{'sub': '2', 'about 60 mol % to about 75 mol % SiO'}{'sub': 2', '3, 'about 2 mol % to about 11 mol % AlO'}{'sub': 2', '3, '0 mol % to about 11 mol % BO'}{'sub': '2', '0 mol % to about 1 mol % NaO'}{'sub': '2', 'about 1 mol % to about 18 mol % KO'}0 mol % to about 7 mol % MgO0 mol % to about 9 mol % CaOabout 1 mol % to about 8 mol % SrO,0 mol % to about 4 mol % BaO, andabout 3 mol % to about 16 mol % R′O, wherein R′O comprises the mol % of MgO, CaO, SrO,and BaO in the composition.2. The glass composition of claim 1 , wherein the composition comprises:{'sub': '2', 'about 65 mol % to about 75 mol % SiO'}{'sub': 2', '3, 'about 5 mol % to about 11 mol % AlO'}{'sub': 2', '3, 'about 4 mol % to about 11 mol % BO'}{'sub': '2', '0 mol % to about 0.5 mol % NaO'}{'sub': '2', 'about 2 mol % to about 13 mol % KO'}0 mol % to about 7 mol % MgO0 mol % to about 9 mol % CaOabout 2 mol % to about 6 mol % SrO,0 mol % to about 1 mol % BaO, andabout 3 mol % to about 16 mol % R′O, wherein R′O comprises the mol % of MgO, CaO, SrO, and BaO in the composition.3. The glass composition of claim 2 , wherein the composition comprises:{'sub': '2', 'about 65 mol % to about 73 mol % SiO'}{'sub': 2', '3, 'about 5 mol % to about 11 mol % AlO'}{'sub': 2', '3, 'about 4 mol % to about 11 mol % BO'}{'sub': '2', '>0 mol % to about 0.5 mol % NaO'}{'sub': '2', 'about 2 mol % ...

LASER WELDING OF HIGH THERMAL EXPANSION GLASSES AND GLASS-CERAMICS

Disclosed herein are methods for welding a first substrate and a second substrate, the method comprising bringing the first and second substrates into contact to form a substrate interface, and directing a laser beam operating at a predetermined wavelength through the second substrate onto the substrate interface, wherein the first substrate absorbs light from the laser beam in an amount sufficient to form a weld between the first substrate and the second substrate. The disclosure also relates to glass and/or glass-ceramic packaging and OLED display produced according to the methods disclosed herein. 1. A method for welding a first and second substrate comprising:(a) bringing the first and second substrates into contact to form a substrate interface;(b) directing a laser beam operating at a predetermined wavelength through the second substrate onto the substrate interface;wherein the first substrate absorbs light from the laser beam in an amount sufficient to form a weld between the first substrate and the second substrate;{'sup': −1', '−1, 'wherein the first substrate has an absorption at the predetermined wavelength of greater than about 10 cmand the second substrate has an absorption at the predetermined wavelength of less than about 1 cm; and'}wherein at least one of the first and second substrates has a coefficient of thermal expansion greater than about 5 ppm/° C.2. The method of claim 1 , wherein the first and/or second substrates are chosen from glasses claim 1 , ceramics claim 1 , and glass-ceramics.3. The method of claim 2 , wherein the first and/or second substrates are chosen from soda-lime silicate claim 2 , aluminosilicate claim 2 , alkali-aluminosilicate claim 2 , borosilicate claim 2 , alkali-borosilicate claim 2 , aluminoborosilicate claim 2 , and alkali-aluminoborosilicate glasses and glass-ceramics.4. The method of claim 1 , wherein the first and/or second substrates are chosen from pre-stressed laminates and chemically strengthened and/or ...

STRENGTHENED GLASS WITH DEEP DEPTH OF COMPRESSION

Chemically strengthened glass articles having at least one deep compressive layer extending from a surface of the article to a depth of at least about 45 μm within the article are provided. In one embodiment, the compressive stress profile includes a single linear segment extending from the surface to the depth of compression DOC. Alternatively, the compressive stress profile includes two linear portions: the first portion extending from the surface to a relatively shallow depth and having a steep slope; and a second portion extending from the shallow depth to the depth of compression. The strengthened glass has a 60% survival rate when dropped from a height of 80 cm in an inverted ball drop test and a peak load at failure of at least 10 kgf as determined by abraded ring-on-ring testing. Methods of achieving such stress profiles are also described. 149-. (canceled)50. A glass article having a thickness t , the glass article comprising: a. the compressive layer extends from the surface to a depth of compression DOC, wherein DOC≥0.1 when t<0.5 mm and DOC≥50 um when t≥0.5 mm, and wherein the compressive layer has a compressive stress profile; and', [{'sub': b', 'b', 'b, 'i. a first portion b extending from the surface to a depth dand having a an average slope m, wherein −40 MPa/μm≥m≥−200 MPa/μm,'}, {'sub': c', 'c, 'ii. a second portion c extending from a depth dto the DOC and having an average slope m, and'}, {'sub': b', 'c', 'b', 'c, 'iii. a transition region extending from dto dhaving a slope that transitions from slope mto slope m.'}], 'b. the compressive stress profile comprises], 'a compressive layer having a compressive stress CS in a range from about 500 MPa up to about 1200 MPa at a surface of the glass article, wherein51. The glass article of claim 50 , wherein −40 MPa/μm≥m≥−120 MPa/μm.52. The glass article of claim 50 , wherein thickness t is in a range from about 0.15 mm up to about 2.0 mm.53. The glass article of claim 50 , wherein the glass article ...

CHEMICALLY STRENGTHENED GLASS, AND GLASS FOR CHEMICAL STRENGTHENING

A glass for chemical strengthening contains, in mole percentage on an oxide basis, 58 to 80% of SiO, 13 to 18% of AlO, 0 to 5% of BO, 0.5 to 4% of PO, 4 to 10% of LiO, 5 to 14% of Na, 0 to 2% of KO, 0 to 11% of MgO, 0 to 5% of CaO, 0 to 20% of SrO, 0 to 15% of BaO, 0 to 10% of ZnO, 0 to 1% of TiO, and 0 to 2% of ZrO. A value of X is 30000 or more. The value of X is calculated based on the formula, X=SiO×329+AlO×786+BO×627+PO×(−941)+LiO×927+NaO×47.5+KO×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO×51.8, by using the contents in mole percentage on an oxide basis of components. 1. A glass for chemical strengthening , comprising , in mole percentage on an oxide basis , 54 to 62% of SiO , 12 to 20% of AlO , 0.5 to 5% of BO , 0 to 4% of PO , 5 to 16% of LiO , 5 to 14% of NaO , 0 to 2% of KO , 0 to 10% of MgO , 0 to 1% of CaO , 0 to 1% of SrO , 0 to 1% of BaO , 0 to 5% of ZnO , 0 to 1% of TiO , and 0 to 4% of ZrO ,{'sub': 2', '2', '3', '2', '3', '2', '5', '2', '2', '2', '2, 'claim-text': {'br': None, 'sub': 2', '2', '3', '2', '3', '2', '5', '2', '2', '2', '2, 'X=SiO×329+AlO×786+BO×627+PO×(−941)+LiO×927+NaO×47.5+KO×(−371)+MgO×1230+CaO×1154+SrO×733+ZrO×51.8.'}, 'wherein a value of X is 40,000 or more, the value of X being calculated based on the following formula by using contents in mole percentage on an oxide basis of components of SiO, AlO, BO, PO, LiO, Na, KO, MgO, CaO, SrO, BaO, and ZrO2. The glass for chemical strengthening according to claim 1 , wherein a value of Y is 0.7 or more claim 1 , the value of Y being calculated based on the following formula by using contents in mole percentage on an oxide basis of components of SiO claim 1 , AlO claim 1 , BO claim 1 , PO claim 1 , LiO claim 1 , Na claim 1 , KO claim 1 , MgO claim 1 , CaO claim 1 , SrO claim 1 , BaO claim 1 , and ZrO:{'br': None, 'sub': 2', '2', '3', '2', '3', '2', '5', '2', '2', '2', '2, 'Y=SiO×0.00884+AlO×0.0120+BO×(−0.00373)+PO×0.000681+LiO×0.007 35+NaO×(−0.00234)+KO×(−0.00608)+MgO×0.0105+CaO×0.00789+SrO×0.00752+ ...

ZIRCON COMPATIBLE, ION EXCHANGEABLE GLASS WITH HIGH DAMAGE RESISTANCE

An ion exchangeable glass having a high degree of resistance to damage caused by abrasion, scratching, indentation, and the like. The glass comprises alumina, BO, and alkali metal oxides, and contains boron cations having three-fold coordination. The glass, when ion exchanged, has a Vickers crack initiation threshold of at least 10 kilogram force (kgf). 1. A glass comprising:{'sub': '2', '66-74 mol % SiO;'}{'sub': '2', '9-20 mol % NaO;'}{'sub': 2', '3, '9-22 mol % AlO;'}{'sub': 2', '3, 'at least 2.7 mol % BO;'}at least 0.1 mol % MgO,{'sub': 2', '2', '3', '2', '3, 'wherein RO (mol %)+CaO (mol %)+SrO (mol %)+BaO (mol %)−AlO(mol %)−BO(mol %)<0 mol %.'}2. The glass of claim 1 , wherein the glass has a zirconia breakdown temperature that is equal to the temperature at which the glass has a viscosity in a range from about 30 kPoise to about 40 kPoise.3. The glass of claim 1 , wherein the glass comprises:{'sub': '2', 'from about 10 mol % to about 20 mol % NaO;'}{'sub': '2', 'from 0 mol % to about 5 mol % KO;'}0.1 mol %≦MgO≦6 mol %;0 mol %≦ZnO≦6 mol %; and0 mol %≦CaO (mol %)+SrO (mol %)+BaO (mol %)≦2 mol %.4. The glass of claim 1 , wherein the glass contains less than about one inclusion per kilogram of glass claim 1 , the inclusion having a diameter of at least 50 μm.5. The glass of claim 1 , wherein BO(mol %)−(RO (mol %)−AlO(mol %))≦4.5 mol %.6. The glass of claim 1 , wherein the glass comprises at least about 10 mol % RO.7. The glass of claim 1 , wherein the glass is substantially free of LiO.8. The glass of claim 1 , wherein BO(mol %)−(RO (mol %)−AlO(mol %))≧3 mol %.9. The glass of claim 1 , wherein the glass comprises at least one of CaO claim 1 , BaO claim 1 , and SrO.10. The glass of claim 1 , wherein 3 mol %≦BO(mol %)−(RO (mol %)−AlO(mol %))≦4.5 mol %.11. The glass of claim 1 , wherein the glass comprises 3-4.5 mol % BO.12. The glass of claim 1 , wherein the glass comprises 2.7-4.5 mol % BO.13. The glass of claim 1 , wherein the glass comprises 3-10 mol % BO.14. The ...

Glass article and light guide

To provide a highly transmissive glass and a light guide that allow high internal transmittance of plate glass to be maintained and the internal transmittance spectrum of the plate to be flattened without lowering the redox of iron to a value equal to or more than a certain value. This glass article comprises a glass which includes 1 to 80 mass ppm of total iron oxide (t-Fe 2 O 3 ) in terms of Fe 2 O 3 , has a redox of iron of 0 to 50% and includes 0.01 to 4.0 mass ppm of NiO. The glass article and the light guide comprising the glass article are characterized in that an A value of the internal transmittance spectrum flatness is 0.83 or more.

TEXTURED GLASS ARTICLES AND METHODS OF MAKING SAME

A textured glass article includes: a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % AlO, the body having at least a first surface; and a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 μm and less than or equal to 350 μm, wherein the plurality of facets of each polyhedral surface feature converge toward one another. 1. A textured glass article comprising:{'sub': ['2', '3'], '#text': 'a body comprising an aluminosilicate glass comprising greater than or equal to 16 wt % AlO, the body having at least a first surface; and'}a plurality of polyhedral surface features extending from the first surface, each of the plurality of polyhedral surface features comprising a base on the first surface, a plurality of facets extending from the first surface, and a surface feature size at the base greater than or equal to 10 μm and less than or equal to 350 μm, wherein the plurality of facets of each polyhedral surface feature converge toward one another.2. The textured glass article of claim 1 , wherein the plurality of facets of each polyhedral surface feature converge toward one another to form at least one apex claim 1 , the at least one apex being sharp claim 1 , rounded claim 1 , or truncated.3. The textured glass article of claim 1 , wherein the textured glass article has a surface roughness Ra greater than or equal to 2 μm.4. The textured glass article of claim 1 , wherein the textured glass article has a transmittance haze greater than or equal to 40%.5. The textured glass article of claim 1 , wherein the base of each of the plurality of polyhedral surface features comprises at least three sides claim 1 , at least one side converging toward at least another side.6. The textured glass article of ...

STRENGTHENED GLASS II

There is an article of manufacture. The article includes an aluminosilicate glass object. The glass object is characterized by having a surface compression of at least 100,000 psi at a surface with a case depth of at least 65 microns below the surface, wherein the glass object is further characterized as including at least some amounts of Li2O, Na2O and K2O. 1. An article of manufacture comprising: {'sub': 2', '2', '2, 'wherein the glass object is further characterized as including at least some amounts of LiO, NaO and KO.'}, 'a strengthened aluminosilicate glass object characterized by having a surface compression of at least 100,000 psi at a surface with a case depth of at least 65 microns below the surface,'}2. The article of claim 1 ,wherein the glass object has a case depth of at least at 75 microns below the surface.3. The article of claim 1 ,wherein the glass object has a case depth of at least at 120 microns below the surface.4. The article of claim 1 ,wherein the glass object has a case depth of at least at 175 microns below the surface.5. The article of claim 1 ,wherein the glass object has a case depth of at least at 250 microns below the surface.6. The article of claim 1 ,wherein the glass object has a case depth of at least at 300 microns below the surface.7. The article of claim 1 ,wherein the glass object has a case depth of at least at 400 microns below the surface.8. The article of claim 1 ,wherein the glass object has a case depth of at least at 500 microns below the surface.9. The article of claim 1 ,wherein the glass object has a case depth of at least at 550 microns below the surface.10. The article of claim 1 ,{'sub': 2', '2, 'wherein the glass object includes a composition with varying amounts of NaO and KO at different depths below the surface of the glass object.'}11. The article of claim 1 ,{'sub': 2', '3, 'wherein the glass object includes 7 to 30 weight % AlO.'}12. The article of claim 1 ,{'sub': '2', 'wherein the glass object includes ...

Lithium Containing Glass with High Oxidized Iron Content and Method of Making Same

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. 1. (canceled)3. The glass composition according to claim 2 , wherein glass composition comprises cerium oxide in the range of 0.02 to 0.45 wt %.4. The glass composition according to claim 2 , comprising FeO in the range of from 0.001-0.010 wt %.5. The glass composition according to claim 2 , wherein the redox ratio is in the range of from 0.005-0.10.6. A viewing window for infrared equipment comprising glass formed from the glass composition according to .7. The viewing window of claim 6 , wherein the infrared equipment comprises infrared night goggles and/or scopes.8. A device for viewing radiated infrared energy claim 2 , the device comprising a housing having at least one passageway claim 2 , the passageway having a first open end and a second open end claim 2 , a lens system for viewing radiated infrared energy claim 2 , a chemically tempered ballistic glass lens mounted adjacent to one end of the passageway claim 2 , the ballistic glass lens comprising a first surface claim 2 , an opposite second surface and a ...

Curved laminated glass and manufacturing method for curved laminated glass

The present disclosure provides a curved laminated glass including a curved soda lime glass and a curved thin plate glass provided on a concave surface of the curved soda lime glass, in which a thickness of the curved soda lime glass is larger than a thickness of the curved thin plate glass, and compressive stress is formed on a surface opposite to a surface of the curved thin plate glass adjacent to the curved soda lime glass.

CHEMICALLY STRENGTHENED GLASS

The purpose of the present invention is to provide a chemically strengthened glass in which reduction in glass surface strength is effectively suppressed even without performing a polishing treatment after a prolonged chemical strengthening treatment has been conducted at a high temperature. The present invention relates to a chemically strengthened glass having a specific glass composition, wherein: the surface roughness (Ra) is a specific value or greater; the compressive stress layer depth of a surface layer is a specific value or greater; by setting the hydrogen concentration in the glass surface layer to be within a specific range, the surface strength of the glass is dramatically improved even without performing an etching treatment using hydrofluoric acid or polishing the glass surface after a prolonged chemical strengthening treatment has been conducted at a high temperature. 1. A chemically strengthened glass comprising a compressive stress layer that is formed in a surface layer of the glass by an ion exchange method , wherein:the glass has a surface roughness (Ra) of 0.50 nm or more;the glass has a depth of the compressive stress layer of 55 μm or more;{'sub': 2', '2', '3', '2', '2', '5, 'the glass has a composition comprising, in mole percentage on an oxide basis, 55.5 to 76.5% of SiO, 5 to 20% of AlO, 8 to 25% of NaO and 0.1% or more of PO;'}a hydrogen concentration Y1 in a region of a depth X from an outermost surface of the chemically strengthened glass satisfies Expression (I) below at X1=0.10 to 0.25 (μm);a hydrogen concentration Y2 in a region of the depth X from the outermost surface of the chemically strengthened glass satisfies Expression (II) below at X2=0.25 to 0.4 (μm); and{'sup': '2', 'claim-text': {'br': None, 'i': Y', 'a', 'X', 'b, 'sub': 1', '1, '1=1+\u2003\u2003(I),'}, 'a surface strength F (N) measured on the conditions below by a ball-on-ring test satisfies a relation of F≥1200×twith respect to a sheet thickness t (mm) of a sheet of ...

FRONT GLASS PLATE FOR STACKED STRUCTURE AND STACKED STRUCTURE

A front glass plate for a stacked structure includes greater than or equal to 5 mol % of AlO, in terms of an oxide, as a component, 50% crack initiation load of the front glass plate being greater than or equal to 0.5 kg. 1. A front glass plate for a stacked structure , the front glass plate comprising:{'sub': 2', '3, 'greater than or equal to 5 mol % of AlO, in terms of an oxide, as a component,'}50% crack initiation load of the front glass plate being greater than or equal to 0.5 kg.2. The front glass plate according to claim 1 , further comprising MgO.3. The front glass plate according to claim 2 ,wherein greater than or equal to 5 mol % of MgO, in terms of an oxide, is included.4. The front glass plate according to claim 1 , further comprising BO.5. The front glass plate according to claim 1 ,wherein energy transmittance of the front glass plate is greater than or equal to 90.4%.6. The front glass plate according to claim 1 ,wherein a haze value of the front glass plate after having performed a sand blast process for three seconds is less than or equal to 15%.7. The front glass plate according to claim 1 ,wherein at least a surface of the front glass plate is chemical strengthened.8. A stacked structure comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'the front glass plate according to ; and'}a functional component provided at a back surface of the front glass plate.9. The stacked structure according to claim 8 ,wherein the functional component is at least one selected from a group consisting of an intermediate film, a solar cell and a reflection layer.10. The stacked structure according to claim 8 , further comprising:a second glass plate provided at a surface of the functional component opposite to the front glass plate.11. The stacked structure according to claim 10 ,wherein a thickness of the front glass plate is less than or equal to a thickness of the second glass plate.12. The stacked structure according to claim 10 ,wherein the energy ...

GLASS ARTICLE AND PRODUCTION METHOD FOR GLASS ARTICLE

The glass article has a three-dimensional shape. The glass article contains a first surface and at least one second surface opposite to the first surface, and contains a bent part in at least one place of the first surface or the second surface. 1. A glass article having a three-dimensional shape , comprising a first surface and at least one second surface opposite to the first surface , and comprising a bent part in at least one place of the first surface or the second surface.2. The glass article according to claim 1 , wherein the first surface and the second surface each have a bent part in at least one place thereof.3. The glass article according to claim 1 , further comprising at least one edge surface connecting the first surface and the second surface claim 1 ,wherein the edge surface has an outline of a three-dimensional curve.4. The glass article according to claim 1 , wherein the bent part contains at least one site having an average radius of curvature of 30 cm or less.5. The glass article according to claim 1 , wherein the bent part contains at least one site having a Gaussian curvature of not 0.6. The glass article according to claim 5 , wherein the Gaussian curvature is negative.7. The glass article according to claim 1 , which is mounted on a transportation device.8. The glass article according to claim 7 , which is used for an interior member of the transportation device.9. The glass article according to claim 1 , wherein at least a part of the first surface or the second surface of the glass article is supported by a support member.10. The glass article according to claim 9 , wherein at least one place of the bent part is supported by the support member facing the bent part.11. The glass article according to claim 9 , wherein the support member supports the bent part so that the bent part is movable.12. The glass article according to claim 9 , wherein the edge surface connecting the first surface and the second surface is composed of a bent part ...

Inorganic oxide articles with thin, durable anti-reflective structures

An article that includes: an inorganic oxide substrate having opposing major surfaces; and an optical film structure disposed on a first major surface of the substrate, the optical film structure comprising one or more of a silicon-containing oxide, a silicon-containing nitride and a silicon-containing oxynitride and a physical thickness from about 50 nm to less than 500 nm. The article exhibits a hardness of 8 GPa or greater measured at an indentation depth of about 100 nm or a maximum hardness of 9 GPa or greater measured over an indentation depth range from about 100 nm to about 500 nm, the hardness and the maximum hardness measured by a Berkovich Indenter Hardness Test. Further, the article exhibits a single-side photopic average reflectance that is less than 1%.

HIGH STRENGTH ULTRATHIN GLASS AND METHOD OF MAKING THE SAME

An ultrathin glass article has a thickness of less than or equal to 0.5 mm. The glass has a low TTV and a large threshold diffusivity. The glass has a working point Tof more than 1100° C. and a linear thermal expansion coefficient CTE of more than 6*10−6/° C. in the temperature range between 25° C. and 300° C. A method for producing the article as well as the use of the article is also provided. The glass article can be chemically strengthened and forms surface compressive stress layers on surfaces and center tension layer in the center. The toughened ultrathin glass sheet is more flexible and has extraordinary thermal shock resistance which makes it easier to handle for processing. 1. An article , comprising:{'sub': '4', 'sup': −6', '2, 'claim-text': less than 40 μm when the thickness is more than 200 μm;', 'less than 20% of the thickness when the thickness is between 50 μm and 200 μm; or', 'at most 10 μm when the thickness is less than 50 μm;, 'a chemically toughenable glass having a thickness less than or equal to 0.5 mm, the glass having a working point Tof more than 1100° C. and the glass in the temperature range between 25° C. and 300° C. has an average linear thermal expansion coefficient CTE of more than 6*10/° C., the glass having a threshold diffusivity D of at least 1.5 μm/hour, the glass having a total thickness variation (TTV) in an area of 0.4 m*0.5 m of2. The article according to claim 1 , wherein the thickness is less than or equal to 400 μm.3. The article according to claim 1 , wherein the glass has a working point Tlower than 1350° C.4. The article according to claim 1 , wherein the CTE is higher than 7*10/° C.5. The article according to claim 1 , wherein a hot-forming difficulty coefficient of the glass claim 1 , defined by T*CTE claim 1 , is in the range of 8060*10to 14000*10.6. The article according to claim 1 , wherein an inverse stiffness of the glass is in the range of 0.032 to 0.0355 (s/mm).7. The article according to claim 1 , wherein the ...

ION-EXCHANGEABLE GLASS WITH HIGH SURFACE COMPRESSIVE STRESS

A glass article comprising an alkali aluminosilicate glass that is formable by down-draw processes for example slot- and fusion-draw to thicknesses of 125 μm or less and is capable of being chemically strengthened by ion-exchange to achieve a compressive stress at its surface of at least 950 MPa, in some embodiments at least about 1000 MPa, and in other embodiments at least about 1100 MPa. The high surface compressive stress allows the glass to retain net compression and thus contain surface flaws when the glass is subjected to bending around a tight radius. The glass may be used in foldable display applications. 1. A glass article comprising an alkali aluminosilicate glass , the alkali aluminosilicate glass comprising LiO , NaO , MgO , and ZnO , wherein Li2O (mol %)/RO (mol %)≥0.2 , where RO═LiO+NaO+KO+RbO+CsO , and wherein the alkali aluminosilicate glass is free of POand is ion-exchangeable.2. The glass article of claim 1 , wherein the alkali aluminosilicate glass has a thickness t of up to about 1 mm and is ion-exchangeable to achieve a compressive layer extending from a surface of the alkali aluminosilicate glass to a depth of layer of up to about 30 μm and a maximum compressive stress of at least about 950 MPa at the surface.3. The glass article of claim 2 , wherein the thickness t is about 125 μm or less.4. The glass article of claim 3 , wherein the depth of layer is about 0.25 t or less.5. The glass article of claim 4 , wherein the depth of layer is about 10 μm or less.6. The glass article of claim 3 , wherein the compressive stress is at least about 1000 MPa.7. The glass article of claim 4 , wherein the alkali aluminosilicate glass has an effective depth of layer of less than or equal to about 1 μm when the alkali aluminosilicate glass is bent to a bend radius of about 3.6 mm or less.8. The glass article of claim 1 , wherein the alkali aluminosilicate glass has a liquidus viscosity of at least about 500 kP.9. The glass article of claim 1 , wherein the ...

Chemically strengthened glass

The present invention relates to a chemically strengthened glass, in which CT1 and CT5 satisfy CT5/CT1≤0.85, the CT1 satisfies CT1>−38.7×ln(t/1000)+48.2 [MPa] and an internal energy density rE satisfies rE≤23.3×t/1000+15 [kJ/m2]. CS is a surface compressive stress value [MPa], σ (x) is a compressive stress value [MPa] at a position x in a depth direction, DOL is a compressive stress depth [μm], and t is a sheet thickness [μm].

METHODS FOR REDUCING CHROMIUM OXIDATION STATE DURING PROCESSING OF GLASS COMPOSITIONS

Glass manufacturing methods disclosed herein include delivering a molten glass to a melting vessel, and melting the batch materials to produce a molten glass comprising less than about 20 ppm CrO. Glass articles produced by these methods are also disclosed herein. 1. A glass manufacturing method comprising:{'sub': '3', 'melting batch materials in a melting vessel to produce a molten glass, the molten glass comprising less than about 20 ppm of CrO;'}{'sub': '3', 'wherein CrOcontent in the molten glass is reduced by controlling at least one of the makeup of the batch materials or the conditions in the melting vessel to reduce the oxidation state of chromium present in the batch materials.'}2. The method of claim 1 , wherein the oxidation state is reduced from Cr to Cr.3. The method of claim 1 , wherein a first ratio Cr/Cr of the batch materials is greater than a second ratio Cr/Cr of the molten glass article.4. The method of claim 3 , wherein the second ratio Cr/Cr of the molten glass is less than 1.5. The method of claim 1 , wherein the molten glass comprises less than about 10 ppm of CrO.6. The method of claim 1 , wherein the molten glass comprises less than about 1 ppm of CrO.7. The method of claim 1 , wherein controlling the makeup of the batch materials comprises selecting the glass composition to provide batch materials comprising an optical basicity of less than about 0.6.8. The method of claim 1 , wherein controlling the makeup of the batch materials comprises including at least one organic reducing agent in the batch materials.9. The method of claim 8 , wherein the at least one organic reducing agent is chosen from fatty acids and salts thereof.10. The method of claim 1 , wherein controlling the melting conditions comprises at least one of:(a) maintaining a pre-melt bath target temperature with a temperature fluctuation of +/−10° C.; or(b) maintaining an atmosphere within the melting vessel comprising an ideal gas/oxygen stoichiometric ratio with ...

Mixed Oxide Materials for Helium Leak Tight, Oxidation Resistant and High Strength Joints Between High Temperature Engineering Materials

A high strength joint material. A material for a joint between a ceramic body and a metal body. A material for a joint between a ceramic body and a ceramic body.

GLASS USED IN OPTICAL ELEMENT FOR CONCENTRATING PHOTOVOLTAIC POWER GENERATION APPARATUS, OPTICAL ELEMENT FOR CONCENTRATING PHOTOVOLTAIC POWER GENERATION APPARATUS USING GLASS, AND CONCENTRATING PHOTOVOLTAIC POWER GENERATION APPARATUS

Provided are a glass which is used in an optical element for a concentrating photovoltaic power generation apparatus, has excellent weather resistance, and can be easily processed into a complicated shape; an optical element for a concentrating photovoltaic power generation apparatus using the glass; and a concentrating photovoltaic power generation apparatus. The glass used in an optical element for a concentrating photovoltaic power generation apparatus contains, in % by mass, 30 to 80% SiO, 0 to 40% BO, 0 to 20% AlO, not less than 0.1% LiO, and not less than 0.1% ZrO. 1. A glass used in an optical element for a concentrating photovoltaic power generation apparatus , the glass containing , in % by mass , 30 to 80% SiO , 0 to 40% BO , 0 to 20% AlO , not less than 0.1% LiO , and not less than 0.1% ZrO.2. The glass according to claim 1 , further containing claim 1 , in % by mass claim 1 , 0 to 20% CaO claim 1 , 0 to 20% SrO claim 1 , 0 to 20% BaO claim 1 , 0 to 20% MgO claim 1 , 0 to 20% ZnO claim 1 , 0 to 20% NaO claim 1 , 0 to 20% KO claim 1 , and 0 to 10% TiO.3. The glass according to claim 1 , further containing claim 1 , in % by mass claim 1 , 0 to 20% BiO+LaO+GdO+TaO+TiO+NbO+WO.4. The glass according to claim 1 , further containing claim 1 , in % by mass claim 1 , 0 to 5% CeO+PrO+NdO+EuO+TbO+ErO+YO+YbO.5. The glass according to claim 1 , containing not more than 0.1% FeO.6. The glass according to claim 1 , the glass being substantially free of lead component claim 1 , arsenic component and fluorine component.7. The glass according to claim 1 , having an average linear coefficient of thermal expansion of 120×10/° C. or less at 30 to 300° C.8. The glass according to claim 1 , wherein the temperature corresponding to a viscosity of 10Pa·s is 1300° C. or less.9. The glass according to claim 1 , having a softening point of 750° C. or less.10. The glass according to claim 1 , wherein the glass with a thickness of 10 mm has an internal transmittance of not less than ...

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

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 ...

CHEMICALLY STRENGTHENED GLASS

The present invention relates to a chemically strengthened glass, in which CTand CTsatisfy CT/CT≦0.85, the CTsatisfies CT>−38.7×ln(t/1000)+48.2 [MPa] and an internal energy density rE satisfies rE≦23.3×t/1000+15 [kJ/m]. CS is a surface compressive stress value [MPa], σ (x) is a compressive stress value [MPa] at a position x in a depth direction, DOL is a compressive stress depth [μm], and t is a sheet thickness [μm]. 2. The chemically strengthened glass according to claim 1 , wherein the surface compressive stress CS is 600 MPa or more.3. The chemically strengthened glass according to claim 1 , wherein the compressive stress depth DOL is 30 μm or more.4. The chemically strengthened glass according to claim 1 , wherein the sheet thickness t is 1500 μm or less.5. The chemically strengthened glass according to claim 1 , wherein a position HW having a compressive stress being a half value of the surface compressive stress CS is a position less than 8 μm from a surface of the glass.6. The chemically strengthened glass according to claim 1 , wherein a compressive stress value in a depth of a half value of the compressive stress depth DOL is 40% or less of the surface compressive stress CS.7. The chemically strengthened glass according to claim 1 , wherein the internal tensile stress CTsatisfies CT>−38.7×ln(t/1000)+48.2 [MPa].8. The chemically strengthened glass according to claim 1 , wherein the internal tensile stress CTis 1.1 times or more a CTvalue obtained by the following formula (2):{'br': None, 'i': CT', 't/, 'sub': 'limit', '=−38.7×ln(1000)+48.2\u2003\u2003(2),'}wherein t is a sheet thickness [μm] of the chemically strengthened glass.9. The chemically strengthened glass according to claim 1 , wherein the internal tensile stress CTis 1.1 times or more a CTvalue obtained by the following formula (4):{'br': None, 'i': CT', 't/, 'sub': 'limit', '=−36.7×ln(1000)+48.7\u2003\u2003(4),'}wherein t is a sheet thickness [μm] of the chemically strengthened glass.10. The ...

LAMINATED AND ION-EXCHANGED STRENGTHENED GLASS LAMINATES

A method of making a glass sheet comprises laminating a high CTE core glass to a low CTE clad glass at high temperatures and allowing the laminate to cool creating compressive stress in the clad glass, and then ion exchanging the laminate to increase the compressive stress in the outer near surface regions of the clad glass. The core glass may include ions that exchange with ion in the clad glass to increase the compressive stress in inner surface regions of the clad glass adjacent to the clad glass/core glass interfaces. The glass laminate may be formed and laminated using a fusion forming and laminating process and fusion formable and ion exchangeable glass compositions. 1. A strengthened laminated glass structure comprising:a core glass layer having a first coefficient of thermal expansion (CTE);a first clad glass layer laminated to a first surface of the core glass layer; anda second clad glass layer laminated to a second surface of the core glass layer;{'sup': '−7', 'wherein each of the first clad glass layer and the second clad glass layer comprises an ion exchangeable alkali aluminosilicate glass having a second CTE that is lower than the first CTE of the core glass layer and less than or equal to 65×10/° C., whereby each of the first clad glass layer and the second clad glass layer is in a state of compressive stress; and'}wherein an ion exchanged outer surface region of each of the first clad glass layer and the second clad glass layer is in a state of enhanced compressive stress compared to the rest of the respective first clad glass layer or second clad glass layer.2. The strengthened laminated glass structure of claim 1 , wherein the second CTE is at least 10×10/° C. lower than the first CTE.3. The strengthened laminated glass structure of claim 1 , wherein the second CTE is lower than the first CTE by an amount in a range from 10×10/° C. to 60×10/° C.4. The strengthened laminated glass structure of claim 1 , wherein the second CTE is lower than the ...

GLASS PLATE FOR LIGHT GUIDE PLATE

A glass plate for a light guide plate includes a first glass layer; a second glass layer facing the first glass layer; and a third glass layer that is an intermediate glass layer formed between the first glass layer and the second glass layer, wherein the glass plate is provided with a three layer structure in a plate thickness direction, and wherein the glass plate satisfies t/(t+t+t)<0.03 . . . (1); n>n. . . (2); and n>n. . . (3), where tis a thickness of the first glass layer, tis a thickness of the second glass layer, tis a thickness of the third glass layer, nis a refractive index of the first glass layer, nis a refractive index of the second glass layer, and nis a refractive index of the third glass layer. 1. A glass plate for a light guide plate comprising:a first glass layer;a second glass layer facing the first glass layer; anda third glass layer, the third glass layer being an intermediate glass layer formed between the first glass layer and the second glass layer,wherein the glass plate is provided with a three layer structure in a plate thickness direction of the glass plate, and [{'br': None, 'i': t', 't', '+t', '+t, 'sub': 1C', '1B1', '1B2', '1C, '/()<0.03 \u2003\u2003(1);'}, {'br': None, 'sub': 1C', '1B1, 'n>n\u2003\u2003(2); and'}, {'br': None, 'sub': 1C', '1B2, 'n>n\u2003\u2003(3),'}], 'wherein the glass plate satisfies'}{'sub': 1B1', '1B2', '1C', '1B1', '1B2', '1C, 'where tis a thickness of the first glass layer, tis a thickness of the second glass layer, tis a thickness of the third glass layer, nis a refractive index of the first glass layer, nis a refractive index of the second glass layer, and nis a refractive index of the third glass layer.'}2. The glass plate for the light guide plate according to claim 1 , wherein each of the first glass layer and the second glass layer includes claim 1 , in teens of mass percentage on a basis of oxide claim 1 , 60% to 80% SiO; 0% to 7% AlO; 0% to 10% MgO; 0% to 20% CaO; 0% to 15% SrO; 0% to 15% BaO; 3% to ...

GLASS PLATE

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 ...

LITHIUM CONTAINING GLASSES

A glass article including, on an oxide basis, from 60 mol % to 74 mol % SiO, from 7 mol % to 18 mol % AlO, from 3 mol % to 16 mol % BO, from 0 mol % to 6 mol % NaO, from 0 mol % to 5 mol % PO, from 5 mol % to 11 mol % LiO, less than or equal to 0.2 mol % SnO, and from 0.5 mol % to 6.5 mol % divalent cation oxides. The glass article has a molar ratio of AlO:(RO+RO) greater than or equal to 0.9, where RO is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %. 135-. (canceled)36. A glass article comprising , on an oxide basis:{'sub': '2', 'from greater than or equal to 65 mol % to less than or equal to 74 mol % SiO;'}{'sub': 2', '3, 'from greater than or equal to 7 mol % to less than or equal to 12 mol % AlO;'}{'sub': 2', '3, 'from greater than or equal to 5 mol % to less than or equal to 16 mol % BO;'}{'sub': '2', 'from greater than or equal to 0 mol % to less than or equal to 4 mol % NaO;'}{'sub': 2', '5, 'from greater than or equal to 0 mol % to less than or equal to 5 mol % PO;'}{'sub': '2', 'from greater than or equal to 5 mol % to less than or equal to 11 mol % LiO; and'}from greater than or equal to 0.5 mol % to less than or equal to 6.5 mol % divalent cation oxides,{'sub': 2', '3', '2', '2, 'wherein a molar ratio of AlO:(RO+RO) is greater than or equal to 0.9, where RO is a sum of alkali metal oxides in mol % and RO is a sum of divalent cation oxides in mol %.'}37. The glass article of claim 36 , wherein the glass article has a liquidus viscosity of less than or equal to 300 kP.38. The glass article of claim 37 , wherein the glass article comprises a molar ratio of LiO:RO greater than or equal to 0.4 claim 37 , where RO is a sum of alkali metal oxides in mol %.39. The glass article of claim 36 , wherein the glass article comprises greater than or equal to 80 mol % AlO+SiO+BO+PO.40. The glass article of claim 36 , wherein the glass article comprises from greater than or equal to 0.5 mol % to less than or equal to 2 mol % SrO. ...

Ultrathin glass with high impact resistance

An ultrathin chemically toughened and subsequently etched glass article is provided. The article has a thickness of less than or equal to 0.4 mm and a breakage height (given in mm) of more than 200 multiplied by the thickness (t given in mm)). Further, the article has a breakage bending radius (given in mm) of less than 100000 multiplied by the thickness (t given in mm) and divided by a surface compressive stress (in MPa) measured at a first surface.

SHEET OF FLOAT GLASS HAVING HIGH ENERGY TRANSMISSION

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 ...

Ion-exchanged glass of high surface compression and shallow depth of layer with high resistance to radial crack formation from vickers indentation

Disclosed are alkali aluminosilicate glasses having unexpected resistance to indentation cracking. The glasses obtain this high resistance as a result of a high level of surface compression accompanied by a shallow depth of layer. The advantaged glasses show greater resistance to radial crack formation from Vickers indentation than glasses with the same compressive stress, but higher depths of layer.

Fusion Formable Silica and Sodium Containing Glasses

Sodium containing aluminosilicate and boroaluminosilicate glasses are described herein. The glasses can be used as substrates or superstrates for photovoltaic devices, for example, thin film photovoltaic devices such as CIGS photovoltaic devices. These glasses can be characterized as having strain points ≧535° C., for example, ≧570° C., thermal expansion coefficients of from 8 to 9 ppm/° C., as well as liquidus viscosities in excess of 50,000 poise. As such they are ideally suited for being formed into sheet by the fusion process. 1. A glass consisting essentially of in weight percent:{'sub': '2', '50 to 72 percent SiO;'}{'sub': 2', '3, 'greater than 15 to 25% percent AlO;'}{'sub': 2', '3, '0 to 10 percent BO;'}{'sub': '2', '10 to 25 percent total MO; and'}greater than 0 to 25 percent total RO;{'sub': '2', 'wherein M is an alkali metal selected from Na, K, Li, Rb, and Cs, wherein the glass comprises at least 9 weight percent NaO, wherein R is an alkaline earth metal selected from Mg, Ca, Ba, and Sr,'}{'sup': '−7', 'wherein the glass has a strain point of 535° C. or greater, a coefficient of thermal expansion of 50×10or greater, and a liquidus viscosity of 130,000 poise or greater.'}2. The glass of claim 1 , comprising 0-3 weight percent KO.3. The glass of claim 1 , substantially free of KO.4. The glass of claim 1 , comprising 0.5 to less than 14 weight percent RO.5. The glass of claim 1 , comprising less than 2.5 weight percent MgO.6. The glass of claim 1 , comprising 55 to 72 weight percent SiO.7. The glass of claim 1 , having a strain point of 560° C. or greater.8. The glass of claim 1 , comprising 9 to 17 weight percent NaO.9. The glass of claim 1 , comprising no ZrO.10. The glass of claim 1 , consisting of SiO claim 1 , AlO claim 1 , MO claim 1 , and RO.11. The glass of claim 1 , consisting of SiO claim 1 , AlO claim 1 , MO claim 1 , BO claim 1 , and RO.12. The glass of claim 1 , substantially free of BaO.13. The glass of claim 1 , having a liquidus viscosity of ...

Glass with Single Reinforced Layer and Preparation Method Thereof

The present invention relates to glass with a single reinforced layer, comprising a glass body and the single reinforced layer formed in a surface of the glass body. The compressive stress of the single reinforced layer trends to decrease non-linearly from the surface of the glass body to the interior of the glass body. The compressive stress curve of the single reinforced layer has an inflection point. The gradient of a first curve section in front of the inflection point is greater than the gradient of a second curve section behind the inflection point. The overall refractive index of the single reinforced layer trends to decrease non-linearly from the surface of the glass body to the interior of the glass body. The refractive index curve of the single reinforced layer has at least two inflection points. Furthermore, a method for preparing the glass with a single reinforced layer is provided. 1. A glass with a single reinforced layer , comprising:a glass body; andthe single reinforced layer formed in a surface of the glass body,wherein the compressive stress of the single reinforced layer trends to decrease non-linearly from the surface of the glass body to the interior of the glass body, the compressive stress curve of the single reinforced layer has an inflection point, and the gradient of a first curve section in front of the inflection point is greater than the gradient of a second curve section behind the inflection point, and an overall refractive index of the single reinforced layer trends to decrease non-linearly from the surface of the glass body to the interior of the glass body, and the refractive index curve of the single reinforced layer has at least two inflection points.2. The glass with a single reinforced layer according to claim 1 , wherein the single reinforced layer contains metal ions exchanged into the single reinforced layer claim 1 , and the molar concentration of the metal ions exchanged into the single reinforced layer trends to gradually ...

CHEMICALLY STRENGTHENED GLASS

A chemically strengthened glass having a compressive stress layer formed in a surface layer thereof according to an ion exchange method, in which the glass has a surface roughness (Ra) of 0.20 nm or higher, a hydrogen concentration Y in a region to a depth X from an outermost surface of the glass satisfies the following relational equation (I) at X=from 0.1 to 0.4 (μm), a surface strength F (N) measured by a ball-on-ring test under the following conditions is (F≧1500×t) relative to a sheet thickness t (mm) of the glass, and a surface of the glass has no polishing flaw: 14-. (canceled)5. A glass sheet , having a compressive stress layer formed in a surface layer thereof according to an ion exchange method ,wherein the glass sheet has a surface roughness (Ra) of 0.20 nm or higher,two or more scratches each having a length of 5 μm or more and a width of 0.1 μm or more are not present in a region of 10 μm×5 μm of the surface of the glass sheet,an average hydrogen concentration, at a depth from the surface of the glass sheet of from 0.1 μm to 0.4 μm, is in a range from 0.070 to 0.150 mol/L, and {'br': None, 'i': 'Y=aX+b', '(I)'}, 'a hydrogen concentration Y in a region to a depth X from a surface of the glass sheet satisfies relational equation (I) at X=from 0.1 to 0.4 (μm) [{'sub': '2', 'Y is the hydrogen concentration measured as HO, (mol/L);'}, 'X is the depth from the surface of the glass sheet (μm);', 'a is in a range from −0.210 to −0.050; and', 'b is in a range from 0.020 to 0.220., 'wherein6. The glass sheet according to claim 5 , wherein the glass is made of an aluminosilicate glass or an aluminoborosilicate glass.7. The glass sheet according to claim 5 , wherein a thickness of the glass sheet is 5 mm or less.8. The glass sheet according to claim 5 , wherein a thickness of the glass sheet is 3 mm or less.9. The glass sheet according to claim 5 , wherein in the relational equation (I) claim 5 , b is in a range from 0.020 to 0.215.10. The glass sheet according to ...