MODIFIZIERTES SOL-GEL ALUMINIUMOXID

ALUMINIUMOXID UND ZIRCONIUMOXID ENTHALTENDES SCHLEIFKORN

Keramische Körper auf Basis von mikrokristallinem Aluminiumoxid.

SCHLEIFKÖRNER AUF DER BASIS VON ALUMINIUM- UND ZIRKONIUMOXYNITRID

SOL-GEL-VERFAHREN ZUR HERSTELLUNG VON AUF BASIS VON ALUMINA HALTBAREN KERAMISCHEN SCHLEIFKOERNERN ODER -PRODUKTEN.

SCHLEIFMITTEL

Polycrystalline abrasive constructions

SINTERED ABRASIVE GRAIN AND PROCESS FOR MAKING SAME

... 1,248,792. Alumina-chromia grains. CARBORUNDUM CO. 19 Dec., 1968 [21 Dec., 1967], No. 60336/68. Heading C1J. [Also in Division C4] Sintered abrasive grains comprise finely divided bauxite and 2-20 wt. per cent chromium oxide. They are made from a mixture of bauxite, chromium oxide, a temporary binder, e.g. bentonite, starch, dextrine or methyl cellulose, and water, by forming into grains each comprising a plurality of particles of bauxite and chromium oxide, drying the grains and sintering at 1400-1700‹ C. in a neutral atmosphere. The bauxite suitably has an average particle size of 2-4 microns and the chromium one of 2 microns. The mixture is extruded into rods, e.g. of diameter 0À07 inch, and cut into cylinders of length/diameter ratio 2: 1. If an organic binder is included it is burnt out at 700-1100‹ C. before sintering.

Polycrystalline diamond carbide composites

SINTERED ABRASIVE GRAIN

... 1,254,781. Sintered abrasive grains. CARBORUNDUM CO. 24 Feb., 1969 [7 March, 1968], No. 9706/69. Heading C4V. Sintered abrasive grain comprises alumina and zirconia and, as additive, an alkaline earth oxide or halide, an oxide of chromium, manganese or cobalt, a halide of aluminium, manganese cobalt or chromium and mixtures of these. During the formation of the grains a temporary binder such as bentonite, starch, dextrin, methyl cellulose and phenol-aldehyde condensation products. Grains may be formed by extrusion to form rods of uniform geometrical cross-section, which are subsequently sintered.

MANUFACTURE OF SINTERED ALUMINA ABRASIVES

... 1452641 Abrasive grains NORTON CO 22 Oct 1974 [24 Oct 1973] 45566/74 Heading C4V An abrasive material in a sintered formed-tosize particles for use in bonded grinding wheels, for rough grinding application such as snag grinding of stainless steel, have individual abrasive particles having a composition including alumina, ceria and zirconia in compositional amounts defined by the boundary AEBC in the given ternary composition diagram, the alumina, zirconia and ceria amounting to at least 95% by weight of the composition. In addition to the alumina, zirconia and ceria, oxides of silicon, titanium, iron, calcium, magnesium, manganese, vanadium, chromium, nickel and cobalt may be present. The average crystal size of the material is preferably not above 5 microns. The material may be obtained by forming into abrasive grit particles a finely divided powdered mixture having a composition as above and fixing the particles at sintering temperatures, such as 1350‹ to 1600‹ C.

VERFAHREN ZUR AUFARBEITUNG VON VERBRAUCHTEN KATALYSATOREN ZWECKS HERSTELLUNG VON SCHLEIFMATERIALIEN

SCHLEIFMITTEL AUF DER BASIS VON KUBISCHEM BORNITRID UND VERFAHREN ZU SEINER HERSTELLUNG

VERFAHREN ZUR HERSTELLUNG EINES GESINTERTEN SCHLEIFMATERIALS AUF DER BASIS VON ALPHA-AL2O3

PROCEDURE FOR THE PRODUCTION OF CORUNDUM SHARPENING GRAIN ON ALUMINA BASIS WITH INCREASED TENACITY AS WELL AS ITS USE IN ABRASIVES

SINTERED, POLYCRYSTALLINE ZIRKONIA CONTAINING SHARPENING PARTICLES

SCHLEIFKORN AUF BASIS VON GESINTERTEM ALUMINIUMOXID UND METALLHALTIGEN ZUSAETZEN UND VERFAHREN ZU SEINER HERSTELLUNG

GESINTERTES ALUMINIUMOXID-SCHLEIFKORN UND GESINTERTES ALUMINIUMOXID-SCHLEIFKORN UND SCHLEIFENDE ERZEUGNISSE SCHLEIFENDE ERZEUGNISSE

GESINTERTES ALUMINIUMOXID-SCHLEIFKORN UND SCHLEIFENDE ERZEUGNISSE

SCHLEIFKORN AUF BASIS VON GESINTERTEM ALUMINIUMOXID UND METALLHALTIGEN ZUSAETZEN UND VERFAHREN ZU SEINER HERSTELLUNG

PROCEDURE FOR THE PRODUCTION OF AGREED DIAMOND SHARPENING PARTICLES

PROCEDURE FOR THE PRODUCTION OF ARTICLES FROM GLASS AS WELL AS SO MANUFACTURE OF GLASS CERAMIC ARTICLES

SINTERED COMPOUND SHARPENING GRAIN, PROCEDURE FOR ITS PRODUCTION AS WELL AS ITS USE

INOCULATE FROM TRANSITION ALUMINA WITH GERMS FROM CHROMOXID FOR THE PRODUCTION OF ALPHA ALUMINA.

SINTERED COMPOUND GRINDING WHEEL, PROCEDURE FOR ITS PRODUCTION AS WELL AS ITS USE.

SCHLEIFKORN AND PROCEDURE FOR THE PRODUCTION OF THE SAME

FORMED SHARPENING PARTICLES AND PROCEDURES FOR YOUR PRODUCTION

PROCEDURE AND DEVICE FOR MAKING CUBIC BORON NITRIDE OF POWDERED HEXAGONAL BORON NITRIDE.

SCHLEIFKÖRNER ON THE BASIS OF ALUMINUM AND ZIRKONIUMOXYNITRID

PROCEDURE FOR THE PRODUCTION OF SINTERED ALPHA-AL2O3-KÖRPER AS WELL AS THEIR USE

METHOD OF MAKING ABRASIVE COMPACTS

ABRASIVES BASED ON RARE EARTHS

CUBIC BORON NITRIDE AND ITS PREPARATION

ALUMINA BASED ABRASIVE MINERAL

Abrasive particles having complex shapes and methods of forming same

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

A DIAMOND METAL COMPOSITE

The present invention relates to a method for producing diamond-metal composites comprising mixing diamond particles with metal-filler particles forming a diamond/metal-filler mixture, forming a green body of the diamond/metal-filler mixture, optionally green machining the green body to a work piece before or after pre-sintering by heating the green body to a temperature <= 500 °C, infiltrating the green body or the work piece with one or more wetting elements or infiltrating the green body or the work piecewith one or more wetting alloys, which infiltration step being carried out under vacuum or in an inert gas atmosphere at a pressure < 200 Bar. The invention relates further to a green body, a diamond metal composite, and use of the diamond metal composite.

PREPARATION OF ABRASIVE MATERIAL FROM SPENT CATALYSTS

PREPARATION OF ABRASIVE MATERIAL FROM SPENT CATALYSTS An abrasive material is prepared from a starting material. comprised of a spent metallic catalyst on an alumina carrier by melting the starting material with a reducing agent to obtain a melt consisting of a melt component including the alumina on an alloy residue, cooling the melt at a speed correlated with a desired crystallite size of the abrasive material to be obtained, and mechanically separating the melt component from the alloy residue before or after solidification, the melt component constituting the abrasive material.

METHOD OF MAKING ARTICLES FROM GLASS AND GLASS CERAMIC ARTICLES SO PRODUCED

Method of making an article, the method comprising coalescing a plurality of the glass particles. The article may comprise glass, glass-ceramic, and/or crystalline ceramic. Examples of articles include kitchenware (e.g., plates), dental brackets, and reinforcing fibers, cutting tool inserts, abrasives, and structural components of gas engines, (e.g., valves and bearings).

HIGH SOLIDS OF CONTENT GELS AND A PROCESS FOR PRODUCING THEM

ALUMINIUM AND ZIRCONIUM OXYNITRIDE ABRASIVE GRAINS

L'invention a pour objet des grains abrasifs à base de corindon-zircone contenant en poids plus de 50% de mélange eutectique alumine-zircone, caractérisés en ce qu'ils contiennent de 0,3 à 3% d'azote, et que les cristaux de zircone sont à plus de 75% sous forme cubique. Ces grains abrasifs sont utilisés notamment pour la fabrication de meules de rectification, de toiles et papiers abrasifs, de pâte à polir et d'abrasifs projetés.

ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%.

METHOD FOR MAKING SINTERED ABRASIVE GRAIN AND APPARATUS FOR SINTERING ABRASIVE GRAIN

A method for making abrasive grain and an apparatus for sintering unsintered abrasive grain precursor to provide sintered abrasive grain. Abrasive grain prepared according to the method of the present invention can be incorporated into abrasive articles such as bonded abrasives (e.g., grinding wheels), coated abrasives, and nonwoven abrasives.

PROCESS FOR THE PREPARATION OF SINTERED MICROCRYSTALLINE A1 O BODIES AND THEIR USE

Process for the preparation of sintered microcrystalline .alpha.-Al2O3 bodies and their use Sintered microcrystalline bodies based alpha-alumina (.alpha.Al2O3) are produced by electropheretically depositing .alpha.-Al2O3 from a suspension thereof on an electrode substrate, removing the deposit and drying, comminuting and sintering it. STA 15 ...

ABRASIVE BODY

The invention provides a method of manufacturing an abrasive body which includes the steps of providing a mixture comprising a mass of nanosized ceramic particles and a mass of ultra-hard abrasive particles, typically diamond and cubic boron nitride, and sintering the mixture into a coherent body. The sintering conditions used are hot-pressing conditions.

MODIFIED ALPHA ALUMINA PARTICLES

Seeded sol-gel alumina abrasive grits with improved grinding performance incorporating alkali metal oxides selected from rubidium and caesium oxides.

Künstliches Schleifmittel.

Material zur Erstellung eines Schleifwerkzeuges.

Verfahren zur Erzeugung von Schleifmaterial.

Verfahren zur Herstellung von Hartstoffen grosser Zähigkeit

PROCEDURE FOR THE PRODUCTION OF DIAMOND GRINDING WHEELS.

METHOD OF OBTAINING CUBIC BORON NITRIDE, PRODUCT AND USE OF THE PRODUCT.

SCHLEIFKORN AND PROCEDURE FOR ITS PRODUCTION.

Silicon nitride sintered abrasive grain and process for its production

Sintering of silicon nitride powder with oxidic sinter additives, in particular aluminium oxide/yttrium oxide gives abrasive grain having high toughness.

Improved coated abrasives.

La présente invention concerne de nouveaux abrasifs appliqués comportant des grains agglomérés abrasifs, caractérisés par une porosité élevée et un rapport faible du volume de matières solides sur le volume nominal qui fournissent un milieu exceptionnellement utile par rapport à des caractéristiques de meulage à basse pression.

Method for preparing amorphous material and ceramics

Sintered particle in the form of ball, useful for treating surface of bottles, comprises composition of e.g. zirconium oxide and hafnium oxide, silicon oxide and aluminum oxide, and crystallized phases of e.g. zircon, mullite and corundum

Particule frittée présentant : - la composition chimique suivante, en pourcentages en masse sur la base des oxydes et pour un total de 100% : 30% ≤ ZrO2+HfO2 ≤ 55%, avec HfO2 ≤ 2 % ; 18% ≤ SiO2 ≤ 35% ; 6% ≤ Al2O3 ≤ 40% ; 0,5% ≤ MgO ≤ 6% ; B2O3 ≤ 5% ; moins de 9,0 % d'autres oxydes, et - les phases cristallisées suivantes, en pourcentages en masse sur la base des phases cristallisées présentes et pour un total de 100% : 32% ≤ zircon ≤ 80% ; 3% ≤ mullite ≤ 15% ; zircone + hafnie, éventuellement stabilisés : ≤ 9% ; 4% ≤ corindon ≤ 37% ; moins de 10 % d'autres phases cristallisées, et - une porosité totale inférieure ou égale à 6%.

Manufactoring process of sintered abrasive grains and abrasive tools fabriquésà to start from the latter

PROCESS FOR THE MANUFACTURE OF ABRASIVE MATTER CONTAINING DIAMOND PARTICLES

Compact product formed by several boron nitride crystals cubic and proceeded for its manufacture

A PROCESS FOR PRODUCING A DENSE COHERENT COMPACT OF PARTICULATE DIAMOND AND PRODUCT THEREOF

ABRASIVE COMPOSITION AND MANUFACTORING PROCESS Of ABRASIVE

SINTERED ABRASIVE GRAIN

Agglomerates for grinding, polishing, grinding, etc…

MODIFIED ALPHA ALUMINA PARTICLES

본 발명은 산화루비듐 및 산화세슘으로부터 선택된 알칼리 금속 산화물을 혼입시켜 분쇄 성능을 개선시킨 시드 졸-겔 알루미나 연마제 그릿에 관한 것이다. The present invention relates to a seed sol-gel alumina abrasive grit incorporating an alkali metal oxide selected from rubidium oxide and cesium oxide to improve grinding performance.

입방정 질화붕소 복합 다결정체 및 그 제조 방법, 절삭 공구, 와이어 드로잉 다이, 및 연삭 공구

... 입방정 질화붕소 복합 다결정체는, 입상의 입방정 질화붕소(1)와, 판상의 입방정 질화붕소(2)를 갖고 있다. 입상의 입방정 질화붕소(1)의 평균 입경은 500 ㎚ 이하이다. 판상의 입방정 질화붕소(2)의 짧은 변(3)의 최대값은 10 ㎚ 이상, 10000 ㎚ 이하이다. 이것에 의해, 높은 경도를 갖는 입방정 질화붕소 복합 다결정체 및 그 제조 방법, 절삭 공구, 와이어 드로잉 다이, 및 연삭 공구를 제공할 수 있다.

CERAMIC MATERIALS, ABRASIVE PARTICLES, ABRASIVE ARTICLES, AND METHODS OF MAKING AND USING THE SAME

Amorphous materials, glass-ceramics and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes. © KIPO & WIPO 2007 ...

ORGANIC FILM CHEMICAL MECHANICAL PLANARIZATION (CMP) SLURRY COMPOSITION AND POLISHING METHOD USING SAME

The present invention relates to an organic film chemical mechanical planarization (CMP) slurry composition, and to a polishing method using the same. The organic film CMP slurry composition contains ceria and cerium nitrate, and selection ratio calculated by an equation 1 is greater than or equal to 100. In the equation 1, α refers to polishing rates (Å/min) for organic films, whereas β refers to (Å/min) for inorganic films. COPYRIGHT KIPO 2017 ...

ABRASIVE PARTICLE PLURALITY, METHOD TO MANUFACTURE ABRASIVE PARTICLES, ABRASIVE ARTICLE, AND, METHOD FOR ABRADAR A SURFACE

ABRASIVE GRAINS To the BASE OF OXINITRETO OF ALUMINUM

Process for preparing abrasive grain ceramic alpha alumina-based abrasive grain and crystalline abrasive article

Process for preparing abrasive grain material abrasive grain and abrasive article

ALUMINA-YTTRIA-ZIRCONIUM OXIDE/HAFNIUM OXIDE MATERIALS, AND METHODS OF MAKING AND USING THE SAME

Method of abrading with boron suboxide (BxO) and the boron suboxide (BxO) articles and composition used

A method of removing material from a surface comprising abrading a surface comprising the step of abrading a surface with an abrasive tool or an abrasive powder comprising a boron suboxide (BxO) composition, wherein during the abrading step the boron suboxide (BxO) composition is maintained at low temperatures. The abrasive which is from the boron suboxide (BxO) family of compounds exhibits an unexpectedly high quality of abrading comparable with the highest quality particulate natural and synthetic diamond, which has a hardness about double that of the boron suboxide (BxO) of the present invention. Further, the invention includes a lapping and polishing powder and lapping slurry wherein the powder is made from a dense, finely crystalline boron suboxide material with a Knoop hardness KHN100 of at least about 2800 kg/mm2 and preferably at least 3800 kg/mm2.

Polycrystalline diamond carbide composites

Polycrystalline diamond (PCD) carbide composites of this invention have a microstructure comprising a plurality of granules formed from PCD, polycrystalline cubic boron nitride, or mixture thereof, that are distributed within a substantially continuous second matrix region that substantially surrounds the granules and that is formed from a cermet material. In an example embodiment, the granules are polycrystalline diamond and the cermet material is cemented tungsten carbide. PCD carbide composites of this invention display improved properties of fracture toughness and chipping resistance, without substantially compromising wear resistance, when compared to conventional pure PCD materials.

Alumina-zirconia, and methods of making and using the same

Alumina-zirconia materials and methods of making the same. Embodiments of the invention include abrasive particles. The abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

A grinding wheel

Sintered ceramic abrasive grains having increased surface area are incorporated into improved "shelling-resistant" grinding wheels. The grinding wheels comprise a vitreous bond and abrasive grains in which a portion of said abrasive grains are alumina based ceramic particles made by a sol-gel process. These alumina based ceramic abrasive grains are made by providing first particles comprising alpha-alumina precursor, introducing fine particles which can be sintered directly to the surface of the first particles upon sintering of the same, and heating the mixture of particles under sintering conditions to cause autogenous bonding of the fine particles to the surface of each of the first particles. ...

Formation of alumina products from a liquid dispersion through the use of electrophoretic deposition

A process for the formation of high alumina products using electrophoretic deposition. In the process of the invention, a liquid dispersion comprising from about 0.1 to about 40 weight percent aluminium oxide monohydrate and optionally a dissolved metal-containing sintering aid is formed and placed into an electrophoretic cell having an anode (10) and at least one cathode (15). A D.C. current is applied between said anode (10) and cathode (15) causing the deposit of a precipitate of concentrated aluminium oxide monohydrate material onto the cathode (15). The deposit may then be removed from the cathode (15), dried and fired, with or without a separate calcining step, to produce an alumina product.

НАНОКРИСТАЛЛИЧЕСКИЕ СПЕЧЕННЫЕ ТЕЛА НА ОСНОВЕ АЛЬФА-ОКСИДА АЛЮМИНИЯ, СПОСОБ ИХ ИЗГОТОВЛЕНИЯ, А ТАКЖЕ ПРИМЕНЕНИЕ

Изобретение относится к порошковой металлургии, в частности к керамическому спеченному телу на основе α-Al2O3. Спеченное тело содержит 95-100 вес.% Al2O3, имеет относительную плотность >97%, твердость по Виккерсу HV0,2≥17,2 ГПа и кристаллическую структуру со средним размером первичных кристаллов Al2O3<100 нм. Спеченное тело изготовлено путем уплотнения нанокристаллического порошка α-Al2O3 со средним диаметром частиц ≤100 нм, полученного из основного трихлорида алюминия с химической формулой Al2(OH)nCl2, причем n - это число между 2,5 и 5,5 и z - число между 3,5 и 0,5, и сумма n+z постоянно составляет 6 с получением прессовки с плотностью ≥60% и спекания при 1200-1500°С. Полученные абразивные зерна позволяют повысить производительность шлифования. 4 н. и 26 з.п. ф-лы, 3 ил., 2 табл.

Абразивный материал и способ его изготовления из жидкого шлака доменного производства

Изобретение может быть использовано при получении материалов для абразивно-струйной обработки поверхности стальных изделий от коррозии, оксидов, краски. Способ изготовления абразивного материала из жидкого шлака доменного производства включает распыление потока шлака на отдельные частицы, охлаждение частиц в воде, сушку частиц, отсев абразивных фракций. В качестве исходного материала используют расплав доменного шлака следующего состава, мас.%: Fe2O3 и FeO 0,2-1, СаО 35-45, SiO2 35-45, MgO не более 15, Al2O3 не менее 7, Na2O 0,5-1, K2O 1-1,5, TiO2 не более 4, MnO не более 2, S не более 1. Расплав шлака раздрабливают струей водовоздушной смеси на отдельные частицы, которые охлаждают водой до температуры не более 70°С и обезвоживают до влажности не более 10%. В качестве абразивного материала отсеивают частицы шлака размером 0,3-5 мм. Предложен также абразивный материал. Изобретения позволяют получить абразивный материал из доменного шлака, обладающий низким содержанием оксидов железа и твёрдостью ...

АБРАЗИВНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОЛУЧЕНИЯ

FIELD: chemical industry. SUBSTANCE: sol-gel aluminium oxide based material prepared by inoculation comprises alpha-aluminium oxide crystals of submicrometer size and admixture of oxides of metals selected from alkali, alkaline-earth, transition, rare-earth metals, and alumina, amount of calcium oxide constituting less than 100 mln of fractions and total amount of admixtures constitutes less than 400 mln of fractions. Also described is method of preparing abrasive material. EFFECT: abrasives having improved grinding properties. 16 cl, 5 tbl ЭА6бсСуУгс ПЧ Го (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ” 2 142 976. (51) МПК 13) Сл С ОЭ К 3/14, С 04 В 35/411 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 98103866/04, 21.06.1996 (24) Дата начала действия патента: 21.06.1996 (30) Приоритет: 26.07.1995 Ш$ 08/506940 (46) Дата публикации: 20.12.1999 (56) Ссылки: ЕР 519159 А_2, 23.12.92. ЕР 441640 А2, 14.08.91. ЕР 324513 АЛ, 19.07.89. $4 815017 А, 23.03.81. Ц 1112043 А, 07.09.84. ЗИ 401652 А, 22.02.14. Ц$ 4615875 А, 07.10.86. 4$ 4657754 А, 14.04.87. ЕР 200487 А2, 05.11.86. ЕР 558068 АЛ, 01.09.93. (85) Дата перевода заявки РСТ на национальную фазу: 26.02.98 (86) Заявка РСТ: 1$ 96/10755 (21.06.96) (87) Публикация РСТ: М/О 97/05210 (13.02.97) (98) Адрес для переписки: 103104, Москва, Б.Палашевский пер., 3, оф.2, "Гоулинг, Страти и Хендерсон", Дементьеву В.Н. (71) Заявитель: Сент-Гобэн Индастриал Керамикс, Инк. (ЦЗ) (72) Изобретатель: Кэунд Эрап К. (4$), Гэрг Эджей К. (13), Бауэр Ральф (ЦЗ) (73) Патентообладатель: Сент-Гобэн Индастриал Керамикс, Инк. (0$) (54) АБРАЗИВНЫЙ МАТЕРИАЛ И СПОСОБ ЕГО ПОЛУЧЕНИЯ (57) Реферат: Сущность изобретения: материал на основе золь-гелевой окиси алюминия, полученный с затравкой, содержит кристаллы альфа-окиси алюминия субмикрометрового размера и примеси окислов металлов, выбранных из щелочных, щелочноземельных, переходных, редкоземельных металлов и глинозема, причем количество окиси кальция составляет менее ...

МОДИФИЦИРОВАННЫЕ ЧАСТИЦЫ АЛЬФА ОКСИДА АЛЮМИНИЯ

Изобретение относится к золь-гель абразивным материалам из оксида алюминия. Улучшение абразивных свойств достигается тем, что они дополнительно содержат 0,01-2% по весу оксида щелочного металла, выбранного из оксида рубидия, оксида цезия и их смеси. 5 с. и 3 з.п. ф-лы, 5 табл.

АБРАЗИВНЫЕ ИЗДЕЛИЯ И АБРАЗИВНЫЙ МАТЕРИАЛ С ПОКРЫТИЕМ

... 1. Абразивное изделие с покрытием, которое содержит материал подложки и абразивные гранулы агломерата, сцепленные с подложкой при помощи связующего материала, отличающееся тем, что в гранулах агломерата имеется множество абразивных частиц, сцепленных вместе в трехмерной структуре, причем каждая частица соединена по меньшей мере с одной смежной частицей при помощи связующего материала для частиц, который присутствует в агломерате как дисперсная фаза, которая практически полностью имеет форму стоек связки в грануле агломерата, так что агломерат имеет объем неплотной упаковки, который по меньшей мере на 2% ниже, чем для абразивных частиц в индивидуальном состоянии. 2. Абразивный материал с покрытием по п.1, в котором абразивные гранулы агломерата содержат абразивные частицы, сцепленные вместе при помощи от 5 до 25% по объему, в пересчете на полный объем твердых веществ в агломерате, связующего материала для частиц, выбранного из группы, в которую входят стекловидные, стеклокерамические, органические ...

SCHLEIFKÖRNER AUF BASIS VON ALUMINIUMOXID UND VERFAHREN ZU DEREN HERSTELLUNG

Improvements in or relating to abrasive pellets or articles

Abrasive pellets having a regular geometrical configuration, a density of at least 2.75 and a structure substantially free from cracks and fissures, comprises, by weight, (a) 50-95%, preferably 70-90%, crystalline alumina having an average crystal size of less than 5m and most suitably less than 2m , which is tenaciously bonded as a discontinuous phase by a continuous phase of (b) 50-5%, preferably 30-10%, of a glass bonding agent, suitably one comprising 10-25% Al2O3, 50-70% SiO2, 5-15% CaO, 10-20% MgO and up to 3% impurities. The resultant pellet, which may have the form of a tube, cylinder or prism, has a hardness on Moh's scale of about 9 and a size in the minor dimension of 0.03-0.13 inch. The pellets are made by blending (a) and the ingredients for (b) in a ball mill with 30-150% water (based on dry batch weight) until the alumina (a) is reduced to the appropriate dimensions, removing excess water in a filter press, extruding the cake into pellets which are then dried, tumbled (if ...

GRANULAR ABRASIVE MATERIAL

Alumina abrasive and grinding wheels made therefrom

Phenolic resin bonded grinding wheels containing an alumina abrasive (see Group III), may be made by mixing reactive phenol formaldehyde powdered resin with the abrasive, moulding the mixture and pressing while heating to resin curing temperature of about 175 DEG C. Such wheels may also contain fillers which are mixed with the resin and abrasive prior to moulding, e.g. cryolite, iron pyrites and potassium fluoborate or combinations thereof. In an example a grinding wheel was formed from a mixture of 54 volume per cent of the abrasive and 46 volume per cent of bond and fillers, of which the phenol formaldehyde resin bond constituted 55 volume per cent, iron pyrites filler 21 volume per cent, potassium fluoborate filler 21 volume per cent, and lime, which was added as a dehydrating agent to eliminate water liberated during curing, 3 volume per cent. The mixture was moulded at 2 1/2 tons per sq. inch at 160 DEG C. The moulded wheel was baked at temperatures rising from room temperature to ...

ABRASIVE MATERIAL

... 1536615 Alumina abrasive material TREIBACHER CHEMISCHE WERKE AG 17 Oct 1977 [25 Oct 1976] 43132/77 Headings C1A and C1J [Also in Division C7] A process for preparing an abrasive material from a spent metallic catalyst on an alumina carrier comprises heating the supported spent catalyst with at least one reducing agent to obtain a melt having an alumina component on an alloy residue and cooling the melt to form a solidified alumina component constituting the abrasive material, the alumina component and the alloy residue being separated from one another mechanically. The alumina component of the melt may contain at least one additive selected from zirconia (e.g. 5-60 wt. per cent), titania, chromic oxide, lime magnesia, silica, zinc oxide and rare earth oxides. The reducing agent may be coke.

A method of making a polycrystalline super hard constructions

A method of forming polycrystalline diamond comprises placing a plurality of graphene nano-platelets into a capsule and subjecting the platelets to a pressure of between 10 and 20 GPa and a temperature of between 16000 and 3000 degrees C to convert the platelets into nano-polycrystalline diamond. The platelets preferably have a lateral size of between 5 and 25 microns and an average thickness in the Z dimension of between 1 and 15 nm and in the X-Y direction of between 500 and 15000 nm. The platelets may be treated to reduce the presence of oxygen-terminated groups on their surfaces. A polycrystalline super hard construction comprises a polycrystalline diamond region comprising a diamond material formed according to the method of the invention. A cemented carbide substrate may be bonded to the diamond material along an interface. A tool comprising the super hard construction may be for cutting, milling, grinding, rock drilling or earth boring.

ABRASIVE TOOL AND MANUFACTURE THEREOF

... 1,245,373. Moulding abrasive wheels. NORTON CO. 16 Jan., 1970 [16 Jan., 1969], No. 2174/70. Heading B5A. [Also in Division C4] An abrasive tool e.g. a grinding wheel preferably has a density between 0À22 and 3À48 gm/cc. and comprises particles of resilient cellular thermoset organic polymer containing abrasive grains, the particles being bonded by a cured resilient organic polymeric binder. The foamed polymer is preferably polyurethane and the binder may be foamed or unfoamed polyurethane or a phenol-formaldehyde condensation polymer. The tool is manufactured by foaming and curing a mixture abrasive particles and resilient organic polymer, shredding the foamed mixture to particles of 1/32-1/2 inch, coating the particles with the curable binder, placing the coated particles in a mould, applying pressure to the mould to compress the particles to the required density and curing the binder while the particles are compressed. The binder may be cured at room temperature or by heating depending ...

Improvement in abrasive materials and method of manufacturing the same

... 541,039. Abrasive material. BABCOCK & WILCOX CO. Feb. 7, 1940, Nos. 2382 and 2383. Convention dates, Feb. 11, 1939, and Jan. 24, 1940. [Classes 22 and 70] An abrasive material suitable for polishing glass is made by calcining an alumina-silica base material such as kaolin to a temperature below fusion, but not less than 1010‹ C. until recrystallization has progressed sufficiently to form microscopic mullite crystals embedded in a matrix and reducing the calcined material to a finely divided condition. Lime or plaster of Paris may be added as a fluxing material capable of lowering the mullite crystallization temperature, and also to absorb impurities, but these may be replaced by borax, bottle glass, feldspar, lead oxide or sodium carbonate. An example is given in which a mixture of kaolin, plaster of Paris and wood sawdust is moulded and heated in a non-oxidizing atmosphere and finally in an oxidizing atmosphere to about 1290‹ C.

RARE EARTH OXIDE CONTAINING SCHLEIFKORN

SCHLEIFKOERNER FROM ALUMINUM AND YTTRIUMOXIDE OF CONTAINING CERAMIC(S), PROCEDURE FOR THEIR PRODUCTION AND APPLICATION AS WELL AS THEREBY MANUFACTURED PRODUCTS.

PROCEDURE AND PRE-ADJUSTING FOR THE EXTRUDING OF BINGHAM MATERIALS

MANGANOUS OXIDE CONTAINING SCHLEIFKORN

SHARPENING PARTICLE FROM CERAMIC(S), IMPREGNATION PROCEDURE FOR THEIR PRODUCTION AND PRODUCTS OF IT

Shaped abrasive particles with an opening

An abrasive comprising shaped abrasive particles each with an opening. The shaped abrasive particles are formed from alpha alumina and have a first face and a second face separated by a thickness t. The opening in each of the shaped abrasive particles can improve grinding performance by reducing the size of a resulting wear flat, can provide a reservoir for grinding aid, and can improve adhesion to a backing in a coated abrasive article.

Abrasive articles including abrasive particles of silicon nitride

An abrasive article includes a body having abrasive particles contained within a bond material. The abrasive particles can include a majority content of silicon nitride and a minority content of sintering material including at least two rare-earth oxide materials. In an embodiment, the rare-earth oxide materials can include Nd 2 O 3 and Y 2 O 3 . In a particular embodiment, the abrasive particles comprise a content (wt %) of Nd 2 O 3 that is greater than a content of Y 2 O 3 (wt %).

SELF-SHARPENING GRITS AND ASSOCIATED METHODS

Polycrystalline grits and methods of making grits which allow for self-sharpening are provided. In one aspect, for example, a method of sharpening a superabrasive cutting element during cutting can include abrading a self-sharpening superabrasive particle against a work piece to facilitate dulling of a cutting surface of the superabrasive particle, wherein the superabrasive particle includes a superabrasive material and a catalyst material, the catalyst material being located within inclusions in the superabrasive particle. The method can further include interacting the catalyst material and the superabrasive material to cause microfracturing of the superabrasive particle to expose a new cutting surface. 1. A method of sharpening a superabrasive cutting element during a cutting event , comprising:abrading a self-sharpening superabrasive particle against a work piece to facilitate dulling of a cutting surface of the superabrasive particle, wherein the superabrasive particle includes a superabrasive material and a catalyst material, the catalyst material being located within inclusions in the superabrasive particle; andinteracting the catalyst material and the superabrasive material to cause microfracturing of the superabrasive particle to expose a new cutting surface.2. The method of claim 1 , wherein interacting the catalyst material and the superabrasive material further includes interacting the catalyst material and the superabrasive material at an increased temperature to cause carbonization of an internal portion of the superabrasive particle claim 1 , wherein the increased temperature is generated by friction between the dulled cutting surface of the superabrasive particle and the work piece claim 1 , such that the superabrasive particle is microfractured along at least a portion of the carbonized internal portion to expose a new cutting surface.3. The method of claim 2 , wherein less than about ⅓ of the superabrasive particle volume is microfractured from the ...

HIGH PERFORMANCE CERAMIC ABRASIVE GRITS OF UNIFORM THICKNESS AND METHODS OF PRODUCING AND USING THE SAME

A ceramic abrasive grain product of a ceramic material composition, said ceramic abrasive grain product comprising at least fifty percent of abrasive grains having a uniform grain thickness of from 0.002 to 0.016 inches and a length such that the grain is self dressing when oriented such that the thickness of the grain is exposed to a workpiece, abrasive products made therefrom and method for manufacturing and using same. 1. A ceramic abrasive grain product of a ceramic material composition , said ceramic abrasive grain product comprising at least fifty percent of abrasive grains having a uniform grain thickness of from 0.002 to 0.016 inches and a length such that the grain is self dressing when oriented such that the thickness of the grain is exposed to a workpiece.2. The ceramic abrasive grain product of claim 1 , wherein the abrasive grains are crushed claim 1 , extruded and fired sol gel.31. The ceramic abrasive grain product of wherein the abrasive grains are crushed extruded and fired sol gel ribbons.4. The ceramic abrasive grain product of comprising crushed ceramic bubbles formed from blown and sintered sol gel ceramic material.5. The ceramic abrasive grain product of wherein the abrasive grains are crushed extruded and fired sol gel filaments or rods.6. The ceramic abrasive grain product of wherein the ceramic material of the abrasive product is selected from the group consisting of fused and solidified white alumina claim 1 , fused and solidified brown alumina claim 1 , fused and solidified alumina-zirconia ceramic alloy claim 1 , fused and solidified alumina-titania ceramic alloy claim 1 , and solidified and sintered alumina sol gel.7. A coated abrasive product comprising a sheet material having ceramic abrasive grain product of partially embedded in a resin layer on a base layer.8. A coated abrasive product comprising a sheet material having ceramic abrasive grain product of partially embedded in a resin layer on a base layer.9. A coated abrasive product ...

Alumina sintered body, abrasive grains, and grindstone

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein FeTiAlO 5 grains exist in the grain boundary of the alumina grains and the mean grain size of the FeTiAlO 5 grains is from 3.4 to 7.0 μm; and an abrasive grain and a grain stone using the alumina sintered compact.

Alumina sintered body, abrasive grains, and grindstone

Provided are an alumina sintered compact containing a titanium compound and an iron compound, wherein the total amount of the TiO 2 -equivalent content of the titanium compound, the Fe 2 O 3 -equivalent content of the iron compound and the alumina content is at least 98% by mass, the total amount of the TiO 2 -equivalent content of the titanium compound and the Fe 2 O 3 -equivalent content of the iron compound is from 5 to 13% by mass, and the ratio by mass of the TiO 2 -equivalent content of the titanium compound to the Fe 2 O 3 -equivalent content of the iron compound (TiO 2 /Fe 2 O 3 ) is from 0.85/1.15 to 1.15/0.85; and an abrasive grain and a grain stone using the alumina sintered compact.

ABRASIVE AGENT, METHOD FOR PRODUCING ABRASIVE AGENTS, AND ELECTRONIC DEVICE

A method for producing abrasive agents includes: adding a silica to a manganese compound; heat-treating the manganese compound to which the silica has been added; forming abrasive grains by milling the manganese compound to which the silica has been added and which has been heat-treated; and adding a solvent to the abrasive grains. 1. A method for producing abrasive agents , comprising:adding a silica to a manganese compound;heat-treating the manganese compound to which the silica has been added;forming abrasive grains by milling the manganese compound to which the silica has been added and which has been heat-treated; andadding a solvent to the abrasive grains.2. The method according to claim 1 , wherein{'sub': 2', '3', '2, 'the manganese compound is selected from a group consisting of MnO, MnCO, and Mn(OH).'}3. The method according to claim 1 , whereinthe heat-treating is performed at a temperature of not less than 800° C. and not more than 1000° C.4. The method according to claim 1 , whereinthe heat-treating is performed so as to rapidly heat and rapidly cool the manganese compound to which the silica has been added.5. An electronic device including a substrate polished with abrasive agents produced by process claim 1 , comprising:adding a silica to a manganese compound;heat-treating the manganese compound to which the silica has been added;forming abrasive grains by milling the manganese compound to which the silica has been added and which has been heat-treated; andadding a solvent to the abrasive grains.6. An abrasive agent claim 1 , comprising:abrasive grains including a silica, a manganese compound and a manganese silicon oxide; anda solvent.7. The abrasive agent according to claim 6 , wherein{'sub': 2', '3', '2, 'the manganese compound is selected from a group consisting of MnO, MnCO, and Mn(OH).'} This application is based upon and claims the benefit of priority of the prior Japanese Patent Application No. 2012-135256, filed on Jun. 14, 2012, the entire ...

CUBIC BORON NITRIDE COMPLEX POLYCRYSTAL AND MANUFACTURING METHOD THEREFOR, AND CUTTING TOOL, WIRE-DRAWING DIE AND GRINDING TOOL

A cubic boron nitride complex polycrystal contains granular cubic boron nitride and tabular cubic boron nitride. The average grain size of the granular cubic boron nitride is 500 nm or less. The maximum value of a short side of the tabular cubic boron nitride is 10 nm or more to 10000 nm or less. Thereby, it is possible to provide a cubic boron nitride complex polycrystal having high hardness and a manufacturing method therefor, a cutting tool, a wire-drawing die and a grinding tool including the same. 1. A cubic boron nitride complex polycrystal comprising:granular cubic boron nitride; andtabular cubic boron nitride;the average grain size of said granular cubic boron nitride being 500 nm or less, andthe maximum value of a short side of said tabular cubic boron nitride being 10 nm or more to 10000 nm or less.2. The cubic boron nitride complex polycrystal according to claim 1 , wherein the average grain size of said granular cubic boron nitride is 300 nm or less.3. The cubic boron nitride complex polycrystal according to claim 1 , wherein the maximum value of said short side of said tabular cubic boron nitride is 10 nm or more to 1000 nm or less.4. The cubic boron nitride complex polycrystal according to claim 1 , further comprising wurtzite-type boron nitride and unavoidable impurities as the remainder claim 1 , whereinthe content of said wurtzite-type boron nitride is 0.1 to 95 v/v %.5. The cubic boron nitride complex polycrystal according to claim 4 , wherein said content of said wurtzite-type boron nitride is 0.1 to 10 v/v %.6. The cubic boron nitride complex polycrystal according to claim 4 , wherein the average grain size of said granular cubic boron nitride is 200 nm or less.7. The cubic boron nitride complex polycrystal according to claim 1 , further comprising wurtzite-type boron nitride claim 1 , pressurized hexagonal boron nitride and unavoidable impurities as the remainder claim 1 , whereinthe content of said wurtzite-type boron nitride is 0.1 to 3 v/v %, ...

ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. 1. A shaped abrasive particle , comprising:a body having a central portion;at least four radial arms extending outwardly from the central portion along the length of the central portion and wherein the radial arms are triangular.2. The shaped abrasive particle of claim 1 , further comprising a fifth radial arm extending outwardly from the central portion along the length of the central portion.3. The shaped abrasive particle of claim 2 , further comprising a sixth radial arm extending outwardly from the central portion along the length of the central portion.4. The shaped abrasive particle of claim 1 , wherein the radial arms are equally spaced around the central portion.5. The shaped abrasive particle of claim 4 , wherein the central portion and the radial arms define a star shaped first end face and a star shaped second end face.6. The shaped abrasive particle of claim 1 , wherein the body is an extruded body.7. The shaped abrasive particle of claim 1 , wherein the body comprises a length (l) claim 1 , a height (h) claim 1 , and a width (w) claim 1 , a base surface end and an upper surface and a side surface extending between the base surface and the upper surface and wherein the body comprises a primary aspect ratio defined by the ratio of length:height of at least 2:1.8. The shaped abrasive particle of claim 7 , wherein the primary aspect ratio is within a range of about 2:1 to about 10:1.9. The shaped abrasive particle of claim 7 , wherein the body is overlying a backing and the length of the body is ...

SHAPED SILICEOUS ABRASIVE AGGLOMERATE WITH SHAPED ABRASIVE PARTICLES, ABRASIVE ARTICLES, AND RELATED METHODS

A shaped abrasive agglomerate particle includes a shaped abrasive particle bonded in a siliceous matrix. The siliceous matrix comprises a reaction product of an alkali silicate and a hardener. The abrasive agglomerate particles are useful in abrasive articles. Methods of making the shaped abrasive agglomerate particle and abrading a workpiece are also described. 1. A shaped abrasive agglomerate particle comprising shaped abrasive particles bonded in a siliceous matrix , wherein the siliceous matrix comprises a reaction product of at least an alkali silicate and a hardener.2. The shaped abrasive agglomerate particle of claim 1 , wherein at least one of the shaped abrasive particles or the shaped agglomerate particle has a sloping side wall claim 1 , and wherein at least one of the shaped abrasive particles or the shaped agglomerate particle has an angle in a range from 95 degrees to 130 degrees between a first face and the sloping side wall.3. The shaped abrasive agglomerate particle of claim 1 , wherein at least one of the shaped abrasive particles or the shaped agglomerate particle has a frusto-pyramidal shape.4. The shaped abrasive agglomerate particle of claim 1 , wherein the shaped abrasive particles have a longest particle lineal dimension on a surface and a shortest particle dimension perpendicular to the longest particle lineal dimension claim 1 , wherein the longest particle lineal dimension is at least twice the shortest particle dimension.5. The shaped abrasive agglomerate particle of claim 1 , wherein the shaped abrasive agglomerate particle has a longest agglomerate lineal dimension on a surface and a shortest agglomerate dimension perpendicular to the longest agglomerate lineal dimension claim 1 , and wherein the longest agglomerate lineal dimension is at least twice the shortest agglomerate dimension.6. The shaped abrasive agglomerate particle of claim 1 , wherein the shaped abrasive particles are present in a range from 50 percent by weight to 95 ...

Titanium carbonitride powder and method for manufacturing titanium carbonitride powder

A titanium carbonitride powder for use as a starting material for a hard material satisfies a D50 of from 2.0 μm to 6.0 μm and a D10/D90 of from 0.20 to 0.50, wherein D50 is a particle size at a cumulative percentage of 50% of a particle size distribution by volume, D10 is a particle size at a cumulative percentage of 10% of the particle size distribution by volume, and D90 is a particle size at a cumulative percentage of 90% of the particle size distribution by volume.

SHAPED ABRASIVE PARTICLES AND METHOD OF MAKING

A method of making shaped abrasive particles including forming an abrasive flake comprising a plurality of precursor shaped abrasive particles and a frangible support joining the precursor shaped abrasive particles together; transporting the abrasive flake through a rotary kiln to sinter the abrasive flake; and breaking the sintered abrasive flake into individual shaped abrasive particles. The method is useful to make small shaped abrasive particles having insufficient mass to be efficiently individually sintered in a rotary kiln without joining two or more of the shaped abrasive particles together. 120-. (canceled)21. A sintered abrasive flake comprising a plurality of shaped abrasive particles and a frangible support comprising a plurality of bond posts joining the plurality of shaped abrasive particles together , wherein each shaped abrasive particle comprises a plurality of the bond posts.22. The sintered abrasive flake of wherein the frangible support comprises a continuous web.23. The sintered abrasive flake of wherein the frangible support comprises a thickness from 2 to 150 μm.24. The sintered abrasive flake of wherein the sintered abrasive flake comprises the plurality of shaped abrasive particles and a plurality of bond posts joining the plurality of shaped abrasive particles together.25. The sintered abrasive flake of claim 21 , wherein the sintered abrasive flake comprises an average mass and the average mass is greater than or equal to 9×10grams.26. The sintered abrasive flake of claim 21 , wherein the shaped abrasive particles claim 21 , after being separated claim 21 , pass through a test sieve having a size of 1000 microns.27. The sintered abrasive flake of wherein the sintered abrasive flake comprises from 2 to 1000 shaped abrasive particles. Abrasive particles and abrasive articles made from the abrasive particles are useful for abrading, finishing, or grinding a wide variety of materials and surfaces in the manufacturing of goods. As such, there ...

RESIN BONDED CUT-OFF TOOL

The invention relates to a resin bonded cut-off tool. The resin bonded cut-off tool comprises rod shaped sintered bauxite abrasives, wherein an amount of the rod shaped sintered bauxite abrasives is at least 10% to 90% by weight, based on 100% by weight of a Grinding Active Matrix (GAM) of the cut-off tool. The resin bonded cut-off tool comprises further a bonding agent in an amount of 10% to 40% by weight, based on 100% by weight of the GAM of the cut-off tool and fused and/or sintered abrasives in an amount sufficient to bring the GAM of the cut-off tool to 100% by weight. 1100101. Resin bonded cut-off tool () , particularly resin bonded cut-off wheel () , comprising{'b': 10', '10', '100, 'rod shaped sintered bauxite abrasives (), wherein an amount of the rod shaped sintered bauxite abrasives () is at least 10% to 90% by weight, based on 100% by weight of a Grinding Active Matrix (GAM) of the cut-off tool ();'}{'b': 20', '100, 'bonding agent () in an amount of 10% to 40% by weight, based on 100% by weight of the GAM of the cut-off tool (); and'}{'b': 30', '100, 'fused and/or sintered abrasives () in an amount sufficient to bring the GAM of the cut-off tool () to 100% by weight.'}210010. Resin bonded cut-off tool () according to claim 1 , wherein the rod shaped sintered bauxite abrasives () comprise{'sub': 2', '3, 'b': 11', '10, 'aluminum oxide (AlO) () in an amount of 80% to 98% by weight, based on 100% by weight of the rod shaped sintered bauxite abrasives ();'}{'sub': 2', '3', '2, 'b': 12', '13', '10, 'a mixture of ferric oxide (FeO) () and titanium dioxide (TiO) () in an amount of 5% to 15% by weight, based on 100% by weight of the sintered bauxite abrasives ();'}{'sub': '2', 'b': 14', '10, 'silicon dioxide (SiO) () in an amount of 0.2% to 6% by weight, based on 100% by weight of the sintered bauxite abrasives ().'}310010203040. Resin bonded cut-off tool () according to claim 1 , wherein the rod shaped sintered bauxite abrasives () claim 1 , the bonding agent ...

ABRASIVE ARTICLES AND METHODS FOR FORMING SAME

A method for forming an abrasive article via an additive manufacturing technique including forming a layer of powder material comprising a precursor bond material and abrasive particles, compacting at least a portion of the layer to form a compacted layer, binding at least a portion of the compacted layer, and repeating the steps of forming, compacting, and binding to form a green body abrasive article. 1. A method for forming an abrasive article via additive manufacturing comprising:forming a layer of raw material powder including abrasive particles and precursor bond material; and compacting the layer of powder material by at least 1% to not greater than 99% of an average original layer thickness of the layer of raw material powder.2. The method of claim 1 , wherein compaction reduces the thickness of the layer by at least 1 micron.3. The method of claim 1 , wherein the layer comprises a thickness of at least 50 microns.4. The method of claim 1 , further comprising repeating the method to form a batch of abrasive articles or green body abrasive articles.5. The method of claim 4 , wherein each green body abrasive article comprises an SDV and the green body with the highest SDV comprises an SDV of less than 0.0082 inches.6. The method of claim 4 , wherein each green body abrasive article comprises an SDV and the mean SDV of all green body abrasive articles in the batch is less than 0.0063 inches.7. The method of claim 4 , wherein each abrasive article comprises an SDV and the abrasive article with the highest SDV comprises an SDV of less than 0.0082 inches.8. The method of claim 4 , wherein each abrasive article comprises an SDV and the mean SDV of all abrasive articles in the batch is less than 0.0063 inches.9. The method of claim 4 , wherein the batch of abrasive articles has a batch hardness variation of less than 20 HRL.10. The method of claim 4 , wherein the batch of abrasive articles has a batch Dimensional variation-L of less than 0.3 mm.11. The method of ...

Abrasive Particle with at Most Three Surfaces and One Corner

An abrasive particle includes at most three surfaces and at least one edge which has a corner at at least one end. The abrasive particle may contain a ceramic material, particularly polycrystalline α-AlO. Abrasive particles as a whole, methods for producing abrasive particles, moulds, abrasive articles, methods for producing abrasive articles, and methods for abrading a surface are also disclosed. 1. An abrasive grain comprising:two opposite base faces each defining an outline including at least one concave section,wherein the abrasive grain is in the shape of a straight cylinder.2. The abrasive grain as claimed in claim 1 , wherein the outline has at least one corner.3. The abrasive grain as claimed in claim 2 , wherein an edge of the outline defines an inner angle of one of the two opposite base faces within a range from 65° to 120.4. The abrasive grain as claimed in claim 3 , wherein the inner angle is within a range from 65° to 115°.5. The abrasive grain as claimed in claim 3 , wherein the inner angle is within a range from 75° to 105°.6. The abrasive grain as claimed in claim 3 , wherein the inner angle is within a range from 85° to 95°.7. The abrasive grain as claimed in claim 3 , wherein the inner angle is 90°.8. The abrasive grain as claimed in claim 1 , wherein the outline defines at least one linear section.9. The abrasive grain as claimed in claim 8 , wherein the at least one linear section runs at an angle with respect to a support plane of the abrasive grain of at most 20°.10. The abrasive grain as claimed in claim 8 , wherein the at least one linear section runs at an angle with respect to a support plane of the abrasive grain of at most 10°.11. The abrasive grain as claimed in claim 8 , wherein the at least one linear section runs at an angle with respect to a support plane of the abrasive grain of at most 5°.12. The abrasive grain as claimed in claim 1 , wherein:a tangent to at least one point on the outline runs at an angle to a perpendicular line ...

ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. 1. A shaped abrasive grain comprising:a body having a first end face, a second end face and a K-shaped first side face extending between the first end face and the second end face.2. The abrasive grain of claim 1 , wherein the second end face is flat.3. The abrasive grain of claim 2 , wherein the body comprises a third face extending between the first end face and the second end face claim 2 , and wherein the third face is flat.4. The abrasive grain of claim 2 , wherein the body comprises a fourth face extending between the first end face and the second end face claim 2 , and wherein the fourth face is flat.5. The abrasive grain of claim 2 , wherein the body comprises an opening extending into the interior of the body.6. The abrasive grain of claim 5 , wherein the opening extends along a longitudinal axis of the body.7. The abrasive grain of claim 5 , wherein the opening extends along a lateral axis of the body.8. The abrasive grain of claim 5 , wherein the opening extends along a vertical axis of the body.9. The abrasive grain of claim 5 , wherein the opening extends through the entire interior of the body.10. The abrasive grain of claim 5 , wherein the opening has a constant cross-sectional dimension.11. The abrasive grain of claim 1 , wherein the second end face is K shaped.12. The abrasive grain of claim 11 , wherein the body comprises a third face extending between the first end face and the second end face claim 11 , and wherein the third face is flat.13. The abrasive grain of claim 11 , wherein the ...

Shaped abrasive particle fractions and method of forming same

A method of forming a shaped abrasive particle including forming a precursor shaped abrasive particle having a body including at least one predetermined stress concentration point and at least one predetermined stress concentration vector and processing the precursor shaped abrasive particle and fracturing the precursor shaped abrasive particle substantially along the predetermined stress concentration vector to form a fractured shaped abrasive particle.

TETRAHEDRAL ABRASIVE PARTICLES IN ABRASIVE ARTICLES

Various embodiments disclosed relate to an abrasive article (). The abrasive article ( includes a backing () defining a major surface. The abrasive article () includes an abrasive layer including a plurality of tetrahedral abrasive particles () attached to the backing (). The tetrahedral abrasive particles () include four faces joined by six edges terminating at four vertices (). Each one of the four faces contacts three of the four faces, and a major portion of the tetrahedral abrasive particles () have at least one of the vertices () oriented in substantially a same direction. 1. An abrasive article comprising:a backing defining a major surface; andan abrasive layer comprising a plurality of tetrahedral abrasive particles attached to the backing;wherein the tetrahedral abrasive particles comprise four faces joined by six edges terminating at four vertices, each one of the four faces contacting three of the four faces, and a major portion of the tetrahedral abrasive particles have at least one of the vertices oriented in substantially a same direction.2. The abrasive article of claim 1 , wherein the backing comprises at least one material chosen from a polymeric film claim 1 , a metal foil claim 1 , a woven fabric claim 1 , a knitted fabric claim 1 , paper claim 1 , vulcanized fiber claim 1 , a staple fiber claim 1 , a continuous fiber claim 1 , a nonwoven claim 1 , a foam claim 1 , a screen claim 1 , a laminate claim 1 , or combinations thereof.3. The abrasive article of claim 1 , wherein at least one of the four faces is substantially planar.4. The abrasive article of claim 1 , wherein at least one of the tetrahedral abrasive particles comprises sol-gel-derived alumina.5. The abrasive article of claim 1 , wherein at least one of the tetrahedral abrasive particles comprises alpha alumina.6. The abrasive article of claim 1 , wherein at least one of the tetrahedral abrasive particles has equally sized edges.7. The abrasive article of claim 1 , wherein a length of ...

POLYCRYSTALLINE POROUS AL2O3 - BODIES ON THE BASIS OF MOLTEN ALUMINUM OXIDE COMPRISING AN INCREASED THOUGHNESS AND USE THEREOF

The present invention relates to temperature-treated polycrystalline porous AlObodies comprising an amount of α aluminum oxide of more than 97% by weight, an amount of other oxide alloying components of a total of less than 3% by weight, a macroporosity of between 5 and 30% by volume, wherein the AlObodies are composed of a plurality of AlOprimary crystals comprising a crystallite size of between 20 and 100 μm. 1. Polycrystalline porous AlObodies of molten aluminum oxide comprisingan amount of α aluminum oxide of more than 97% by weight; andan amount of other oxide alloying components of a total of less than 3% by weight, wherein{'sub': 2', '3', '2', '3, 'the AlObodies comprise a plurality of AlOprimary crystals having a crystalline size of between 20 and 100 μm,'}{'sub': 2', '3, 'the AlObodies exhibit a macroporosity comprising a pore volume of between 5 and 30% by volume, an average diameter of the pores of between 5 and 30% by volume, an average diameter of the pores of between 20 and 60 μm and a maximum pore diameter in the range of approx. 100 μm, and'}{'sub': 2', '3', '2, 'at the boundaries of the primary crystals, the polycrystalline AlObodies comprise concentrations of individual TiOcomprising extrinsic phases, wherein the extrinsic phases have a diameter of less than 7 μm and are distributed individually either in a punctiform manner or in lines along the primary crystal boundaries.'}2. The AlObodies according to claim 1 ,wherein the extrinsic phases have a diameter of less than 5 μm.3. The AlObodies according to claim 1 ,{'sub': 2', '2', '3', '2', '3', '2', '2', '2', '2, 'wherein the extrinsic phases comprise beside TiOother oxide alloying components selected from the group consisting of CrO, FeO, MgO, NaO, NiO, ZnO, CoO, ZrO, SiO, MnO, or oxides of rare earths.'}4. The AlObodies according to claim 1 , wherein the amount of other oxide alloying components is less than 1% by weight.5. The AlObodies according to claim 1 , wherein the AlObodies are abrasive ...

SHAPED ABRASIVE PARTICLES AND METHOD OF MAKING

A method of making shaped abrasive particles including forming an abrasive flake comprising a plurality of precursor shaped abrasive particles and a frangible support joining the precursor shaped abrasive particles together; transporting the abrasive flake through a rotary kiln to sinter the abrasive flake; and breaking the sintered abrasive flake into individual shaped abrasive particles. The method is useful to make small shaped abrasive particles having insufficient mass to be efficiently individually sintered in a rotary kiln without joining two or more of the shaped abrasive particles together. 1. A sintered abrasive flake comprising a plurality of shaped abrasive particles and a frangible support joining the shaped abrasive particles together.2. The sintered abrasive flake of wherein the frangible support comprises a continuous web.3. The sintered abrasive flake of wherein the continuous web comprises a thickness from 2 to 150 μm.4. The sintered abrasive flake of wherein the sintered abrasive flake comprises the plurality of shaped abrasive particles and a plurality of bond posts joining the plurality of shaped abrasive particles together.5. The sintered abrasive flake of claim 1 , wherein the sintered abrasive flake comprises an average mass and the average mass is greater than or equal to 9×10grams.6. The sintered abrasive flake of claim 1 , wherein the shaped abrasive particles claim 1 , after being separated claim 1 , pass through a standard test sieve having a mesh size of 18.721000. The sintered abrasive flake of wherein the sintered abrasive flake comprises from to shaped abrasive particles.8. A plurality of shaped abrasive particles having an abrasives industry specified nominal grade or nominal screened grade each of the shaped abrasive particles comprising a fractured surface of a frangible support attached to the shaped abrasive particle.9. The plurality of shaped abrasive particles of wherein the fractured surface resides on flashing extending from ...

Sintered Shaped Abrasive Grains on Basis of Alumiunum Oxide Comprising Mineralogical Phases Consisting of Mullite, Tialite and/or Armalcolite, and Baddeleyite and/or Srilankite and a Method for Their Production

The present invention relates to sintered shaped abrasive grains on basis of aluminum oxide comprising mineralogical phases consisting of mullite, tialite and/or armalcolite, and baddeleyite and/or srilankite as well as a method for producing the same by using alumina, ilmenite and zircon sand as raw materials. 1. A method for producing sintered abrasive grains , comprising the steps:{'sub': 2', '3', '4', '3, 'preparing a homogeneous dry mixture of 85%-95% by weight alumina (AlO), 1.0%-10% by weight zircon sand (ZrSiO), and 0.5%-8.0% by weight ilmenite (FeTiO), whereby raw-material-based impurities are less than 2% by weight;'}addition of at least one binder and at least one solvent together with one or more additives selected from the group comprising dispersants, lubricants and plasticizers for obtaining an extrudable mass;extruding the mass;cutting the extruded product to shaped abrasive grain precursors; andsintering the shaped abrasive grain precursors in a temperature range between 1450° C. and 1650° C. for obtaining sintered abrasive grains.2. The method according to claim 1 , whereby the ratio by weight percent of zircon sand to ilmenite is from 1:6 to 6:1.3. Sintered abrasive grains on basis of aluminum oxide produced according to the method of claim 1 , comprising a weight content of{'sub': 2', '3, 'AlObetween 85% and 95% by weight;'}{'sub': '2', 'titanium compounds, expressed as TiO, between 0.5% und 5,0% by weight;'}{'sub': '2', 'silicon compounds, expressed as SiO, between 0.3% and 4.0% by weight;'}{'sub': 2', '3, 'iron compounds, expressed as FeO, between 0.4% and 9.0% by weight;'}{'sub': '2', 'zirconium compounds, expressed as ZrO, between 1.0% und 9.0% by weight; and'}raw-material-based impurities of less than 2% by weight.4. Sintered abrasive grains according to claim 3 , whereby the mineralogical components of the sintered abrasive grains comprise corundum (AlO) claim 3 , mullite (3AlO*2 SiO) claim 3 , tialite and/or armalcolite (AlTiO/AlFeTiO) and ...

METHOD FOR PRODUCING AN ABRASIVE PARTICLE, AND ABRASIVE PARTICLE

The invention relates to a method for producing an alumina based abrasive particle (), comprising at least the following steps: 11. A method for producing an alumina based abrasive particle () , comprising at least the following steps:forming a sol as a solution or dispersion of alumina particles,gelling the sol by adding gelling agents,forming shaped bodies from the gel,{'b': '1', 'drying and firing the shaped bodies while forming shaped abrasive particles (),'}whereinan optically binding binder is added to the sol and/or the gel, andthe gel is applied additively layer by layer and the binder is set using electromagnetic radiation so as to form the shaped bodies.2. The method according to claim 1 , whereina gel layer is applied to a substrate,a laser as illumination means is moved in such a manner that it creates shaped bodies in the gel layer by means of curing the optical binder.3. The method according to claim 1 , wherein successively gel layer are applied one on top of the other and the illumination means each cures areas of the shaped bodies in the applied layer.4. The method according to claim 1 , wherein the curing of the optical binder by means of electromagnetic radiation represents a part of the step of drying or the entire step of drying.57. The method according to claim 1 , wherein on the substrate shaped bodies each having six intersecting and/or overlapping claim 1 , essentially equal volume bodies () are formed claim 1 , in particular claim 1 , having essentially a tripartite outer shape of the shaped bodies.6. The method according to claim 5 , wherein the shaped bodies are formed alternatingly standing on a base face and on a top face.7. The method according to claim 1 , wherein subsequent to the optical binding non-bound gel is washed out or removed claim 1 , and subsequently claim 1 , upon heating the shaped bodies claim 1 , the optical binder is removed claim 1 , e.g. by means of oxidization and/or evaporation.817763615116. An alumina based ...

ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. 1. A shaped abrasive particle comprising:a generally prismatic body having a length, width, and thickness;wherein the length is greater than the width and the length is greater than the thickness; andwherein the generally prismatic body with a first end face and a second end face have a polygonal shape.2. The shaped abrasive particle of claim 1 , wherein the body comprises a twist along a longitudinal axis defining the length of the body.3. The shaped abrasive particle of claim 2 , wherein the twist angle is at least about 2 degrees.4. The shaped abrasive particle of claim 2 , wherein the twist angle is at least about 5 degrees5. The shaped abrasive particle of claim 1 , wherein the body comprises a twist along a lateral axis defining the width of the body.6. The shaped abrasive particle of claim 5 , wherein the twist along the lateral axis defines a lateral twist angle between two ends of the body of at least about 1 degree.7. The shaped abrasive particle of claim 6 , wherein the lateral twist angle is at least about 2 degrees.8. The shaped abrasive particle of claim 6 , wherein the lateral twist angle is at least about 5 degrees.9. The shaped abrasive particle of claim 1 , wherein the body comprises a twist along a vertical axis defining the height of the body.10. The shaped abrasive particle of claim 9 , wherein the twist along the vertical axis defines a vertical twist angle between two ends of the body of at least about 1 degree.11. The shaped abrasive particle of claim 10 , wherein the vertical ...

ELONGATED ABRASIVE PARTICLES, METHOD OF MAKING THE SAME, AND ABRASIVE ARTICLES CONTAINING THE SAME

A method of making elongated abrasive particles includes five steps. Step ) includes providing a mold having parallel linear grooves, partially interrupted at predetermined intervals by transverse obstructions. Step ) includes filling the parallel linear grooves with a flowable abrasive particle precursor composition. Step ) includes at least partially drying the flowable abrasive particle precursor composition to form an at least partially dried abrasive particle precursor composition. Step ) includes separating that composition from the mold, thereby forming elongated precursor abrasive particles having a shape corresponding to portions of the parallel linear grooves disposed between the transverse obstructions. At least one of the first and second opposite ends of the elongated precursor abrasive particles comprises both a molded portion and a fractured portion. Step ) converts the elongated precursor abrasive particles into elongated abrasive particles. Elongated abrasive particles preparable by the method and abrasive articles containing them are also disclosed. 121-. (canceled)22. A method of making elongated abrasive particles , the method comprising:providing a mold having parallel linear grooves, wherein the parallel linear grooves are partially interrupted at predetermined intervals by transverse obstructions;filling at least a portion of the parallel linear grooves with a flowable abrasive particle precursor composition, wherein the flowable abrasive particle precursor composition is confined within at least one of the parallel linear grooves;at least partially drying the flowable abrasive particle precursor composition to form an at least partially dried abrasive particle precursor composition;separating the at least partially dried abrasive particle precursor composition from the mold, thereby forming elongated precursor abrasive particles having a shape corresponding to portions of the parallel linear grooves disposed between the transverse ...

LIQUID PHASE SINTERED SILICON CARBIDE ABRASIVE PARTICLES

An abrasive article includes a bonded abrasive body having abrasive particles contained within a bond material. The abrasive particles include silicon carbide and are essentially free of carbon-based and boron-based sintering aid materials. In an embodiment, the bond material can include a phenolic resin. In another embodiment, the bonded abrasive body can include an oxide phase disposed interstitially between the silicon carbide abrasive particles. In an additional embodiment, the abrasive particles can consist essentially of silicon carbide and aluminum oxide in a ratio of silicon carbide to alumina of at least about 8:1. 1. A shaped abrasive particle comprising:a body comprising a silicon carbide-based composition including a content of an oxide of at least about 0.1 wt % and not greater than about 5 wt % for the total weight of the body.2. The shaped abrasive particle of claim 1 , wherein the body comprises a polyhedral shape.3. The shaped abrasive particle of claim 1 , wherein the body comprises a two-dimensional shape as viewed in a plane defined by the length and width having a polygonal shape claim 1 , ellipsoidal shape claim 1 , a numeral claim 1 , a Greek alphabet character claim 1 , Latin alphabet character claim 1 , Russian alphabet character claim 1 , complex shapes utilizing a combination of polygonal shapes and a combination thereof.4. The shaped abrasive particle of claim 1 , wherein the body comprises a two-dimensional polygonal shape as viewed in a plane defined by the length and width selected from the group consisting of triangular claim 1 , rectangular claim 1 , quadrilateral claim 1 , pentagon claim 1 , hexagon claim 1 , heptagon claim 1 , octagon claim 1 , nonagon claim 1 , decagon claim 1 , any combination thereof.5. The shaped abrasive particle of claim 1 , wherein the body comprises a complex three-dimensional geometry including 3-fold symmetry in three perpendicular planes defined by a longitudinal axis claim 1 , a lateral axis claim 1 , ...

Laser Method for Making Shaped Ceramic Abrasive Particles, Shaped Ceramic Abrasive Particles, and Abrasive Articles

A method of making shaped ceramic abrasive particles includes cutting a layer of ceramic precursor material using a laser beam and forming shaped ceramic precursor particles. Further thermal processing provides shaped ceramic abrasive particles. Shaped ceramic abrasive particles producible by the methods and abrasive articles containing them are also disclosed.

SINTERED VITRIFIED SUPERFINISHING GRINDSTONE

A sintered vitrified superfinishing grindstone is provided which is a sintered product which is obtained by compression molding of a mixed powder of: a sinterable vitrified binder composed of a powder of a borosilicate glass composition; hard abrasive grains; and soft abrasive grains; and which includes bonded portions formed by necking due to heat compression, between particles of the powder of the borosilicate glass composition which are in contact with each other; and wherein the sinterable vitrified binder contains from 94 to 100% by mass of a powder composed of a low-melting-point borosilicate glass composition containing from 35 to 55% by mole of SiO; from 3 to 5% by mole of A1O; from 10 to 35% by mole of BO; and from 25 to 30% by mole of RO+RO. 1. A sintered vitrified superfinishing grindstone ,wherein the sintered vitrified superfinishing grindstone is a sintered product which is obtained by compression molding of a mixed powder of: a vitrified binder composed of a powder of a borosilicate glass composition; and abrasive grains; and which includes bonded portions formed by necking due to heating, between particles of the powder of the borosilicate glass composition which are in contact with each other; and{'sub': 2', '2', '3', '2', '3', '2, 'wherein the vitrified binder is a sinterable vitrified binder which contains from 94 to 100% by mass of a powder composed of a low-melting-point borosilicate glass composition containing from 35 to 55% by mole of SiO; from 3 to 5% by mole of AlO; from 10 to 35% by mole of BO; and from 25 to 30% by mole of RO+RO.'}2. The sintered vitrified superfinishing grindstone according to claim 1 , wherein the sintered product has a porosity of from 8 to 20% by volume.3. The sintered vitrified superfinishing grindstone according to claim 1 , wherein the sintered vitrified superfinishing grindstone has an RH hardness of 100 or more claim 1 , and has a bending strength of from 50 MPa or more.4. The sintered vitrified superfinishing ...

ABRASIVE ARTICLE INCLUDING SHAPED ABRASIVE PARTICLES

A shaped abrasive particle including a body having a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, wherein the body includes a sharpness-shape-strength factor (3SF) within a range between about 0.7 and about 1.7 and a Shape Index within a range between at least about 0.51 and not greater than about 0.99. 1. A shaped abrasive particle comprising:a body comprising a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, wherein the body comprises a sharpness-shape-strength factor (3SF) within a range between about 0.7 and about 1.7 and a Shape Index within a range between at least about 0.51 and not greater than about 0.99.2. The shaped abrasive particle of claim 1 , wherein the body comprises a Shape Index of at least about 0.52 and not greater than about 0.95.3. The shaped abrasive particle of claim 1 , wherein the body has a 3SF of at least about 0.75 and not greater than about 1.65.4. The shaped abrasive particle of claim 1 , wherein the body comprises a strength of not greater than about 600 MPa and at least about 100 MPa.5. The shaped abrasive particle of claim 1 , wherein the body comprises a tip sharpness within a range between not greater than about 80 microns and at least about 1 micron.6. The shaped abrasive particle of claim 1 , wherein the body comprises an additive comprising dopant material selected from the group consisting of an alkali element claim 1 , an alkaline earth element claim 1 , a rare earth element claim 1 , a transition metal element claim 1 , and a combination thereof.7. The shaped abrasive particle of claim 1 , wherein the body comprises a polycrystalline material including crystalline grains claim 1 , wherein the average grain size is not greater than about 1 micron.8. The shaped abrasive particle of claim 1 , wherein the body comprises a two-dimensional shape selected ...

ABRASIVE ARTICLE INCLUDING SHAPED ABRASIVE PARTICLES

A shaped abrasive particle including a body comprising a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, the body comprising a sharpness-shape-strength factor (3SF) within a range between about 0.7 and about 1.7 and a Shape Index within a range between at least about 0.01 and not greater than about 0.49. 1. A shaped abrasive particle comprising:a body comprising a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, wherein the body comprises a sharpness-shape-strength factor (3SF) within a range between about 0.7 and about 1.7 and a Shape Index within a range between at least about 0.01 and not greater than about 0.47.2. The shaped abrasive particle of claim 1 , wherein the body comprises a Shape Index of at least about 0.1 and not greater than about 0.45.3. The shaped abrasive particle of claim 1 , wherein the body has a 3SF of at least about 0.72 and not greater than about 1.65.4. The shaped abrasive particle of claim 1 , wherein the body comprises a strength within a range between at least about 350 MPa and not greater than about 1500 MPa.5. The shaped abrasive particle of claim 1 , wherein the body comprises a tip sharpness within a range between not greater than about 80 microns and at least about 1 micron.6. The shaped abrasive particle of claim 1 , wherein the body comprises an additive comprising a dopant material selected from the group consisting of an alkali element claim 1 , an alkaline earth element claim 1 , a rare earth element claim 1 , a transition metal element claim 1 , and a combination thereof.7. The shaped abrasive particle of claim 1 , wherein the body comprises a polycrystalline material including crystalline grains claim 1 , wherein the average grain size is not greater than about 1 micron.8. The shaped abrasive particle of claim 1 , wherein the body is coupled to a ...

ABRASIVE ARTICLE INCLUDING SHAPED ABRASIVE PARTICLES

A shaped abrasive particle including a body comprising a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, the body having a Shape Index within a range between at least about 0.48 and not greater than about 0.52 and a content of a magnesium-containing species within a range between at least about 1 wt % and not greater than about 4 wt % based on the total weight of the body. 1. A shaped abrasive particle comprising:a body comprising a first major surface, a second major surface, and a side surface extending between the first major surface and the second major surface, wherein the body comprises a Shape Index within a range between at least about 0.48 and not greater than about 0.52 and a content of a magnesium-containing species within a range between at least about 1 wt % and not greater than about 4 wt % based on the total weight of the body.2. The shaped abrasive particle of claim 1 , wherein the body comprises a tip sharpness within a range between not greater than about 80 microns and at least about 1 micron.3. The shaped abrasive particle of claim 1 , wherein the body comprises a sharpness-shape-strength factor (3SF) within a range between about 0.7 and about 1.7.4. The shaped abrasive particle of claim 1 , wherein the body further comprises a zirconium-containing species.5. The shaped abrasive particle of claim 1 , wherein the body further comprises a zirconium-containing species within a range between at least about 0.5 wt % and not greater than about 5 wt % based on the total weight of the body.6. The shaped abrasive particle of claim 5 , wherein a wt % ratio of the zirconium-containing species to the magnesium-containing species is in a range of about 1:4 and about 1:1.7. The shaped abrasive particle of claim 1 , wherein the body is coupled to a substrate as part of a fixed abrasive claim 1 , wherein the fixed abrasive article is selected from the group consisting of a ...

MAGNETIZABLE AGGLOMERATE ABRASIVE PARTICLES, ABRASIVE ARTICLES, AND METHODS OF MAKING THE SAME

Magnetizable agglomerate abrasive particle can comprise constituent abrasive particles retained in a binder material. The magnetizable particles and the constituent abrasive particles are unassociated, and wherein the magnetizable particles have a Mohs hardness of 6 or less. Magnetizable agglomerate abrasive particles can also comprise magnetizable abrasive particles retained in a binder material, wherein each magnetizable abrasive particle comprises a respective ceramic body and a magnetizable layer disposed on at least a portion of the ceramic body. Pluralities of abrasive particles are also disclosed. Methods of making, and abrasive articles including the magnetizable agglomerate particles are also disclosed. 116-. (canceled)17. A magnetizable agglomerate abrasive particle comprising magnetizable particles and constituent abrasive particles retained in a binder material , wherein the magnetizable particles and the constituent abrasive particles are unassociated , and wherein the magnetizable particles have a Mohs hardness of 6 or less.18. The magnetizable agglomerate abrasive particle of claim 17 , wherein the binder matrix comprises a vitreous binder material.19. A magnetizable agglomerate abrasive particle comprising magnetizable abrasive particles retained in a binder material claim 17 , wherein each magnetizable abrasive particle comprises a respective ceramic body and a magnetizable layer disposed on at least a portion of the ceramic body.20. The magnetizable agglomerate abrasive particle of claim 19 , wherein the magnetizable abrasive particles each have two opposed major facets connected to each other by a plurality of side facets claim 19 , and wherein a majority of the magnetizable abrasive particles have at least one of the major facets aligned substantially perpendicular to a common plane.21. The magnetizable agglomerate abrasive particle of claim 17 , wherein the abrasive particles comprise shaped abrasive particles.22. The magnetizable agglomerate ...

CERIUIM-BASED ABRASIVE MATERIAL AND PROCESS FOR PRODUCING SAME

A cerium-based abrasive that achieves a high polishing rate and suppresses the occurrence of surface defects such as scratches and pits and the deposition of the abrasive particles on the polished surface in surface polishing of glass substrates or the like, at low cost with a high production efficiency. The cerium-based abrasive includes a cubic composite rare earth oxide and a composite rare earth oxyfluoride, containing 95.0 to 99.5 mass % of total rare earth elements in terms of oxides, containing 54.5 to 95.0 mass % of cerium in terms of oxide, 4.5 to 45.0 mass % of lanthanum in terms of oxide, and 0.5 to 2.0 mass % of neodymium in terms of oxide relative to the total rare earth elements in terms of oxides, containing 0.5 to 4.0 mass % of fluorine atoms, and containing 0.001 to 0.50 mass % of sodium atoms relative to the total rare earth elements in terms of oxides. 1. A cerium-based abrasive comprising a cubic composite rare earth oxide and a composite rare earth oxyfluoride ,containing 95.0 to 99.5 mass % of total rare earth elements in terms of oxides,containing 54.5 to 95.0 mass % of cerium in terms of oxide, 4.5 to 45.0 mass % of lanthanum in terms of oxide, and 0.5 to 2.0 mass % of neodymium in terms of oxide relative to the total rare earth elements in terms of oxides,containing 0.5 to 4.0 mass % of fluorine atoms, andcontaining 0.001 to 0.50 mass % of sodium atoms relative to the total rare earth elements in terms of oxides.2. The cerium-based abrasive according to claim 1 , wherein the intensity ratio of the main peak of the rare earth oxyfluoride to the main peak of the cubic composite rare earth oxide in the X-ray diffraction measurement using Cu Kα radiation is 0.01 to 0.50.3. A method for manufacturing the cerium-based abrasive according to claim 1 , comprising the steps of:firing mixed light rare earth compounds containing cerium, lanthanum and neodymium at 500 to 1100° C. to obtain mixed rare earth oxides,adding rare earth fluorides containing ...

SINTERED ABRASIVE PARTICLE COMPRISING OXIDES PRESENT IN BAUXITE

The invention relates to sintered abrasive particles of which the chemical composition comprises the weight concentration ranges indicated in the table, to give a total of 100%. 2. An abrasive particle sintered according to claim 1 , characterised by presenting a microstructure in which the average size of the crystalline micro-particles is 0.5 to 1.5 μm.7. An abrasive particle sintered according to claim 1 , characterised by presenting a dimension of 20 μm to 10 mm claim 1 , preferentially in the elongated form of a rod of 0.2 to 3 mm in diameter and 0.5 to 10 mm in length.8. A process of fabrication of abrasive particles according to claim 1 , characterised by the following successive stages being carried out:a) A mixture homogenised mechanically, typically by mixing of powders consisting of the following:a1) An alumina powder, preferentially in which the particles have an average diameter (expressed by the D50 diameter of the particles) between 10 μm and 100 μm, added to the mixture proportionally by weight of 93-96.5%,{'sub': 2', '3, 'a2) An iron oxide powder FeOadded to the mixture proportionally by weight of 0.5% to 2.5% and preferentially where the D50 of the particles is about 20 μm,'}a3) A calcium oxide powder CaO added to the mixture proportionally by weight of 0.5% to 2.5% and preferentially for which the D50 of the particles is less than 5 μm,a4) A magnesium oxide powder MgO added to the mixture proportionally by weight of 0.5% to 3% and preferentially for which the D50 diameter of the particles is less than 5 μm,{'sub': '2', 'a5) A silicon oxide powder SiOadded to the mixture proportionally by weight of 0.5% to 3% and preferentially for which the D50 diameter of the particles is less than 2 μm, and'}{'sub': '2', 'a6) A titanium oxide powder TiO, added to the mixture proportionally by weight of 0% to 2% and preferentially for which the D50 diameter of the particles is less than 5 μm.'}b) Crushing of the mixture preferentially in order to obtain particles ...

PRECURSOR OF ALUMINA SINTERED BODY, METHOD FOR PRODUCING ALUMINA SINTERED BODY, METHOD FOR PRODUCING ABRASIVE GRAINS, AND ALUMINA SINTERED BODY

A precursor of an alumina sintered compact including aluminum, yttrium, and at least one metal selected from iron, zinc, cobalt, manganese, copper, niobium, antimony, tungsten, silver, and gallium. The aluminum content is 98.0% by mass or more as an oxide (AlO) in 100% by mass of the precursor of an alumina sintered compact; the yttrium content is 0.01 to 1.35 parts by mass as an oxide (YO) based on 100 parts by mass of the content of the aluminum as an oxide; the total content of the metals selected from the foregoing group is 0.02 to 1.55 parts by mass as an oxide based on 100 parts by mass of the content of aluminum as an oxide; and the aluminum is contained as α-alumina. Also disclosed is an alumina sintered compact, and a method for producing an alumina sintered compact and for producing abrasive grains. 1. A precursor of an alumina sintered compact comprising aluminum , yttrium , and at least one metal selected from the group consisting of iron , zinc , cobalt , manganese , copper , niobium , antimony , tungsten , silver , and gallium , wherein{'sub': 2', '3, 'the content of the aluminum is 98.0% by mass or more as expressed in terms of an oxide (AlO) in 100% by mass of the precursor of an alumina sintered compact;'}{'sub': 2', '3, 'the content of the yttrium is 0.01 to 1.35 parts by mass as expressed in terms of an oxide (YO) based on 100 parts by mass of the content of the aluminum as expressed in terms of an oxide;'}the total content of the metals selected from the foregoing group is 0.02 to 1.55 parts by mass as expressed in terms of an oxide based on 100 parts by mass of the content of aluminum as expressed in terms of an oxide; andthe aluminum is contained as α-alumina.2. The precursor of an alumina sintered compact according to claim 1 , wherein the yttrium is contained as yttrium acetate tetrahydrate.3. The precursor of an alumina sintered compact according to claim 1 , which is used for obtaining an alumina sintered compact constituting abrasive ...

ABRASIVE PARTICLES AND METHOD OF FORMING SAME

An abrasive particle includes a body having at least one microstructural characteristic including average crystal size of not greater than 6 microns or a hardness of at least 20 GPa, and wherein the body further has at least one deformation characteristic including a primary deformation amplitude of not greater than 30 percent, a primary deformation time of not greater than 280 minutes, or a secondary deformation characteristic rate of not greater than 6×10−3 percent/minute. 1. An abrasive particle comprising: 1) an average crystal size of not greater than 6 microns; or', '2) a hardness of at least 20 GPa;, 'a body having at least one microstructural characteristic including 3) a primary deformation amplitude of not greater than 30 percent', '4) a primary deformation time of not greater than 280 minutes; or', {'sup': '−3', '5) a secondary deformation characteristic rate of not greater than 6×10percent/minute.'}], 'and wherein the body further comprises at least one deformation characteristic including2. The abrasive particle of claim 1 , wherein the abrasive particle is a shaped abrasive particle.3. The abrasive particle of claim 1 , wherein the body comprises a first dopant and a second dopant different than the first dopant.4. The abrasive particle of claim 3 , wherein the first dopant comprises magnesium and the second dopant comprises at least one element from the group consisting of yttrium claim 3 , lanthanum claim 3 , a rare-earth element claim 3 , and a combination thereof.5. The abrasive particle of claim 3 , wherein the first dopant is present in a first grain boundary phase and the second dopant is present in a second grain boundary phase claim 3 , and wherein the first and second grain boundary phases are substantially homogeneous throughout the body.6. The abrasive particle of claim 3 , wherein at least one of the first and second dopants are preferentially distributed in a higher concentration near the exterior surfaces of the body compared to the ...

BONDED ABRASIVE ARTICLE AND METHOD OF MAKING THE SAME

A method of making a bonded abrasive article comprises urging crushed abrasive particles with agitation against the surface of a tool, thereby causing a first portion of crushed abrasive particles to become retained within horizontally-oriented precisely-shaped cavities at predetermined locations with respect to the surface of the tool, and causing a second portion of the crushed abrasive particles to remain as loose particles on the surface of the tool. The loose particles are separated from the tool. The tool is positioned within a mold containing a curable binder material precursor. The crushed abrasive particles retained in the precisely-shaped cavities into the mold are released, and the tool is removed from the mold. The crushed abrasive particles and the curable binder material precursor are shaped and cured to form the bonded abrasive article. A bonded abrasive article preparable by the method is also disclosed. 122-. (canceled)23. A method of making a bonded abrasive article , the method comprising sequentially performing steps:a) providing a tool having first and second opposed horizontal major surfaces, the first major surface defining precisely-shaped cavities, wherein each horizontally-oriented precisely-shaped cavity has a predetermined location with respect to the surface of the tool, wherein each precisely-shaped cavity has a horizontal bottom surface with a respective conduit opening fluidly connected to a vacuum source;b) urging first crushed abrasive particles with agitation against the surface of the tool, thereby causing a portion of the first crushed abrasive particles to become retained within at least some of the precisely-shaped cavities and causing a second portion of the first crushed abrasive particles to remain as first loose particles on the surface of the tool;c) separating substantially all of the first loose particles from the tool;d) positioning the tool within a mold containing a curable binder material precursor;e) releasing the ...

Abrasive Grain With Main Surfaces and Subsidiary Surfaces

An abrasive grain includes a surface having at least a first face with a first outline, and at least one second face with a second outline. The first outline does not contain any vertices, but the second outline contains at least one vertex. The abrasive grain may include a ceramic material, especially polycrystalline α-AlO. 1. An abrasive grain comprising:at least two main surfaces; andat least one subsidiary surface, which is connected by way of a first edge to a first main surface of the at least two main surfaces and is connected by way of a second edge to a second main surface of the at least two main surfaces,wherein the second main surface does not have any edge in common with the first main surface, andwherein the at least one subsidiary surface includes a first obtuse angle with the first main surface in a region of the first edge and a second obtuse angle with the second main surface in a region of the second edge.2. The abrasive grain as claimed in claim 1 ,wherein the abrasive grain has a defined form, andwherein the abrasive grain has an abrasive grain body which has the at least two main surfaces, the at least two main surfaces being substantially planar and lying on faces of (i) an imaginary convex polyhedron, which includes a Platonic solid, an Archimedean solid, a Catalan solid, a prism or antiprism, (ii) on faces of a linearly distorted Platonic solid, Archimedean solid, Catalan solid, prism or antiprism, or (iii) on faces of an imaginary combination of a plurality of a Platonic solid imaginary convex polyhedron, an Archimedean solid imaginary convex polyhedron, a Catalan solid imaginary convex polyhedron, a prism imaginary convex polyhedron, an antiprism imaginary convex polyhedron, a linearly distorted Platonic solid, a linearly distorted Archimedean solid, a linearly distorted Catalan solid, a linearly distorted prism, and a linearly distorted antiprism, andwherein the abrasive grain body has at least one flatly truncated edge.3. The abrasive ...

ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING SAME

An abrasive grain is disclosed and may include a body. The body may define a length (l), a height (h), and a width (w). In a particular aspect, the length is greater than or equal to the height and the height is greater than or equal to the width. Further, in a particular aspect, the body may include a primary aspect ratio defined by the ratio of length:height of at least about 2:1. The body may also include an upright orientation probability of at least about 50%. 1. A shaped abrasive particle comprising:an elongated body having a length, width, and thickness;wherein the length is greater than the width and the length is greater than the thickness;wherein the elongated body comprises a first end face and a second end face; andwherein the body comprises a polycrystalline material including diamond.2. The shaped abrasive particle of claim 1 , wherein the body consists of diamond.3. The shaped abrasive particle of claim 1 , wherein the shaped abrasive particle is part of a fixed abrasive article.4. The shaped abrasive particle of claim 1 , wherein the first end face and second end face have a polygonal shape.5. The shaped abrasive particle of claim 4 , wherein the polygonal shape is selected from the group consisting of a triangle claim 4 , a rectangle claim 4 , a quadrilateral claim 4 , a pentagon claim 4 , a hexagon claim 4 , a heptagon claim 4 , an octagon claim 4 , a nonagon claim 4 , a decagon claim 4 , and a combination thereof.6. The shaped abrasive particle of claim 1 , wherein the body is overlying a backing and comprises an upright orientation probability of at least about 50%.7. The shaped abrasive particle of claim 1 , wherein the body comprises a twist along a longitudinal axis defining the length of the body.8. The shaped abrasive particle of claim 7 , wherein the twist angle is at least about 2 degrees.9. The shaped abrasive particle of claim 1 , wherein the body comprises a twist along a lateral axis defining the width of the body.10. The shaped ...

SPHERICAL SILICON OXYCARBIDE PARTICLE MATERIAL AND MANUFACTURING METHOD THEREOF

Provided are spherical silicon oxycarbide particle material and manufacturing method thereof, wherein the average particle size is in the range of 0.1-100 μm and having a sphericity of 0.95-1.0. 2. The manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the forming of the hydrolysate is performed in the aqueous medium that the pH of which is adjusted to 3-6.3. The manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the condensation reaction is performed while the pH is adjusted to 7-12.4. The manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the spherical silicon oxycarbide precursor particles are spherical polysilsesquioxane having no melting point or softening point.5. The manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the aqueous medium that is acidic is an acetic acid aqueous solution.6. The manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the alkaline solution is aqueous ammonia.7. A spherical silicon oxycarbide (SiOC) particle material manufactured by the manufacturing method of spherical silicon oxycarbide (SiOC) particle material according to claim 1 , wherein the silicon claim 1 , the carbon and the oxygen content in total accounts for more than 98% of a composition of the spherical silicon oxycarbide (SiOC) particle material by elemental analysis claim 1 , wherein the silicon content is 20-50% claim 1 , the carbon content is 10-50% claim 1 , the oxygen content is 20-50% claim 1 , and the composition basically consist of Si claim 1 , O and C claim 1 , wherein if elements other than Si claim 1 , C and O are detected claim 1 , then hydrogen is the only other element detected claim 1 , the average particle size of the spherical silicon oxycarbide (SiOC) particle material ...

Abrasive particles containing sintered, polycrystalline zirconia

Abrasive particles and methods of making abrasive particles are disclosed. The abrasive particles may be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes.

연마용 입상체, 이의 제조방법 및 이의 용도

평균 입자 크기가 2㎛ 이하이고 산화알루미늄 및/또는 산화규소 100중량부와 산화세튬 형태의 세튬 5 내지 25중량부를 포함하는 연마용 입상체가 기재되어 있다. 이의 제조방법, 및 이를 사용하여 반도체 기판 위에 형성된 절연막을 편평화하는 방법도 또한 기재되어 있다.

Lapping composition

A lapping composition which contains abrasive grains which are commercially available and which consists of plate alumina-powder prepared by milling and class:trying a sintered body of plate alumina obtained by calcinating aluminum hydroxide, and other plate alumina powder classified and prepared separately from but similarly to the first-mentioned plate alumina powder having average grain size which is in a range of from 1.3 times to 2.3 times as large as the average grain size of the first-mentioned plate alumina powder. Further provided is a lapping method with such a lapping composition by which the removal rate is improved and a lapped surface excellent in quality can be obtained.

Polishing composition and polishing method

Cmp slurry composition for organic film and polishing method using the same

본 발명은 세리아; 및 세륨질산염을 포함하고, 하기 식 1에 의한 선택비가 100이상인 유기막 CMP 슬러리 조성물 및 이를 이용한 연마방법에 관한 것이다: [식 1] (상기 식 1에서, α는 유기막에 대한 연마량(Å/min)이며, β는 무기막에 대한 연마량(Å/min)이다). The present invention relates to ceria; And an organic film CMP slurry composition containing cerium nitrate and having a selection ratio of 100 or more according to the following formula 1, and a polishing method using the organic film CMP slurry composition: [Formula 1] (? / Min), and? Is the polishing amount (? / Min) for the inorganic film.

Abrasive grain, abrasive articles, and methods of making and using the same

Alpha alumina-based abrasive grain. The abrasive grain can be incorporated into abrasive products such as coated abrasives, bonded abrasives, non-woven abrasives, and abrasive brushes.

Transition metal carbide and boride abrasive particles

This invention relates to abrasive particles and process for their preparation. The particles consist essentially of a matrix of titanium carbide and zirconium carbide, at least partially in solid solution form and grains of crystalline titanium diboride dispersed throughout the carbide matrix. These abrasive particles are particularly useful as components of grinding wheels for abrading steel.

Abrasive particles, abrasive articles, and methods of making and using the same

Abrasive particles, and methods of making and using the same

一种抛光用氧化铈团簇粉及其制备方法

本发明涉及一种抛光用氧化铈团簇粉，其由下述重量百分比的原料制成：玻璃粉3～30%、氧化铈40～95%、氧化铝0.1～15%、氧化铁0.1～5%、氧化锌0.1～10%、氧化锡0.1～10%。该抛光用氧化铈团簇粉通过采用物理和化学相结合的方法生产获得，不但可以有效提高每一颗氧化铈的抛光利用率，而且机械强度和韧性较高，流动性非常好，便于分散使用；同时由于使用寿命的提高，在抛光工作过程中能大幅减少PM2.5粉尘颗粒及废渣对环境的污染。

Layered alumina-based abrasive grit abrasive products, and methods

Alumina-based abrasive material having at least an internal layer is provided. Preferably, the abrasive material results from co-extrusion of at least two different sols. In some preferred processing, steps to provide multiple internal layers are conducted.

较低堆积密度的陶瓷微晶磨料及其磨具制品的制备方法

本发明公开一种较低堆积密度陶瓷微晶磨料及其磨具制品的制备方法，属于磨料磨具技术领域，是由下述制备方法制成：取拟薄水铝石湿品，加入去离子水和硝酸，在搅拌分散机中搅拌30分钟，得混匀的胶体；然后将混匀的胶体放入不锈钢干燥烘盘，在热风循环烘箱中120℃干燥24小时，得到脆性透明胶块；将胶块加入破碎磨中进行破碎，得到粗细不一的胚体；将胚体装入匣钵中，放入推板窑中1400℃高温段保温烧结4小时；使用磁选机除去加工过程中混入的纯铁及铁合金颗粒。使用振动筛并选用粗丝筛网进行小流量长时间的精密筛分，即得较低堆积密度陶瓷微晶磨料。本发明采用溶胶‑凝胶法制备得到的陶瓷微晶磨料它具有均匀细小的微晶结构，高的韧性和微破碎性能。

Abrasive particles, method for producing the same, and use of the same

Abrasive particles having an average particle size of not more than 2 µm and comprising 100 parts by weight of aluminum oxide and/or silicon oxide and 5 to 25 parts by weight of cerium in the form of cerium oxide may be used for planarizing an insulating film on a semiconductor substrate.

一种防撞兼改性机床工业专用微晶陶瓷磨料及其制造方法

本发明公开了一种防撞兼改性机床工业专用微晶陶瓷磨料及其制造方法，该机床工业专用微晶陶瓷磨料由两个部分组成，其中第一部分为氧化铝粉、六水硝酸镧、羟基磷灰石在梭式窑中微晶烧结而成的微晶陶瓷；第二部分为三种组份聚合反应获得，组份A为乙烯基烯属不饱和单体、磷二齿配位体、铅粉、活性碳粉末、二氧化钛粉为原料的混合物；组份B为丙烯酸酯基烯属不饱和单体；组份C为含溶质质量分数10％的泡花碱水溶液，第二部分的组成关系为以铅粉、活性碳粉末、二氧化钛粉为芯体，硅酸凝胶为介质，乙烯基烯属不饱和单体与丙烯酸酯基烯属不饱和单体聚合物为模壳的微胶囊结构。本发明具有微晶结构，磨削刃细而密，强度高、韧性好、防自损耗、耐用的的技术效果。

Abrasive particle, method for producing the same, and method of use of the same

Disclosed is an abrasive particle having an average particle size of not more than 2 μm and comprising 100 parts by weight of aluminum oxide and/or silicon oxide and 5 to 25 parts by weight of cerium in the form of cerium oxide. A method for producing the same, and a method for planarizing an insulating film on a semiconductor substrate using the abrasive particles are also disclosed.

一种防撞兼改性机床工业专用微晶陶瓷磨料及其制造方法

本发明公开了一种防撞兼改性机床工业专用微晶陶瓷磨料及其制造方法，该机床工业专用微晶陶瓷磨料由两个部分组成，其中第一部分为氧化铝粉、六水硝酸镧、羟基磷灰石在梭式窑中微晶烧结而成的微晶陶瓷；第二部分为三种组份聚合反应获得，组份A为乙烯基烯属不饱和单体、磷二齿配位体、铅粉、活性碳粉末、二氧化钛粉为原料的混合物；组份B为丙烯酸酯基烯属不饱和单体；组份C为含溶质质量分数10％的泡花碱水溶液，第二部分的组成关系为以铅粉、活性碳粉末、二氧化钛粉为芯体，硅酸凝胶为介质，乙烯基烯属不饱和单体与丙烯酸酯基烯属不饱和单体聚合物为模壳的微胶囊结构。本发明具有微晶结构，磨削刃细而密，强度高、韧性好、防自损耗、耐用的的技术效果。

Polycrystalline abrasive grit

Non-fused aluminum oxide-based abrasive mineral

The invention relates to synthetic, non-fused, aluminum oxide-based abrasive mineral having a microcrystalline structure of randomly oriented crystallites comprising a dominant continuous phase of alpha -alumina and a secondary phase, to a method of making the same employing chemical ceramic technology, and to abrasive articles made with the abrasive mineral.

Abrasive material and method

The hardness and microstructure of aluminous abrasives produced from alumina gels are enhanced by introduction of seed material as by wet vibratory milling of the material with alumina media, or by the direct addition of very fine alpha alumina particles in the amount of 1% or less.

Sintered alumina abrasive grain and abrasive product

A sintered alumina abrasive grain constituted of α-alumina crystal grains, wherein the spinel phases do not constitute any continuous phase but deposit as grains at the triple point of the grain boundary and further the spinel phases are substantially homogeneously distributed in the abrasive grain; and an abrasive product obtained from the grain. Preferably, the α-alumina crystal grain has a mean diameter of 1 νm or less and the spinel phase is composed of alumina and an oxide of a metal selected among Ni, Mg and Zn.

Abrasive article containing shaped abrasive particles

An abrasive article comprising a binder and abrasive grits, wherein the abrasive grits comprise abrasive particles having specified shapes. Coated abrasive articles of this invention comprise a backing having at least one layer of abrasive material adhered thereto by means of a binder. A portion of this layer contains abrasive particles having specified shapes. It is preferred that the geometric shape of these abrasive particles be triangular. For triangular-shaped particles, about 35% to about 65% of the particles are oriented with a vertex pointing away from the backing and a base in contact with the binder, with about 35% to about 65% of the particles being oriented with a base pointing away from the backing and a vertex in contact with the binder. It is believed that this configuration brings about the result that the sum of the surface areas of each of the particles in contact with the workpiece remains essentially constant during use, even though the surface area of each individual abrasive particle in contact with the workpiece varies during use. The use of the abrasive particles described herein minimizes the formation of flat surfaces on the cutting regions of the abrasive grits.

Abrasive article containing shaped abrasive particles

An abrasive article comprising a binder and abrasive grits, wherein the abrasive grits comprise abrasive particles having specified shapes. Coated abrasive articles of this invention comprise a backing having at least one layer of abrasive material adhered thereto by means of a binder. A portion of this layer contains abrasive particles having specified shapes. It is preferred that the geometric shape of these abrasive particles be triangular. For triangular-shaped particles, about 35% to about 65% of the particles are oriented with a vertex pointing away from the backing and a base in contact with the binder, with about 35% to about 65% of the particles being oriented with a base pointing away from the backing and a vertex in contact with the binder. It is believed that this configuration brings about the result that the sum of the surface areas of each of the particles in contact with the workpiece remains essentially constant during use, even though the surface area of each individual abrasive particle in contact with the workpiece varies during use. The use of the abrasive particles described herein minimizes the formation of flat surfaces on the cutting regions of the abrasive grits.

研磨粒子およびその製造方法ならびに使用方法

多晶磨料

提供了一种制造大量多晶超硬磨料的方法。该方法包括以下步骤：提供大量的超硬磨粒或大量的用于这种颗粒的前体与适当的溶剂/催化剂的组合物质，将所述物质形成许多生态颗粒，把上述颗粒与处于相邻颗粒之间的隔离介质置于高压/高温装置的反应区，将反应区的内容物置于超硬磨粒结晶学稳定的高温和高压条件下，从反应区回收这样烧结的材料，和除去烧结材料中的隔离介质以制造大量多晶磨料。超硬的研磨材料通常是金刚石或立方氮化硼。

Shelling resistant abrasive grain, a method of making the same and abrasive products

내용 없음. No content.

Alpha alumina abrasive grits, and manufacturing method for them

하나 이상의 이트리아, 및 마그네시아 및/또는 전이원소의 산화물 하나 이상으로 개질시킨 과립 경계부를 갖는 일과 알루미나 연마재 그릿(alpha alumina abrasive grit)은, 이트리아 및/또는 희토류 금속 산화물 개질제의 그릿 몸체내부에서의 농도가 그릿 표면에서 보다 높거나 동일한 경우, 증강된 수준으로 작업을 수행한다. The work and alpha alumina abrasive grit having at least one yttria and granular boundaries modified with one or more oxides of magnesia and / or transition elements are contained within the grit body of the yttria and / or rare earth metal oxide modifiers. If the concentration is higher or equal at the grit surface, work is performed at enhanced levels.

Ceramic Materials, Abrasive Particles, Abrasive Articles, and Methods of Making and Using the Same

본 발명은 무정질 물질, 유리-세라믹 및 이들의 제조 방법을 제공한다. 본 발명의 몇가지 실시양태는 연마 입자를 포함한다. 연마 입자는 접착된 연마재, 피복된 연마재, 부직 연마재 및 연마 브러쉬 등을 비롯한 각종 연마 용품에 도입될 수 있다. The present invention provides amorphous materials, glass-ceramics and methods for their preparation. Some embodiments of the present invention comprise abrasive particles. Abrasive particles can be incorporated into various abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, abrasive brushes, and the like. 무정질 물질, 유리-세라믹, 연마 입자, 연마재 Amorphous Materials, Glass-Ceramic, Abrasive Particles, Abrasives

成形磨料颗粒

本公开提出了一种用于制备磨料颗粒的模具。该模具包括表面和从该表面向下延伸的多个腔。每一个腔包括：颗粒形状部分，该颗粒形状部分具有多边形形状；和破裂部分，该破裂部分与该颗粒形状部分连接。该破裂部分被构造成在应力事件期间从该颗粒形状部分断裂，从而得到破裂形状的磨料颗粒。

磨粒及其制造和使用方法

本发明涉及包含陶瓷(包括玻璃、结晶陶瓷，以及玻璃陶瓷)的磨粒。还涉及它的制造方法。此磨粒可用于各种各样磨具，包括粘接型磨具、涂覆型磨具、非织造型磨具以及研磨刷。

Process for durable sol-gel produced alumina-based ceramics abrasive grain and abrasive products

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Abrasive particles having complex shapes and methods of forming thereof

FIELD: technological processes. SUBSTANCE: invention relates to molding abrasive articles. Shaped abrasive particle contains a particle body having length (l), width (w) and height (h), herewith the body comprises a supporting end surface, a top surface and a side surface extending between the supporting surface and the top surface, herewith the supporting end surface is cruciate, and the top surface features a shape differing from the supporting end surface one. In another version the particle contains a body including the first layer having a first length and the second layer, which overlaps the first layer and has a length between approximately 50 % and approximately 90 % of the length of the first layer. In the third version the particle body contains a three-pointed star with three arms, wherein the second arm and the third arm form an angle which is less than 180°, and the main part has a coefficient of bending, which is not more than 10, defined as the ratio between the highest height (ht) of the main part in one tip of the arm and the minimum height (hi) of the main part in the inner area. In the fourth version the main part of the particle contains a four-pointed star with four arms extending from the central part and with a coefficient of bending, which is not more than 10. EFFECT: improving performance characteristics of abrasive articles and their service life. 30 cl, 3 ex, 69 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК B24D 3/00 (13) 2 602 581 C2 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2014131771/02, 10.01.2013 (24) Дата начала отсчета срока действия патента: 10.01.2013 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.02.2016 Бюл. № 6 (45) Опубликовано: 20.11.2016 Бюл. № 32 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 11.08.2014 (86) Заявка PCT: 2 6 0 2 5 8 1 (73) Патентообладатель(и): (56) Список документов, цитированных в отчете ...

Материалы на основе al2o3, оксидов редкоземельных элементов, zro2 и (или) hfo2 и способы их получения и применения

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 103 084 (13) A C 03 C 3/12 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004103084/03, 02.08.2002 (71) Çà âèòåëü(è): 3Ì Èííîâåéòèâ Ïðîïåðòèç Êîìïàíè (US) (30) Ïðèîðèòåò: 02.08.2001 US 09/922,527 (72) Àâòîð(û): ÐÎÇÅÍÔËÀÍÖ Àíàòîëèé Ç. (US) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 02.03.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Áåçðóêîâà Îëüãà Ìèõàéëîâíà (86) Çà âêà PCT: US 02/24457 (02.08.2002) Àäðåñ äë ïåðåïèñêè: 115054, Ìîñêâà, Ïàâåëåöêà ïë., 2, ñòð.2, Ñêâàéð, Ñàíäåðñ àíä Äåìïñè (Ìîñêâà) ËËÑ, ïàò.ïîâ. Î.Ì.Áåçðóêîâîé (54) ÌÀÒÅÐÈÀËÛ ÍÀ ÎÑÍÎÂÅ AL2O3, ÎÊÑÈÄΠÐÅÄÊÎÇÅÌÅËÜÍÛÕ ÝËÅÌÅÍÒÎÂ, ZRO2 È R U Ôîðìóëà èçîáðåòåíè 1. Ñòåêëî, ñîäåðæàùåå Al2Î3, îêñèä ðåäêîçåìåëüíîãî ýëåìåíòà (REO) è ïî ìåíüøåé ìåðå îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïðè÷åì ïî ìåíüøåé ìåðå 85 ìàñ.% ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 è ñòåêëî ñîäåðæèò ïî ìåíüøåé ìåðå 30 ìàñ.% Al2Î3, ïî ìåíüøåé ìåðå 20 ìàñ.% REO è 15-30 ìàñ.% ZrO2, ïðè ýòîì ïðîöåíòíîå ñîäåðæàíèå îïðåäåë åòñ îò îáùåé ìàññû ñòåêëà. 2. Ñïîñîá ïîëó÷åíè ñòåêëà ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ïî ìåíüøåé ìåðå 80% ìàñ. îáùåé ìàññû ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ZrO2. 3. Êåðàìèêà, ñîäåðæàùà ñòåêëî ïî ï.1. 4. Ñïîñîá ïîëó÷åíè ñòåêëà, ñîäåðæàùåãî Al2O3, REO è ïî ìåíüøåé ìåðå îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïðè÷åì ïî ìåíüøåé ìåðå 85 ìàñ.% ñòåêëà ïðèõîä òñ íà ñîâîêóïíóþ äîëþ Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 è ñòåêëî ñîäåðæèò ïî ìåíüøåé ìåðå 30 ìàñ.% Al2Î3, ïî ìåíüøåé ìåðå 20 ìàñ.% REO è 15-30 ìàñ.% ZrO2, ïðè ýòîì ïðîöåíòíîå ñîäåðæàíèå îïðåäåë åòñ îò îáùåé ìàññû ñòåêëà, ïðåäóñìàòðèâàþùèé ñëåäóþùèå îïåðàöèè: ðàñïëàâëåíèå ñûðü äë ïîëó÷åíè ïî ìåíüøåé ìåðå îäíîãî èç ñîåäèíåíèé Al2Î3, REO è ïî ìåíüøåé ìåðå îäíîãî èç îêñèäîâ ZrO 2 èëè HfO2 äë ôîðìèðîâàíè ðàñïëàâà è îõëàæäåíèå ðàñïëàâà äë ïîëó÷åíè ñòåêëà. 5. Ñïîñîá ïîëó÷åíè êåðàìèêè, ...

Sintered aluminous abrasive and method of producting the same

내용 없음. No content.

Материалы на основе оксида алюминия, оксида иттрия, оксида циркония/оксида гафния и способы их изготовления и использования

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 101 636 (13) A C 03 C 3/12, 10/00 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004101636/03, 02.08.2002 (71) Çà âèòåëü(è): 3Ì Èííîâåéòèâ Ïðîïåðòèç Êîìïàíè (US) (30) Ïðèîðèòåò: 02.08.2001 US 09/922,530 (72) Àâòîð(û): ÐÎÇÅÍÔËÀÍÖ Àíàòîëèé Ç. (US) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 02.03.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Áåçðóêîâà Îëüãà Ìèõàéëîâíà (86) Çà âêà PCT: US 02/24658 (02.08.2002) Àäðåñ äë ïåðåïèñêè: 115054, Ìîñêâà, Ïàâåëåöêà ïë., 2, ñòð.2, Ñêâàéð, Ñàíäåðñ àíä Äåìïñè (Ìîñêâà) ËËÑ, ïàò.ïîâ. Î.Ì.Áåçðóêîâîé (54) ÌÀÒÅÐÈÀËÛ ÍÀ ÎÑÍÎÂÅ ÎÊÑÈÄÀ ÀËÞÌÈÍÈß, ÎÊÑÈÄÀ ÈÒÒÐÈß, ÎÊÑÈÄÀ R U Ôîðìóëà èçîáðåòåíè 1. Ñòåêëî, ñîäåðæàùåå Al2O3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, â êîòîðîì ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà ñîñòàâë þò â ñóììå Al2O3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, à ñîäåðæàíèå Al2Î3 â ñòåêëå ñîñòàâë åò êàê ìèíèìóì 30 ìàñ.%, ñîäåðæàíèå Y2Î3 ñîñòàâë åò êàê ìèíèìóì 20 ìàñ.% è ñîäåðæàíèå ZrO 2 íàõîäèòñ â äèàïàçîíå îò 15,43 äî 30 ìàñ.% îò îáùåé ìàññû ñòåêëà. 2. Ñòåêëî ïî ï.1, îòëè÷àþùååñ òåì, ÷òî ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà ñîñòàâë þò â ñóììå Al2Î3, Y2O3 è ZrO2. 3. Êåðàìèêà, ñîäåðæàùà ñòåêëî ïî ï.1. 4. Ñïîñîá èçãîòîâëåíè ñòåêëà, ñîäåðæàùåãî Al2Î3, Y2Î3 è êàê ìèíèìóì îäèí èç îêñèäîâ ZrO2 èëè HfO2, ïî êîòîðîìó ïî ìåíüøåé ìåðå 80% îò ìàññû ñòåêëà - ýòî ñóììà Al 2O3, Y2Î3 è êàê ìèíèìóì îäíîãî èç îêñèäîâ ZrO2 èëè HfO2, à ñîäåðæàíèå Al2Î3 â ñòåêëå ñîñòàâë åò êàê ìèíèìóì 30 ìàñ.%, ñîäåðæàíèå Y2Î3 ñîñòàâë åò êàê ìèíèìóì 20 ìàñ.% è ñîäåðæàíèå ZrO2 íàõîäèòñ â äèàïàçîíå îò 15,43 äî 30 ìàñ.% îò îáùåé ìàññû ñòåêëà, ïðè÷åì ñïîñîá âêëþ÷àåò â ñåá : ðàñïëàâëåíèå èñòî÷íèêîâ êàê ìèíèìóì Al2Î3, Y2Î3 è êàê ìèíèìóì îäíîãî èç îêñèäîâ ZrO2 èëè HfO2 ñ ïîëó÷åíèåì ðàñïëàâà; è îõëàæäåíèå ðàñïëàâà ñ ïîëó÷åíèåì ñòåêëà. 5. Ñïîñîá èçãîòîâëåíè êåðàìèêè, ñîäåðæàùåé ñòåêëî, ñîäåðæàùåå Al2Î3, Y2Î3 è êàê ìèíèìóì îäèí èç ...

Abrasive particles and preparation method thereof

본 발명은 결정형 세라믹의 알파 알루미나계 연마 입자 및 이의 제조 방법에 관한 것이다. 상기 연마 입자는, 코팅 연마재, 결합 휠, 및 3차원적 저밀도 연마재와 같은 연마 제품내에 삽입될 수 있다. The present invention relates to alpha alumina-based abrasive particles of a crystalline ceramic and a method of manufacturing the same. The abrasive particles can be embedded in abrasive products such as coated abrasives, bonding wheels, and three-dimensional low density abrasives.

Abrasive grits formed of ceramic containing oxides of aluminium, and yttrium, method of making and using the same and products made therewith

내용 없음. No content.

Cerium based polishing particle and the manufacturing method thereof

본 발명은 세륨계 연마입자 및 그 제조방법에 관한 것으로서, 입자의 형상 및 크기를 제어할 수 있고, CMP 연마 시 디싱 감소에 유리하며, 결함 및 스크래치를 줄일 수 있으므로 반도체 디바이스 제조 시 생산성 향상을 기대할 수 있다. The present invention relates to a cerium-based abrasive particle and a method for manufacturing the same, and it is possible to control the shape and size of the particle, to reduce dishing during CMP polishing, and to reduce defects and scratches. I can.

Abrasive Particles and Methods of Making and Using the Same

본 발명은 연마 입자 및 그의 제조 방법에 관한 것이다. 본 발명의 실시양태를 사용하여 연마 입자를 제조할 수 있다. 이 연마 입자는 접착된 연마재, 피복된 연마재, 부직 연마재 및 연마 브러쉬를 포함한 다양한 연마 용품에 도입될 수 있다. The present invention relates to abrasive particles and methods for their preparation. Embodiments of the invention can be used to prepare abrasive particles. These abrasive particles can be incorporated into a variety of abrasive articles, including bonded abrasives, coated abrasives, nonwoven abrasives, and abrasive brushes. 무정질 물질, 유리-세라믹, 연마 입자, 연마재 Amorphous Materials, Glass-Ceramic, Abrasive Particles, Abrasives

연마 입자 및 이의 제조방법(abrasive grain and method for making the same)

본 발명은 결정형 세라믹의 알파 알루미나계 연마 입자 및 이의 제조 방법에 관한 것이다. 상기 연마 입자는, 코팅 연마재, 결합 휠 및 3차원적 저밀도 연마재와 같은 연마 제품내에 삽입될 수 있다.

Diamond-metallic composite material

FIELD: process engineering. SUBSTANCE: invention relates to powder metallurgy, particularly, to materials intended for production of diamond-metallic composite materials. It may be used as hard or abrasive material and for making centrifuge nozzles. Diamond particles are mixed with those of metallic filler to produce mix for moulding billet therefrom. Said billet is subjected to pre-sintering by heating to ≤500°C and impregnated with one or more wetting elements or one or more wetting alloys. Impregnation is performed in vacuum or in inert gas at <200 bar. EFFECT: higher density, thermal expansion, crack resistance and solderability. 22 cl, 2 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 448 827 (13) C2 (51) МПК B24D 3/06 (2006.01) C22C 26/00 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2010123191/02, 30.10.2008 (24) Дата начала отсчета срока действия патента: 30.10.2008 (73) Патентообладатель(и): АЛЬФА ЛАВАЛЬ КОРПОРЕЙТ АБ (SE) R U Приоритет(ы): (30) Конвенционный приоритет: 08.11.2007 SE 0702474-8 (72) Автор(ы): ЧЕНЬ Цзе (SE) (43) Дата публикации заявки: 20.12.2011 Бюл. № 35 2 4 4 8 8 2 7 (45) Опубликовано: 27.04.2012 Бюл. № 12 (56) Список документов, цитированных в отчете о поиске: US 4246006 А, 20.01.1981. RU 2151814 С1, 27.06.2000. RU 2131347 С1, 10.06.1999. RU2113531 С1, 20.06.1998. US 5116568 А, 26.05.1992. GB 2006733 А, 10.05.1979. 2 4 4 8 8 2 7 R U (86) Заявка PCT: SE 2008/051235 (30.10.2008) C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 08.06.2010 (87) Публикация заявки РСТ: WO 2009/061265 (14.05.2009) Адрес для переписки: 129090, Москва, ул. Б. Спасская, 25, стр.3, ООО "Юридическая фирма Городисский и Партнеры" (54) АЛМАЗОМЕТАЛЛИЧЕСКИЙ КОМПОЗИТ (57) Реферат: Изобретение относится к порошковой металлургии, в частности к получению алмазометаллических композитов. Может использоваться в качестве твердого или абразивного материала, а также для изготовления сопел ...

Method of manufacturing abrasive particles, chemical mechanical polishing slurry and method of manufacturing the same

연마 입자의 제조 방법, 화학적 기계적 연마 슬러리 및 그 제조 방법이 개시된다. 연마 입자의 제조 방법은 화학적 기계적 연마 슬리리용 연마 입자의 제조 방법에 있어서, 원료 전구체를 준비하는 단계; 및 원료 전구체에 마이크로웨이브를 조사하여 원료 전구체를 하소하는 단계를 포함한다. Disclosed are a method for producing abrasive particles, a chemical mechanical polishing slurry, and a method for producing the abrasive particles. Method for producing abrasive particles, the method for producing abrasive particles for chemical mechanical polishing slurry, preparing a raw material precursor; And irradiating the raw material precursor with microwave to calcinate the raw material precursor.

Ceramic materials, abrasive particles, abrasive articles, and methods of making and using the same

本发明涉及无定形材料，含有占所述的无定形材料总重量的至少35％的Al 2 O 3 和选自Y 2 O 3 ，REO，ZrO 2 ，TiO 2 ，CaO，Cr 2 O 3 ，MgO，NiO，CuO和它们的复合金属氧化物、除Al 2 O 3 之外的一种金属氧化物。在特定的实施方案中，所述的无定形材料是玻璃、玻璃陶瓷等。本发明还涉及使用所述无定形材料来制造玻璃陶瓷、磨料、磨粒、磨具的方法。

Method of producing alpha-aluminum oxide (versions), abrasive particles and abrasive material (versions)

FIELD: methods of abrasive materials production. SUBSTANCE: sol-gel of aluminum oxide which is dried but not calcined may be converted into power by blasting in supply of dried gel into furnace in which temperature is maintained at value exceeding that at which volatile materials capable of volatilize are removed from gel particles. At sufficiently high temperature, calcination is sufficient for formation of fully densified particles of alpha-aluminum oxide of size suitable for direct use in capacity of fine hard abrasive particles or for preparation of abrasive materials. EFFECT: higher efficiency. 23 cl, 2 dwg, 3 tbl, 6 ex ДД Э9зЗУ7Ьс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) ВО ‘2 148 567 ' 9 МК С 04 В 35/141, С 09 К 3/44, С 13) СЛ ОЛ Е 7/44 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 97118359/03, 21.03.1996 (24) Дата начала действия патента: 27.03.1996 (30) Приоритет: 05.04.1995 Ц$ 08/417,169 (46) Дата публикации: 10.05.2000 (56) Ссылки: ЕР 0176476 АЛ, 02.04.1986. Ц 1709901 АЗ, 30.01.1992. ОЕ 4118564 АЛ, 17.12.1992. 4$ 5213591 А, 25.05.1993. $4 1104798 АЛ, 23.08.1991. 4$ 5090968 А, 25.02.1992. ($ 5236411 А, 17.08.1993. ($ 5259147 А, 09.11.1993. ЕР 0631986 АЛ, 04.01.1995. (85) Дата перевода заявки РСТ на национальную фазу: 05.11.1997 (86) Заявка РСТ: 1$ 96/04137 (27.03.1996) (87) Публикация РСТ: М/О 96/32226 (17.10.1996) (98) Адрес для переписки: 103104, Москва, Б.Палашевский пер. 3, офис 2, "Гоупинг, Страти и Хендерсон", Дементьеву В.Н. (71) Заявитель: СЕНТ-ГОБЭН ИНДАСТРИАЛ КЕРАМИКС, ИНК. (95) (72) Изобретатель: Гэрг Эджей К. (ЦЭ), Каунд Эрап К. (СА), Орне Лоуренс (4$), Юнг МаркР. (Ц$) (73) Патентообладатель: СЕНТ-ГОБЭН ИНДАСТРИАЛ КЕРАМИКС, ИНК. (95) (74) Патентный поверенный: Дементьев Владимир Николаевич (54) СПОСОБ ПОЛУЧЕНИЯ АЛЬФА-ОКСИДА АЛЮМИНИЯ (ВАРИАНТЫ), АБРАЗИВНЫЕ ЧАСТИЦЫ И АБРАЗИВНЫЙ МАТЕРИАЛ (ВАРИАНТЫ) (57) Реферат: Золь-гель оксида алюминия, который высушен, но не обожжен, может быть взрывным образом ...

改良されたαアルミナ砥粒

(57)【要約】 酸化ルビジウムと酸化セシウムから選択されたアルカリ金属酸化物を含む改良された研磨性能を有する種添加ゾルゲルアルミナ砥粒。

Modified sol-gel alumina

Polycrystalline abrasive grit

다수의 다결정질 초경 연마 그릿의 제조방법이 제공된다. 상기 방법은 초경 연마 입자들의 괴성물, 또는 초경 연마 입자들의 전구체와 적합한 용매/촉매의 조합 괴성물을 제공하는 단계; 상기 괴성물을 다수의 미가공 상태의 과립으로 형성하는 단계; 상기 과립을, 인접하는 과립들 사이를 분리시키는 매체와 함께 고압/고온 장치의 반응 대역에 위치시키는 단계; 상기 반응 대역의 내용물을, 초경 연마 입자가 결정학적으로 안정한 승온 및 승압 조건에 적용하는 단계; 상기 반응 대역으로부터 소결된 물질을 회수하는 단계; 및 상기 소결된 물질에서 분리 매체를 제거하여 다수의 다결정질 연마 그릿을 생성하는 단계를 포함한다. 초경 연마재는 일반적으로 다이아몬드 또는 입방정계 질화붕소이다.

Preparation method of low-temperature sintered alumina ceramic abrasive

本发明属于氧化铝陶瓷磨料技术领域，具体涉及一种低温烧结氧化铝陶瓷磨料的制备方法，包括以下步骤：（1）制备氧化铝晶种；（2）氧化铝晶种诱导工业氧化铝转相得到α‑氧化铝；（3）将α‑氧化铝进行研磨，得到氧化铝粉体；（4）将氧化铝粉体中加入烧结助剂后进行研磨、烘干，得到氧化铝粉料；（5）将氧化铝粉料进行烧结，得到氧化铝陶瓷粗料；（6）将氧化铝陶瓷粗料进行破碎分级，得到氧化铝陶瓷磨料。原料成本低，烧结温度低，节约能耗，设备要求低，设备投资少。

Al2O3-Rare Earth Oxide-ZrO2/HfO2 Materials, and Methods of Making and Using the Same

Al 2 O 3 -희토류 산화물-ZrO 2 /HfO 2 세라믹 (유리, 결정성 세라믹 및 유리-세라믹을 포함) 및 그의 제조 방법. 본 발명에 따른 세라믹은 유리 비드, 물품(예, 판), 섬유, 입자 및 얇은 피복로 만들어지거나, 형성되거나 전환될 수 있다. 상기 입자 및 섬유는 예를 들면 복합재(예, 세라믹, 금속 또는 중합체 매트릭스 복합재)에서 절연, 충진재 또는 보강재로서 유용하다. 얇은 피복은 예를 들면 열 관리용 뿐만 아니라 마모를 수반하는 응용에서 보호 피복으로서 유용할 수 있다. 본 발명에 따른 특정 세라믹 입자는 연마 물품으로서 특히 유용할 수 있다. 알루미나, 희토류 산화물, 세라믹, 결정성 세라믹, 유리-세라믹, 연마 물품 Al 2 O 3 -rare earth oxide-ZrO 2 / HfO 2 ceramics (including glass, crystalline ceramics and glass-ceramics) and methods of making the same. The ceramics according to the invention can be made, formed or converted into glass beads, articles (eg plates), fibers, particles and thin coatings. The particles and fibers are useful as insulation, fillers or reinforcements in, for example, composites (eg ceramic, metal or polymer matrix composites). Thin coatings can be useful, for example, as protective coatings in thermal management as well as in applications involving abrasion. Certain ceramic particles according to the present invention may be particularly useful as abrasive articles. Alumina, Rare Earth Oxides, Ceramics, Crystalline Ceramics, Glass-Ceramics, Abrasive Articles

Shelling-resistant abrasive grain, and its making method

提供了表面积提高了的烧结陶瓷磨粒及其制备方法。加入这种磨粒可改善“抗飞”磨料制品，涂覆的磨料、磨轮和无纺磨料。陶瓷磨粒的制备方法如下：提供由α-氧化铝前体构成的第一种颗粒；导入细颗粒，这种细颗粒在第一种颗粒的烧结条件下能直接烧结到第一种颗粒的表面上；在烧结条件下加热混合物，使细颗粒自粘结到每一个第一种颗粒的表面上。

Abrasive Grain Containing Manganese Oxide (ABRASIVE GRAIN CONTAINING MAN-GANESE OXIDE)

본 발명은 내부에 산화 망간을 함유하는 연마재 그레인에 관한 것이다. 산화 망간의 함유는 연마재 그레인의 형성도중 전이 알루미나(들)의 알파 알루미나(들)로의 전이 온도를 감소시키기 위해 사용될 수 있다. 추가로, 산화 망간의 존재는 초미세의 작은 면이 있는 미세구조를 보유하는 소결된 연마재 그레인을 생성하기 위해 사용될 수 있다. 상기 연마재 그레인은 피복된 연마재, 3차원 저밀도 연마재 및 결합된 연마재 같은 연마재 제품에 유용한다.

METHOD FOR PRODUCING GLASS PRODUCTS AND GLASS-CERAMIC PRODUCTS OBTAINED IN SUCH METHOD

ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß (19) RU (51) ÌÏÊ 7 (11) 2004 101 640 (13) A C 03 B 19/10 ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÇÀßÂÊÀ ÍÀ ÈÇÎÁÐÅÒÅÍÈÅ (21), (22) Çà âêà: 2004101640/03, 02.08.2002 (71) Çà âèòåëü(è): 3Ì Èííîâåéòèâ Ïðîïåðòèç Êîìïàíè (US) (30) Ïðèîðèòåò: 02.08.2001 US 09/922,526 (72) Àâòîð(û): ÐÎÇÅÍÔËÀÍÖ Àíàòîëèé Ç. (US) (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 02.03.2004 (74) Ïàòåíòíûé ïîâåðåííûé: Áåçðóêîâà Îëüãà Ìèõàéëîâíà (86) Çà âêà PCT: US 02/24523 (02.08.2002) Àäðåñ äë ïåðåïèñêè: 115054, Ìîñêâà, Ïàâåëåöêà ïë., 2, ñòð.2, Ñêâàéð, Ñàíäåðñ àíä Äåìïñè (Ìîñêâà) ËËÑ, ïàò.ïîâ. Î.Ì.Áåçðóêîâîé (54) ÑÏÎÑÎÁ ÈÇÃÎÒÎÂËÅÍÈß ÈÇÄÅËÈÉ ÈÇ ÑÒÅÊËÀ È ÑÒÅÊËÎÊÅÐÀÌÈ×ÅÑÊÈÅ ÈÇÄÅËÈß, R U Ôîðìóëà èçîáðåòåíè 1. Ñïîñîá èçãîòîâëåíè èçäåëè èç ñòåêëà, âêëþ÷àþùèé â ñåá : ðàçìåùåíèå ïîäëîæêè ñ íàðóæíîé ïîâåðõíîñòüþ; ïîëó÷åíèå ïî ìåíüøåé ìåðå ïåðâè÷íîãî ñòåêëà, êîòîðîå ñîñòîèò êàê ìèíèìóì èç äâóõ ðàçëè÷íûõ îêñèäîâ ìåòàëëîâ, õàðàêòåðèçóåòñ Òg è Òõ, ïðè÷åì ðàçíèöà ìåæäó Òg è Òõ ïåðâè÷íîãî ñòåêëà ñîñòàâë åò êàê ìèíèìóì 5 Ê, à ñàìî ñòåêëî ñîäåðæèò ìåíåå 20 ìàñ.% SiO2, ìåíåå 20 ìàñ.% Â2Î3 è ìåíåå 40 ìàñ.% P2O5; íàãðåâàíèå ïåðâè÷íîãî ñòåêëà äî òåìïåðàòóðû ñâûøå Òg òàê, ÷òîáû õîò áû ÷àñòü ñòåêëà ñìà÷èâàëà ïî ìåíüøåé ìåðå ÷àñòü íàðóæíîé ïîâåðõíîñòè ïîäëîæêè; è îõëàæäåíèå ñòåêëà ñ ïîëó÷åíèåì ïðîäóêòà, ïðåäñòàâë þùåãî ñîáîé êåðàìè÷åñêîå èçäåëèå ñî ñòåêëîì, ïðèêðåïëåííûì êàê ìèíèìóì ê ÷àñòè íàðóæíîé ïîâåðõíîñòè ïîäëîæêè. 2. Ñïîñîá ïî ï.1, îòëè÷àþùèéñ òåì, ÷òî ðàçíèöà ìåæäó Òg è Òõ ñîñòàâë åò ïî ìåíüøåé ìåðå 25 Ê. 3. Ñïîñîá ïî ï.2, îòëè÷àþùèéñ òåì, ñòåêëî õàðàêòåðèçóåòñ T1, a ñîîòíîøåíèå Òg è T1 ñîñòàâë åò ïî ìåíüøåé ìåðå 0,5. 4. Ñïîñîá ïî ï.3, îòëè÷àþùèéñ òåì, ÷òî ïåðâè÷íîå ñòåêëî ñîäåðæèò ñóììàðíî ìåíåå 40 ìàñ.% ñòåêëà, ñîñòî ùåãî èç SiO2, Â2Î3 è Ð2O5, ïî îòíîøåíèþ ê îáùåé ìàññå ñòåêëà. 5. Ñïîñîá ïî ï.3, îòëè÷àþùèéñ òåì, ÷òî ñòåêëî - ýòî ñèñòåìà REO-Al2O3. 6. Ñïîñîá ïî ï.5, îòëè÷àþùèéñ òåì, ÷òî ñòåêëî ñîäåðæèò â ñóììå êàê ìèíèìóì 80 ìàñ.% Al2Î3 è ...

Abrasive grit with high alumina content grain in particular for application in applied and sintered abrasives for example in scarfing grinders for slabs of steel alloys

本发明涉及一种主要包含烧结氧化铝的磨粒，其特征在于，它包含大于96重量％的氧化铝、0.1－3重量％的二氧化钛和0.1－3重量％的氧化锰，二氧化钛+氧化锰的总量小于4重量％。优选地，二氧化钛和/或氧化锰的重量含量大于或等于0.5％。同样优选地，二氧化钛和/或氧化锰的重量含量小于或等于1.3％。

Grinding composite body and preparation method thereof

本发明涉及磨料制品领域，尤指可应用于研磨陶瓷工件或蓝宝石等硬脆材料的一种研磨复合体及其制备方法，所述的复合体主要由烧结复合磨料和树脂组成；其中所述烧结复合磨料由金刚石和无机粘结剂组成；所述的金刚石为单晶金刚石或多晶金刚石或它们的组合物，金刚石的颗粒粒度为0.2~380 um；所述烧结复合磨料中，金刚石含量为10%~80%；所述无机粘结剂由氧化硅、氧化铋、氧化硼、氧化铈、氧化锌、氧化铁及氧化铜混合组成；本发明烧结复合磨粒具有极高的硬度和强度，金刚石被紧实粘结，不易脱离，同时烧结复合磨料与树脂的结合力增强，磨削过程中可抵抗脱落，耐受性更强，从而提高了硬脆材料的切削率和延长了固结磨料产品的寿命。

Manufacturing method of ceramic block for 50G equipment for sapphire wafer polishing

본 발명은 파이어 웨이퍼 폴리싱용 50G 장비 대응 세라믹 블록의 제조방법에 관한 것으로, 더욱 자세하게는, 세라믹 블록의 제조방법에 있어서, 사파이어 웨이퍼의 손상을 주지 않도록 알루미나 파우더와 바인더를 혼합하여 제조하려는 세라믹 블록의 형상에 따른 오목 또는 볼록 형태의 그린가공을 하되, 소성 시 500℃에서 바인더를 제거하고, 1100℃에서 1차수축을 수행하며, 1650℃에서 2차수축이 되도록 하여, 형상 부위별 소성 시 소결 수축율을 고려하여 그린가공 후 소성하고, 상기 소성된 세라믹 블록을 형상을 황삭 또는 정삭 형태로 형상을 가공하며, 상기 가공된 세라믹 블록을 랩핑, 폴리싱 가공을 통해 세라믹 블록의 평탄도와 표면조도값이 균일해질 수 있게 정밀가공함으로써, 세라믹 블록은 50G 사이즈 대응 세라믹 블록 개발을 통해 수입대체 효과를 가지고, 성형 공정 최적화를 통한 그린 가공 공정 단축이 되며, 소성에 따른 수축율 데이터베이스 구축을 통한 형상 및 정밀 가공 공정 단축이 되고, 가공 공정 단축을 통한 원가 절감이 되며, 원가 절감에 따른 제품 납품 단가 경쟁력 확보가 가능한 유용한 발명인 것이다.

Platy alumina and a method for producing the same

본 발명은 응집물, 분립 또는 단편이 거의 없는 신규한 판상 알루미나에 관한 것이다. 본 발명의 생성물은 극소전자 공학 적용용 기판 웨이퍼의 래핑에 매우 유리한다. 이러한 생성물을 제조하는 방법이 또한 기술되어 있다. The present invention relates to a novel flaky alumina having few aggregates, splits or fragments. The products of the present invention are highly advantageous for the lapping of substrate wafers for microelectronics applications. Methods of making such products are also described.

Abrasive particles containing sintered, polycrystalline zirconia

公开了磨粒和磨粒的制备方法。该磨粒可掺入各种磨具中，包括粘结磨具、涂覆磨具、非织造磨具和研磨刷。

Method of manufacturing a hydroxyapatite powder for blast

블라스트용 하이드록시아파타이트 분말의 제조 방법에 있어서, 인산칼슘을 포함하는 원료 및 용매를 이용하여 현탁액을 형성하고, 상기 현탁액을 건조하여 응집체를 형성한다. 이어서, 상기 현탁액을 제1 온도로 열처리하여 소결체를 형성한 후, 상기 소결체를 분쇄하여 예비 하이드록시아파타이트 분말을 형성한다. 이어서, 상기 예비 하이드록시아파타이트 분말을 상기 제1 온도보다 높은 제2 온도로 열처리하여 30 이하의 비커스 경도의 편차를 갖는 하이드록시아파타이트 분말을 형성한다. In the method for producing a hydroxyapatite powder for blasting, a suspension is formed using a raw material and a solvent containing calcium phosphate, and the suspension is dried to form an aggregate. Next, the suspension is heat-treated at a first temperature to form a sintered body, and the sintered body is pulverized to form a pre-hydroxyapatite powder. Next, the preliminary hydroxyapatite powder is heat-treated at a second temperature higher than the first temperature to form a hydroxyapatite powder having a Vickers hardness of 30 or less.

Abrasive article and abrasive material with coating

FIELD: abrasive working. SUBSTANCE: abrasive article comprises agglomerate grains bonded with the substrate by means of a binder. The abrasion particles in the agglomerate grains are bonded together to form a three-dimensional structure by means of a binder for the particles, which is a dispersion phase. The adjacent particles in the agglomerate are bonded so that their packing is loose and is lower at least by 2% than that for the particles in the individual condition. The grains of the agglomerate are made by tumbling the particles and binder in the rotating rusting furnace. EFFECT: expanded functional capabilities. 39 cl, 7 dwg, 6 tbl, 9 ex ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 279 966 (13) C2 (51) ÌÏÊ B24D 3/00 (2006.01) B24D 11/00 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ÈÍÒÅËËÅÊÒÓÀËÜÍÎÉ ÑÎÁÑÒÂÅÍÍÎÑÒÈ, ÏÀÒÅÍÒÀÌ È ÒÎÂÀÐÍÛÌ ÇÍÀÊÀÌ (12) ÎÏÈÑÀÍÈÅ ÈÇÎÁÐÅÒÅÍÈß Ê ÏÀÒÅÍÒÓ (21), (22) Çà âêà: 2004136289/02, 21.03.2003 (30) Êîíâåíöèîííûé ïðèîðèòåò: 14.05.2002 (ïï.1-39) US 10/145,367 (73) Ïàòåíòîîáëàäàòåëü(è): ÑÝÍÒ-ÃÎÁÝÍ ÀÁÐÀÇÈÂÑ, ÈÍÊ. (US) (43) Äàòà ïóáëèêàöèè çà âêè: 27.06.2005 R U (24) Äàòà íà÷àëà îòñ÷åòà ñðîêà äåéñòâè ïàòåíòà: 21.03.2003 (72) Àâòîð(û): ÊÍÝÏÏ Êðèñòîôåð Å. (CA), ÃÈÇÅËÈÍ Îëèâüåð Ëåîí-Ìàðè Ôåðíàíä (US), ËÎÐÅÍÇ Êåííåò (US) (45) Îïóáëèêîâàíî: 20.07.2006 Áþë. ¹ 20 2 2 7 9 9 6 6 (56) Ñïèñîê äîêóìåíòîâ, öèòèðîâàííûõ â îò÷åòå î ïîèñêå: US 6056794 À, 02.05.2000. ÏÀÍÜÊΠË.À. è äð. Îáðàáîòêà èíñòðóìåíòàìè èç øëèôîâàëüíîé øêóðêè, Ë., Ìàøèíîñòðîåíèå, 1988, ñ.8, ðèñ.1.1. SU 105155 À, 13.11.1957. (85) Äàòà ïåðåâîäà çà âêè PCT íà íàöèîíàëüíóþ ôàçó: 08.12.2004 2 2 7 9 9 6 6 R U (87) Ïóáëèêàöè PCT: WO 03/097762 (27.11.2003) C 2 C 2 (86) Çà âêà PCT: US 03/08992 (21.03.2003) Àäðåñ äë ïåðåïèñêè: 119034, Ìîñêâà, Ïðå÷èñòåíñêèé ïåð., ä.14, ñòð. 1, 4 ýòàæ, Ãîóëèíãç Èíòåðíýøíë ÈÍÊ., Â.Í.Äåìåíòüåâó (54) ÀÁÐÀÇÈÂÍÛÅ ÈÇÄÅËÈß È ÀÁÐÀÇÈÂÍÛÉ ÌÀÒÅÐÈÀË Ñ ÏÎÊÐÛÒÈÅÌ (57) Ðåôåðàò: Èçîáðåòåíè îòíîñ òñ ê îáëàñòè àáðàçèâíîé îáðàáîòêè è ìîãóò áûòü èñïîëüçîâàíû ïðè ñîçäàíèè àáðàçèâíûõ èçäåëèé è ìàòåðèàëîâ ñ ...

Ceramic nanocomposite powder reinforced with carbon nanotubes and method for producing the same