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| Number | Title | Issue Date |
| 7442661 | Boron carbide based sintered compact and method for preparation thereof A boron carbide based sintered body having a four-point flexural strength of at least 400 MPa and a fracture toughness of at least 2.8 MPa·m1/2, which has the following two preferred embodiments. (1) A boron carbide-titanium diboride sintered body obtain... | 10/28/2008 |
| 7273581 | Process for in-situ preparation of aluminia—(Ti,Zr) borides composite The present invention relates to an improved process for in-situ preparation of alumina-(Ti,Zr) borides composite. The present invention particularly relates to fast and in-situ process for synthesis and consolidation of Al2O3—Zr/Ti B2 | 09/25/2007 |
| 6824862 | Fiber-reinforced ceramic composite Fiber-reinforced ceramic composites contain bundles, tows or hanks of long fibers, wherein the long fiber bundles, tows or hanks are completely surrounded by a short fiber-reinforced matrix, with the long and short fibers having, independently of one another, a mean... | 11/30/2004 |
| 6645424 | Combustion synthesis of glass (Al2O3-CaO-X-Y) ceramic (TiB2) composites The present invention is directed to the preparation of in-situ formation of a series of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique with advantages of processing simplicity as well as the potential of cost ... | 11/11/2003 |
| 6193928 | Process for manufacturing ceramic metal composite bodies, the ceramic metal composite bodies and their use A process for manufacturing ceramic metal composite bodies, the ceramic metal composite bodies and their use. The process is based on molten infiltration and the simultaneous or delayed exchange reaction of ceramic or metal ceramic un-fired bodies or sint... | 02/27/2001 |
| 6090321 | Process for controlling the microstructural bias of multi-phase composites A process for controlling and thus predicting the microstructural bias of multi-phase composites to obtain preferential positioning of the component compounds in their morphology and position in the resulting microstructure to cause the grains of a first ... | 07/18/2000 |
| 5968428 | Molding method for powder particles Disclosed is a molding method for powder particles, which is excellent in molding performance, and which makes it possible to obtain a preliminary molded product excellent in strength by enhancing mutual bonding between particles in the preliminary molded... | 10/19/1999 |
| 5928979 | Method for manufacturing composite ceramics The present invention relates to ceramics and a method for making ceramics having very little dimensional change after sintering and high dimensional accuracies, so that the characteristics of inorganic functional material are fully maintained and utilize... | 07/27/1999 |
| 5866059 | Polycrystalline BCN substance and method of producing same In order to produce a new substance having a diamond crystal structure, the following steps are taken in order. First, a graphite-like substance is prepared which contains boron (B), carbon (C) and nitrogen (N) as main elements. Then, the graphite-like su... | 02/02/1999 |
| 5853654 | Process and apparatus for making ceramic articles A process and apparatus for making a ceramic article, especially pipes and tubes of ceramic material such as silicon carbide, in which the article is formed by projecting a ceramic powder mixture comprising refractory particles and combustible particles a... | 12/29/1998 |
| 5849242 | Boron nitride Boron nitride articles are made by heat treating turbostratic BN powder to reduce its oxygen content to 5-8% (mesographitic BN), washing this heat-treated powder, mixing it with 5-8% amorphous boron, shaping the mixture, explosively compacting the shape b... | 12/15/1998 |
| 5792417 | Method of manufacturing aluminoborate glass-ceramic composite In-situ formation of glass-ceramic composites by the Self-propagating High temperature Synthesis (SHS) technique. The reagents used are: TiO2, B2 O, Al, Ti, B and MO where MO represents BaO, MgO, CaO and other similar oxides. BaCO | 08/11/1998 |
| 5756411 | Sintered body of silicon nitride and method of producing the same The invention reduces the time required for nitriding in the process of reaction sintering for production of a sintered body of silicon nitride, thereby improving productivity, and provides a sintered body of silicon nitride having sufficient compactness ... | 05/26/1998 |
| 5468427 | Process for making ultra-fine ceramic particles A process for producing ultra-fine ceramic particles in which droplets are formed from a ceramic precursor mixture containing a metal cation, a nitrogen-containing fuel, a solvent, and an anion capable of participating in an anionic oxidation-reduction re... | 11/21/1995 |
| 5366686 | Method for producing articles by reactive infiltration A method for producing an article including a refractory compound by infiltrating a preform with a liquid infiltrant and initiating a reaction between the preform and the liquid infiltrant to establish a reaction front which propagates in a direction oppo... | 11/22/1994 |
| 5145619 | Combustion-synthesis process for making friction materials A process in which a mixture containing aluminum, iron, and one or more metallic oxides is used. This mixture is formed into a shaped body, the shaped body is preheated to a temperature of from about 50 to about 400 degrees centigrade, and the preheated m... | 09/08/1992 |
| 5143668 | Process for making a reaction-sintered carbide-based composite body with controlled combustion synthesis There is disclosed a process for preparing a sintered ceramic composite which is comprised of alumina and metal carbide. In the first step of this process, a mixture of silica, aluminum material, and carbon is comminuted until a substantially single-phase... | 09/01/1992 |
| 5139720 | Method of producing sintered ceramic material In a method of manufacturing a sintered ceramic material using the heat generated in a thermit reaction as a heating source, a pre-heating is applied preceding to the sintering step or a mixture comprising: (A) at least one ceramic powder, (B) at least on... | 08/18/1992 |
| 5071797 | Titanium carbide/alumina composite material There is disclosed a titanium carbide/alumina composite material which contains from about 44 to about 54 weight percent of titanium carbide, from about 45 to about 53 weight percent of alumina, and less than 2 weight percent of titanium nitride, titanium... | 12/10/1991 |
| 5061662 | Method for preparing sintered body of the titanium boride and apparatus therefor A method for preparing the sintered body of titanium boride being characterized in that 17-27 mol % of metallic titanium powder, 39-74 mol % of boron powder and 1-30 mol % of aluminium powder are wet combined in an anhydrous solvent and pressed at pressur... | 10/29/1991 |
| 5032332 | Process for making a silicon carbide whisker reinforced alumina ceramic composite precursor A process for preparing a ceramic composite material containing alpha silicon carbide whiskers is disclosed. In the process, a slurry containing non-aqueous liquid and aluminum material, amorphous carbon, and silica is provided. This slurry is thereafter ... | 07/16/1991 |
| 5006290 | Process for making a silicon carbide whisker reinforced alumina ceramic composite precursor A process for preparing a ceramic composite material containing alpha silicon carbide whiskers is disclosed. In the process, a slurry containing non-aqueous liquid and aluminum material, amorphous carbon, and silica is provided. This slurry is thereafter ... | 04/09/1991 |
| 4990295 | Process for making a silicon carbide composition A process for preparing a ceramic composite which is comprised of alpha silicon carbide whiskers and alpha aluminum oxide powder is disclosed. In the first step of this process, there is provided a slurry comprised of from about 80 to about 92 volume perc... | 02/05/1991 |
| 4944930 | Synthesis of fine-grained -silicon nitride by a combustion process A combustion synthesis process for the preparation of -silicon nitride and composites thereof is disclosed. Preparation of the -silicon nitride comprises the steps of dry mixing silicon powder with an alkali metal azide, such as sodium azide... | 07/31/1990 |
| 4902457 | Method for manufacturing a porous material or a composite sintered product comprising zirconium oxide and a carbide A method for manufacturing a porous body comprising zirconium oxide and a metal carbide is described. The method comprises mixing a metallic zirconium powder, a metal oxide, and a carbon powder, shaping the mixture in a desired form, and igniting a part o... | 02/20/1990 |
| 4891341 | Fine-grained ceramics and method for making the same High surface area, submicron ceramic powders are synthesized by reducing an oxide in the presence of another metal (i.e., Mg, Al, Ca, and the like) and a source of carbon, nitrogen or boron to form a new oxide and a carbide, nitride (or carbonitride). or ... | 01/02/1990 |
| 4889745 | Method for reactive preparation of a shaped body of inorganic compound of metal A shaped body of a refractory or other functional inorganic compound of a metal, e.g., borides, carbides, silicides, etc. of titanium, zirconium, niobium and the like in a plate-like form can be prepared by an in situ reactive sintering method in which a ... | 12/26/1989 |
| 4795598 | Method of making articles from sinterable materials A method of binder removal from a green body before sintering or the like wherein the binder is constituted of a polymeric material or mixture which is degradable by thermo-oxidation and the green body is initially heated to a temperature where the binder... | 01/03/1989 |
| 4778649 | Method of producing composite materials A method of producing a material having a layer of ceramic as a first component, a layer of a metal as a second component and an intermediate layer lying between said layers and including said first and second components in continuous gradient ratios so t... | 10/18/1988 |
| 4761262 | Sintering method A method for sintering a metal powder, a ceramic powder, or a mixture thereof accomplishes compact sintering of even a high melting substance by heating the powder at an elevated temperature for a short time under not less than 10,000 atmospheres of press... | 08/02/1988 |
| 4695321 | Dynamic compaction of composite materials containing diamond This invention relates to high-hardness, high-toughness, high-density composite materials containing diamond, and a process for making such materials comprising applying shock compression to the composite powders and inducing an exothermic chemical reacti... | 09/22/1987 |
| 4655830 | High density compacts This invention relates to the manufacture of compacts of ceramic composition, cermets, and other high hardness materials by applying explosive shock during exothermic sintering of such powders.... | 04/07/1987 |
| 4595545 | Refractory metal borides and composites containing them Refractory metal borides, carbides, nitrides and mixtures thereof of the Group IVb, Vb and VIb metals are produced from a glass or microcrystalline gel formed from organo-metallic precursors. Typically TiO2.B.sub.2 O3 glass is produc... | 06/17/1986 |
| 4162284 | Method of producing mechanically strong pellets from non-oxidizable metal oxides A method of producing mechanically strong sintered pellets suitable for consumable use in smelting furnaces from non-oxidizable metal oxides is disclosed. The metal oxide is combined with a carbon-containing material whereafter the formed pellet is sinter... | 07/24/1979 |
| 4059669 | Method of making aluminum phosphate Aluminum phosphate is made in ultrapure form by reaction between phosphoric acid and an aluminum alkoxide. Cast articles may be made by using the liquid reaction intermediate product as a binder in sintering of particles of aluminum phospate.... | 11/22/1977 |
| 3932594 | Process for the preparation of fine grain metal carbide powders Fine grain metal carbide powders are conveniently prepared from the corresponding metal oxide by heating in an atmosphere of methane in hydrogen. Sintered articles having a density approaching the theoretical density of the metal carbide itself can be fab... | 01/13/1976 |
