Carbide Or Oxycarbide Containing Patents (Class 501/87)
  • Patent number: 10364193
    Abstract: A method for synthesizing high-purity ultrafine ZrC—SiC composite powder is provided. The high-purity ultrafine ZrC—SiC composite powder is prepared by utilizing zirconium silicate only or zirconium silicate with one or both of zirconium oxide or silica sol as a zirconium source and a silicon source material, utilizing sucrose or glucose as a carbon source material, and utilizing acrylamide monomer and N,N?-methylene diacrylamide cross-linking agent as a gel material.
    Type: Grant
    Filed: October 23, 2015
    Date of Patent: July 30, 2019
    Assignee: SHANDONG ULTRAMING FINE CERAMICS CO., LTD.
    Inventors: Daming Chen, Danyu Jiang
  • Patent number: 10294112
    Abstract: A compound is provided that has the formula: Ln4-x-zBxDzM2-n-yAnByO9, where Ln comprises La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof; x is 0 to about 2; D is La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, where: D is not equal to Ln; if D is La, Ce, Pr, Nd, Pm, Sm, or a mixture thereof, then z is 0 to less than 4; if D is Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture thereof, then z is 0 to about 2; M comprises Ga, Al, or a combination thereof; A comprises Fe, In, or a combination thereof; n is 0 to about 1; y is 0 to about 1; and x+y is greater than 0. In one embodiment, a composition is generally provided that includes a silicon-containing material and such a boron-doped refractory compound.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: May 21, 2019
    Assignee: General Electric Company
    Inventors: Glen Harold Kirby, Julin Wan
  • Patent number: 10273583
    Abstract: A component for high temperature applications includes a substrate and a layer of an aluminum-containing MAX phase material and another material applied to the substrate.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: April 30, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Christopher W. Strock, Shahram Amini
  • Patent number: 10252946
    Abstract: A composite ceramic composition including a boron carbide phase and a method of forming the same. The composite ceramic composition includes a tungsten boride phase, a transition metal boride phase. The composite ceramic composition may also include a carbon disposed in solid solution with at least the tungsten boride phase and the transition metal boride phase. The transition metal boride phase may include a boride of at least one metal chosen from Cr, Nb, and Zr.
    Type: Grant
    Filed: November 23, 2015
    Date of Patent: April 9, 2019
    Assignee: Corning Incorporated
    Inventors: Bethany Rose Conway, James William Zimmermann
  • Patent number: 10208542
    Abstract: A polycrystalline compact includes diamond, cubic boron nitride, and at least one hard material, which may be aluminum nitride, gallium nitride, silicon nitride, titanium nitride, silicon carbide, titanium carbide, titanium boride, titanium diboride, and/or aluminum boride. The diamond, the cubic boron nitride, and the hard material are intermixed and interbonded to form a polycrystalline material. An earth-boring tool includes a bit body and a polycrystalline diamond compact secured to the bit body. Methods of fabricating polycrystalline compacts include forming a mixture comprising diamond, non-cubic boron nitride, and a metal or semimetal; encapsulating the mixture in a container; and subjecting the encapsulated mixture to high-pressure and high-temperature conditions to form a polycrystalline material.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: February 19, 2019
    Assignee: Baker Hughes Incorporated
    Inventors: Valery N. Khabashesku, Vladimir P. Filonenko
  • Patent number: 10093584
    Abstract: Polymer-derived ceramic composites are described herein. The composites are formed using hexagonal boron nitride nanosheet-functionalized silicon-based ceramic precursor polymers. The composites a matrix of a polymer-derived ceramic and hexagonal boron nitride nanosheets embedded therein. Silicon-derived ceramic precursors such as polysilazane and/or polysiloxane are used to create improved SiCN and/or SiOC ceramic composites.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 9, 2018
    Assignee: Kansas State University Research Foundation
    Inventors: Gurpreet Singh, Lamuel David
  • Patent number: 9896384
    Abstract: A method of forming a sintered ?-phase tantalum carbide can include assembling a particulate mixture including a tantalum hydride powder and a carbon source powder. The particulate mixture can be sintered to form a tantalum carbide having at least 70 wt. % of a ?-phase with at least about 90% densification. After sintering, the tantalum carbide can be cooled to substantially retain the ?-phase.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: February 20, 2018
    Assignee: University of Utah Research Foundation
    Inventors: Dinesh K. Shetty, Raymond A. Cutler, Michael Sygnatowicz
  • Patent number: 9637417
    Abstract: Sialon materials contain HFO2 in a maximum of 1 mass-% as a sintering additive, methods of producing them and methods of using them an ?/?-SiAlON material with 5 mass % to 50 mass %, ?/(?/?) RE-?-SiAlON wherein RE stands for at least one cation selected from the group consisting of Y, Sc, Lu, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Mg or Ca, and 95 mass % to 50 mass %, ?/(?/?) ?-SiAlON and of an Hf-containing amorphous or partially crystalline grain-boundary phase with a proportion with respect to the overall material is below 10 vol %, wherein the Hf content of the sintered material is 0.2 mass % to 1.0 mass %, and of a dispersion phase comprising globular particles with a mean particle size of from 0.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: May 2, 2017
    Assignee: CeramTec GmbH
    Inventors: Bernd Bitterlich, Killian Friederich
  • Patent number: 9428844
    Abstract: The present invention concerns a crucible for solidifying a silicon ingot from molten silicon, characterized in that it is coated at least partially on the inner surface thereof with an outer layer provided in the form of a stack of laminations, each lamination having a thickness varying from 5 to 150 ?m, and being formed from a material obtained by thermal decomposition of polysilazane(s) and/or polysiloxane(s) and wherein inorganic particles are embedded having a size varying from 50 ?m to 200 ?m. The present invention further concerns a method for preparing such crucibles.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: August 30, 2016
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventors: Charles Huguet, Severine Bailly, Virginie Brize
  • Patent number: 9340460
    Abstract: A refractory material withstanding high temperatures in an oxidizing medium contains at least hafnium boride and tantalum boride, hafnium and tantalum being present in the refractory material exclusively in compound form.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 17, 2016
    Assignee: HERAKLES
    Inventors: Emilie Courcot Mendez, Jacques Thebault, Anne Sauveroche
  • Patent number: 9254589
    Abstract: Disclose are a reaction container and a vacuum heat treatment apparatus. A method of preparing a reaction container comprises preparing a graphite mixture by mixing first and second graphite powders having particle sizes different from each other, preparing a graphite molded body by pressing the graphite mixture, and processing the graphite molded body. The density of the graphite molded body is in a range of 1.8 g/cm3 to 2.1 g/cm3. A method of preparing a reaction container comprises preparing a graphite molded body by pressing graphite powders, and processing the graphite molded body to prepare the reaction container. A carbon source is impregnated into the graphite molded body or the reaction container, and density of the reaction container is in a range of 1.8 g/cm3 to 2.1 g/cm3.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 9, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Byung Sook Kim, Jung Eun Han
  • Publication number: 20150105234
    Abstract: Embodiments of the invention are directed to a method of preparing a WNx, WNxCy, WNxOz, and WNxCyOz solid by the deposition of a WNx precursor at a temperature below 300° C. The WNx precursor is a tungsten nitrido complex. The deposition can be carried out using a tungsten nitrido complex as a single-source metal organic precursor. In an embodiment of the invention, the deposition can be performed to form a plurality of WNx, WNxCy, WNxOz, WNxCyOz nanoparticles.
    Type: Application
    Filed: December 18, 2014
    Publication date: April 16, 2015
    Inventors: LISA MCELWEE-WHITE, TIMOTHY JAMES ANDERSON, K. RANDALL MCCLAIN, CHRISTOPHER O'DONOHUE
  • Patent number: 8986845
    Abstract: A ceramic composite article includes ceramic carbide fibers and a ceramic matrix in which the ceramic carbide fibers are embedded. The ceramic matrix includes a laminar structure with at least one layer of a first ceramic material and at least one layer of a second, different ceramic material.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: March 24, 2015
    Assignee: United Technologies Corporation
    Inventors: Michael A. Kmetz, Kirk C. Newton, Douglas M. Berczik, Timothy Coons
  • Patent number: 8962504
    Abstract: The disclosure provides novel graphene-reinforced ceramic composites and methods for making such composite materials.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: February 24, 2015
    Assignee: Arizona Board of Regents on Behalf of The University of Arizona
    Inventors: Erica L. Corral, Luke S. Walker, Victoria R. Marotto, Mohammad A. Rafiee, Nikhil Koratkar
  • Patent number: 8956479
    Abstract: A composite material having utility for removing sulfur from a feedstock comprises a ceramic matrix having a relatively low melting point metal such as tin, zinc, lead or bismuth nanodispersed therein. The material may be prepared from a mixture of particles of a precursor of the ceramic matrix and precursor of the metal. The precursors are selected such that the melting point of the precursor of the ceramic is less than the melting point of the precursor of the metal. The mixture of precursor materials is heated to a temperature sufficient to melt the precursor of the ceramic material so as to coat it onto the precursor of the metal. The ceramic precursor is then reacted so as to convert it to a ceramic. Thereafter, the precursor of the metal is converted to a free metal which is retained within the ceramic matrix so as to prevent agglomeration.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: February 17, 2015
    Assignee: A123 Systems LLC
    Inventors: Hanwei Lei, Maha Hammoud, Adam Rand, Liya Wang
  • Publication number: 20150044454
    Abstract: Provided is a laminate film having a substrate and at least one thin film layer which has been formed on at least one surface of the substrate, in which at least one of the thin film layer contains silicon atoms, oxygen atoms, and carbon atoms.
    Type: Application
    Filed: March 21, 2013
    Publication date: February 12, 2015
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventor: Akira Hasegawa
  • Patent number: 8937029
    Abstract: Disclosed is a boron carbide-based ceramics material which has a high density and a high specific rigidity, but additionally with excellent processability, and a production method for the boron carbide-based ceramics material. Specifically, the high-rigidity ceramics material contains boron carbide in an amount of 90 to 99.5 mass %, wherein at least silicon, aluminum, oxygen and nitrogen coexist in a grain boundary phase between crystal grains of the boron carbide. This high-rigidity ceramics material can be produced by a method comprising: preparing a boron carbide powder, and, as a sintering aid, one or more selected from the group consisting of an oxide, a nitride and an oxynitride of silicon, an oxide, a nitride and an oxynitride of aluminum, and a composite oxide, a composite nitride and a composite oxynitride of aluminum and silicon, in such a manner as to contain all of Si, Al, O and N; and subjecting the boron carbide powder and the sintering aid to mixing, forming and sintering.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: January 20, 2015
    Assignee: Krosakiharima Corporation
    Inventors: Yutaka Sato, Hiroto Unno
  • Publication number: 20140349117
    Abstract: The invention pertains to hardware such as cutting tools with improved performance, wear-resistance and durability made from sintered polycrystalline aluminum nitride based ceramic composites containing secondary or dispersed phases for enhanced toughness. The articles of this invention provide good hardness, toughness, chemical inertness, thermal stability, lubricity, wear-resistance, and the ability to operate in the presence of liquid coolants, yielding good surface finish and long lifetime. The cutting tools of this invention are applicable to a wide range of industrial, biomedical, commercial and other applications.
    Type: Application
    Filed: May 27, 2014
    Publication date: November 27, 2014
    Applicant: Surmet Corporation
    Inventor: Suri A. Sastri
  • Publication number: 20140349832
    Abstract: Ceramic nanocomposites and methods for manufacturing the ceramic nanocomposites are disclosed. One method includes introducing to a fired green ceramic body having a ceramic matrix submicron particles having coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one type of location-controlling dopant at an amount that is sufficient to cover the majority of the ceramic matrix grain boundaries. One ceramic nanocomposite includes a ceramic matrix with submicron particles dispersed in the ceramic matrix, the submicron particles having a coefficient of thermal expansion lower than the coefficient of thermal expansion of the ceramic matrix and at least one dopant that covers the majority of the ceramic matrix grain boundaries, at a concentration that does not exceed the bulk solubility limit of the dopant in the ceramic matrix at the ceramic nanocomposite sintering temperature.
    Type: Application
    Filed: August 11, 2014
    Publication date: November 27, 2014
    Inventors: Wayne David KAPLAN, Gali Gluzer, Moshe Katz, Gil Perlberg
  • Publication number: 20140336034
    Abstract: Mixer for ceramic feedstock pellets with a tank, a mixing means, and heat exchange means including cooling means for the cooling of the content of this tank. Control means control the heat exchange means which include heating means arranged to heat the content of this tank to a temperature comprised between a lower temperature (TINF) and a higher temperature (TSUP) stored in a memory for a specific mixture, and the heating means exchange energy with a heat exchange and mixing temperature maintenance circuit, external to this tank, and wherein the thermal inertia of this circuit is higher than that of this fully loaded tank. The invention also concerns a method for mixing raw material for powder metallurgy, implementing a specific injection moulding composition and a specific binder.
    Type: Application
    Filed: May 2, 2014
    Publication date: November 13, 2014
    Applicant: Comadur S.A.
    Inventor: Damien CARTIER
  • Publication number: 20140329663
    Abstract: A composition having nanoparticles of silicon carbide and a carbonaceous matrix or silicon matrix. The composition is not in the form of a powder. A composition having silicon and an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining silicon and the organic compound and heating to form silicon carbide or silicon nitride nanoparticles.
    Type: Application
    Filed: May 19, 2014
    Publication date: November 6, 2014
    Applicant: The Govenment of the United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Andrew Saab, Matthew Laskoski
  • Publication number: 20140329662
    Abstract: A composition having nanoparticles of a boron carbide and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising boron and an organic component. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining boron and an organic compound having a char yield of at least 60% by weight, and heating to form boron carbide or boron nitride nanoparticles.
    Type: Application
    Filed: July 17, 2014
    Publication date: November 6, 2014
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Andrew Saab, Matthew Laskoski
  • Publication number: 20140315015
    Abstract: A cubic boron nitride sintered body with excellent wear resistance and fracture resistance. The cubic boron nitride sintered body includes 85 to 95% by volume of cubic boron nitride, and 5 to 15% by volume of a binder phase and inevitable impurities. The binder phase has at least three compounds selected from carbides, nitrides, carbonitrides, oxides and mutual solid solutions thereof of Al, V, Cr, Mn, Co, Ni, Nb and Mo. An amount of an aluminum element contained in the cubic boron nitride sintered body is 0.5 to 5% by mass based on a total mass of the cubic boron nitride sintered body. The binder phase is essentially free of both pure metals and alloys consisting of pure metals.
    Type: Application
    Filed: November 7, 2012
    Publication date: October 23, 2014
    Inventor: Yuichiro Fukushima
  • Patent number: 8865301
    Abstract: A composition having nanoparticles of a refractory-metal boride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component, boron, and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles, boron, and an organic compound having a char yield of at least 60% by weight to form a precursor mixture. A composition having nanoparticles of a refractory-metal boride that is not in the form of a powder.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: October 21, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M Keller, Andrew Saab, Matthew Laskoski, Syed B Qadri
  • Publication number: 20140272415
    Abstract: Near-stoichiometric spherical tungsten carbide particles and a method for making near-stoichiometric spherical tungsten carbide particles are disclosed. The method of making these particles may comprise coating a starting powder with a carbon containing compound followed by plasma processing the starting powder in a plasma formed by known ionization techniques using a suitable fluid medium. The near-stoichiometric spherical tungsten carbide particles exhibit desirable particle uniformity, impact resistance, and wear resistance in a variety of applications.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Harold Edward Kelley, Pankaj K. Mehrotra
  • Publication number: 20140274656
    Abstract: A compound having the moiety M-[(C?C)n-M?]m. Each M and each M? is a transition metal. Each n is 1 or 2, and m is 2 or more. A method of reacting a transition metal halide with 1,2-dilithioacetylene or 1,4-dilithiodiacetylene to form a transition metal compound.
    Type: Application
    Filed: March 7, 2014
    Publication date: September 18, 2014
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Manoj K. Kolel-Veetil, Teddy M. Keller
  • Publication number: 20140268484
    Abstract: A dielectric ceramic composition includes: a base material powder BamTiO3 (0.995?m?1.010); 0.2 to 2.0 moles of a first accessory ingredient, an oxide or carbide containing at least one of Ba and Ca, based on 100 moles of the base material powder; a second accessory ingredient, an oxide containing Si or a glass compound containing Si; 0.2 to 1.5 moles of a third accessory ingredient, an oxide containing at least one of Sc, Y, La, Ac, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu, based on 100 moles of the base material powder; and 0.05 to 0.80 mole of a fourth accessory ingredient, an oxide containing at least one of Cr, Mo, W, Mn, Fe, Co, and Ni, based on 100 moles of the base material powder, a content ratio of the first accessory ingredient to the second accessory ingredient being 0.5 to 1.7.
    Type: Application
    Filed: June 21, 2013
    Publication date: September 18, 2014
    Inventors: Sung Hyung KANG, Du Won CHOI, Ki Yong LEE, Jae Hun CHOE, Min Sung SONG
  • Patent number: 8828534
    Abstract: The method comprises: using chemical vapor infiltration to form a first continuous interphase on the fibers of a fiber structure made of refractory fibers, the interphase having a thickness of no more than 100 nanometers; impregnating the fiber structure with a consolidation composition comprising a carbon or ceramic precursor resin; forming a fiber preform that is consolidated by shaping the impregnated fiber structure and using pyrolysis to transform the resin into a discontinuous solid residue of carbon or ceramic; using chemical vapor infiltration to form a second continuous interphase layer; and densifying the preform with a refractory matrix. This preserves the capacity of the fiber structure to deform so as to enable a fiber preform to be obtained that is of complex shape, while nevertheless guaranteeing the presence of a continuous interphase between the fibers and the matrix.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: September 9, 2014
    Assignee: Herakles
    Inventors: Eric Philippe, Eric Bouillon
  • Patent number: 8822023
    Abstract: A composition having nanoparticles of a refractory-metal carbide or refractory-metal nitride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles with an organic compound having a char yield of at least 60% by weight to form a precursor mixture.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: September 2, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M Keller, Andrew Saab, Matthew Laskoski, Manoj K. Kolel-Veetil, Syed B Qadri
  • Patent number: 8822360
    Abstract: An article which includes a structure of a ceramic material that has a composition SiOxMzCy, where Si is silicon, O is oxygen, M is at least one metal and C is carbon and wherein x<2, y>0 and z<1 and x and z are non-zero.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: September 2, 2014
    Assignee: United Technologies Corporation
    Inventors: Wayde R. Schmidt, Paul Sheedy, Tania Bhatia Kashyap, Daniel G. Goberman, Xia Tang
  • Patent number: 8815381
    Abstract: A composition having nanoparticles of a boron carbide and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising boron and an organic component. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining boron and an organic compound having a char yield of at least 60% by weight, and heating to form boron carbide or boron nitride nanoparticles.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 26, 2014
    Assignee: The United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M Keller, Andrew Saab, Matthew Laskoski, Syed B Qadri
  • Publication number: 20140178138
    Abstract: A sintered compact contains cubic sialon, ?-sialon, and at least one of a first component and a second component. The first component is at least one element selected from the group consisting of iron, cobalt, nickel, and group 4 elements, group 5 elements, and group 6 elements of the periodic table. The second component is at least one compound containing at least one element selected from the group consisting of group 4 elements, group 5 elements, and group 6 elements and at least one element selected from the group consisting of carbon, nitrogen, and boron.
    Type: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kenichi WATATANI, Michiko MATSUKAWA, Katsuhito YOSHIDA, Daisuke MURAKAMI
  • Patent number: 8728966
    Abstract: It is an object to provide an aluminum oxycarbide composition capable of suppressing oxidation of Al4O4C during use to maintain advantageous effects of Al4O4C for a long time. In an aluminum oxycarbide composition comprising Al4O4C crystals, the Al4O4C crystals have an average diameter of 20 ?m or more, based on an assumption that a cross-sectional area of each Al4O4C crystal during observation of the aluminum oxycarbide composition in an arbitrary cross-section thereof is converted into a diameter of a circle having the same area as the cross-sectional area. This aluminum oxycarbide composition can be produced by subjecting a carbon-based raw material and an alumina-based raw material to melting in an arc furnace and then cooling within the arc furnace.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: May 20, 2014
    Assignee: Krosakiharima Corporation
    Inventors: Keiichiro Akamine, Joki Yoshitomi
  • Publication number: 20140127527
    Abstract: A hard alloy and a cutting tool. The hard alloy includes a hard phase and a binder phase. The hard phase includes: a main phase containing 50-70 mass % of WC, 15-30 mass % of TiCN, and 0-10 mass % of at least one kind of carbide, nitride or carbonitride of one or more non-W, non-Ti periodic table Group 4, 5 or 6 metal; a WC phase; and a composite hard phase. The binder phase includes 6 to 12 mass % of at least one of Co and Ni. The hard alloy includes a surface portion at a surface thereof, the surface portion having a WC content higher than that of an internal portion thereof. An average size of grains in the WC phase in the surface portion is larger than an average size of grains in the WC phase in the internal portion.
    Type: Application
    Filed: June 27, 2012
    Publication date: May 8, 2014
    Applicant: Kyocera Corporation
    Inventors: Hideyoshi Kinoshita, Katsuhiro Hanaki, Kouji Hirosaki
  • Patent number: 8697259
    Abstract: The invention relates to a boron carbide composite material comprising diamond particles and boron carbide, the composite material having a porosity of less than 2 percent by volume. The invention further relates to a method for manufacturing such materials, the method including coating a plurality of diamond particles with boron carbide, combining the plurality of diamond particles to form a green body and subjecting the green body to a temperature in the range from about 1,200 degrees centigrade to about 2,000 degrees centigrade and pressure or vacuum not exceeding about 2,000 Mpa.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: April 15, 2014
    Inventors: Anine Hester Ras, Frances Van Staden, Ronald A. Abramshe, Kaveshini Naidoo
  • Publication number: 20140100103
    Abstract: Disclosed is a method of producing carbide and carbon nitride powders containing a binder, and cermet obtained from the same. The method includes preparing Ti—Ni alloy powders for Ti alloy powders and graphite, planetary-pulverizing the Ti—Ni alloy powders and the graphite, mortar-pulverizing the alloy powders and the graphite which are subject to the planetary-pulverizing, and performing heat treatment for the Ti—Ni alloy powders and the graphite that are pulverized. Cermet, which is made of the composite powders of carbide and carbon nitride/metal including both TiC which is ceramic material and Ni which is metal is provided.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 10, 2014
    Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
    Inventor: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
  • Patent number: 8685874
    Abstract: A ceramic material having a high toughness can include carbon and a transition metal. The transition metal can have an elemental body centered cubic structure at room temperature. A substantial amount of the ceramic can be of a rhombohedral ? phase of the transition metal and carbon. These materials can have a high thermal shock resistance, high fracture toughness, and good high temperature performance. A particulate mixture of a carbon source and a transition metal source can be assembled (12) and reacted (14) under high pressure and high temperature. The transition metal source can include a transition metal of a metal which has an elemental BCC structure at room temperature. The particulate mixture carbon to transition metal ratio is chosen so as to achieve a zeta phase carbide and processing is affected in order to retain the zeta phase at a substantial weight percent of the material (i.e. greater than about 5 wt %).
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: April 1, 2014
    Assignee: University of Utah Research Foundation
    Inventors: Dinesh K. Shetty, Raymond A. Cutler, Kenneth Hackett, Shane Verhoef
  • Patent number: 8679220
    Abstract: This invention relates to a ceramic and a cermet each having a second phase for improving toughness via phase separation from a complete solid-solution phase and to a method of preparing them. The ceramic and the cermet may have the second phase phase-separated from the complete solid-solution phase, thereby easily achieving a great improvement in toughness and exhibiting other good properties including high strength, consequently enabling the manufacture of high-strength and high-toughness cutting tools, instead of conventional WC—Co hard materials.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: March 25, 2014
    Assignee: SNU R&DB Foundation
    Inventor: Shin Hoo Kang
  • Patent number: 8673794
    Abstract: Solid material powders are described that include a first compound that is a non-oxide ceramic compound and a second compound that is a non-oxide, in relative amounts with respect to each other to form a eutectic mixture. The solid material has two discrete phases arranged in an interpenetrating three-dimensional microstructure. Methods for preparation of the solid materials, and shaped sintered articles from the materials, along with methods and techniques for their manufacture, are also disclosed.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: March 18, 2014
    Assignee: Lockheed Martin Corporation
    Inventors: Gautham Ramachandran, Scott W. Smith, Sanjay Prasad
  • Publication number: 20140072805
    Abstract: A refractory material that can withstand high temperatures in an oxidizing medium and containing at least: a first constituent corresponding to hafnium, or to a non-oxide compound of hafnium, or circular in a or a non-oxide compound of zirconium, or corresponding to a mixture of at least two metals and/or compounds selected from hafnium a non-oxide compound of hafnium, zirconium, and a non-oxide compound of zirconium; a second constituent corresponding to the boron or to a non-oxide compound of boron, or corresponding to a mixture of boron and a non-oxide compound of boron; and a third constituent corresponding to a rare earth RE or to a non-oxide compound of the rare earth RE, or corresponding to a mixture of rare earth RE and a non-oxide compound of the rare earth RE, where RE is selected from scandium, yttrium, and the lanthanides. The material contains neither silicon nor a compound of silicon.
    Type: Application
    Filed: December 5, 2011
    Publication date: March 13, 2014
    Applicants: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, HERAKLES
    Inventors: Anne-Sophie Andreani, Angeline Poulon, Francis Rebillat, Jacques Thebault, Anne Sauveroche
  • Patent number: 8658054
    Abstract: In order to achieve the object of providing a mixture by means of which, in particular, sintered moldings can be obtained that are virtually free of surface stains produced by soot particles, a mixture is proposed which comprises at least one pressing aid and at least one additive, wherein the additive is selected from a group of substances which have releasable carbon dioxide.
    Type: Grant
    Filed: July 12, 2011
    Date of Patent: February 25, 2014
    Assignee: GKN Sinter Metals Holding GmbH
    Inventors: Rene Lindenau, Lars Wimbert
  • Patent number: 8598057
    Abstract: A monolithic, unitary, seamless and physically continuous ceramic armor plate having first regions of one mechanical property and one chemical composition and one microstructural composition isolated from one another by a network of second regions of another mechanical property different from the one mechanical property and another chemical composition different from the one chemical composition and another microstructural composition different from the one microstructural composition, the one mechanical property and the another mechanical property being the propensity to crack.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: December 3, 2013
    Assignee: Verco Materials, LLC
    Inventor: Robert F. Speyer
  • Publication number: 20130309468
    Abstract: A cBN sintered body tool has a cBN sintered body which includes 40 to 85% by volume of cBN, the remainder being a binder phase including at least one selected from at least one metal selected from Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Co, Ni and Al, and at least one of a carbide, a nitride, a carbonitride, a boride and an oxide of these metals and mutual solid solutions thereof, and inevitable impurities. An amount of a Mo element contained in the cBN sintered body is 0.2 to 3.0% by weight based on a whole amount of the cBN sintered body.
    Type: Application
    Filed: February 6, 2012
    Publication date: November 21, 2013
    Applicant: Tungaloy Corporation
    Inventor: Takahide Kudo
  • Publication number: 20130303356
    Abstract: The present invention relates to a method of producing a sintered composite body comprising cubic boron nitride particles dispersed in a cemented carbide matrix by sintering a mixture comprising cubic boron nitride particles and a cemented carbide powder at a sintering temperature below 1350° C. without applying a pressure.
    Type: Application
    Filed: September 23, 2011
    Publication date: November 14, 2013
    Applicant: SANDVIK INTELLECTUAL PROPERTY AB
    Inventors: Jane Smith, Peter Chan, Michael Carpenter
  • Publication number: 20130288879
    Abstract: Disclosed is a boron carbide-based ceramics material which has a high density and a high specific rigidity, but additionally with excellent processability, and a production method for the boron carbide-based ceramics material. Specifically, the high-rigidity ceramics material contains boron carbide in an amount of 90 to 99.5 mass %, wherein at least silicon, aluminum, oxygen and nitrogen coexist in a grain boundary phase between crystal grains of the boron carbide. This high-rigidity ceramics material can be produced by a method comprising: preparing a boron carbide powder, and, as a sintering aid, one or more selected from the group consisting of an oxide, a nitride and an oxynitride of silicon, an oxide, a nitride and an oxynitride of aluminum, and a composite oxide, a composite nitride and a composite oxynitride of aluminum and silicon, in such a manner as to contain all of Si, Al, O and N; and subjecting the boron carbide powder and the sintering aid to mixing, forming and sintering.
    Type: Application
    Filed: November 4, 2011
    Publication date: October 31, 2013
    Applicant: KROSAKIHARIMA CORPORATION
    Inventors: Yutaka Sato, Hiroto Unno
  • Patent number: 8535408
    Abstract: A hardmetal composition comprises tungsten carbide in an amount greater than 50 weight percent of the hardmetal composition. In addition, the hardmetal composition comprises a binder material consisting of at least 90 weight percent nickel, a binder flux between 3.5 to 10.0 weight percent chosen from the group consisting of boron and silicon, and less than 1.0 weight percent other components.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: September 17, 2013
    Assignee: Reedhycalog, L.P.
    Inventors: Jiinjen Albert Sue, Harold Sreshta, Rajagopala Pillai
  • Patent number: 8536080
    Abstract: A metal carbide ceramic fiber having improved mechanical properties and characteristics and improved processes and chemical routes for manufacturing metal carbide ceramic fiber. Metal carbide ceramic fibers may be formed via reaction bonding of a metal-based material (e.g. boron) with the inherent carbon of a carrier medium. One embodiment includes a method of making a metal carbide ceramic fiber using VSSP to produce high yield boron carbide fiber. Embodiments of the improved method allow high volume production of high density boron carbide fiber. The chemical routes may include a direct production of boron carbide fiber from boron carbide powder (B4C) and precursor (e.g. rayon fiber) having a carbon component to form a B4C/rayon fiber that may be processed at high temperature to form boron carbide fiber, and that may be subsequently undergo a hot isostatic pressing to improve fiber purity. Another route may include a carbothermal method comprising combining boron powder (B) with a precursor (e.g.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: September 17, 2013
    Assignee: Advanced Cetametrics, Inc.
    Inventors: Farhad Mohammadi, Richard B. Cass
  • Publication number: 20130237403
    Abstract: A composition having nanoparticles of a boron carbide and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising boron and an organic component. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining boron and an organic compound having a char yield of at least 60% by weight, and heating to form boron carbide or boron nitride nanoparticles.
    Type: Application
    Filed: February 28, 2013
    Publication date: September 12, 2013
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Andrew Saab, Matthew Laskoski, Syed B. Qadri
  • Publication number: 20130202881
    Abstract: New cermets with improved properties and applications are provided. These new cermets have lower density and/or higher hardness than B4C cermet. By incorporating other new ceramics into B4C powders or as a substitute for B4C, lower densities and/or higher hardness cermets result. The ceramic powders have much finer particle size than those previously used which significantly reduces grain size of the cermet microstructure and improves the cermet properties.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 8, 2013
    Applicant: Lawrence Livermore National Security, LLC
    Inventor: Richard Lee Landingham
  • Publication number: 20130196133
    Abstract: A composition having nanoparticles of a refractory-metal boride and a carbonaceous matrix. The composition is not in the form of a powder. A composition comprising a metal component, boron, and an organic component. The metal component is nanoparticles or particles of a refractory metal or a refractory-metal compound capable of decomposing into refractory metal nanoparticles. The organic component is an organic compound having a char yield of at least 60% by weight or a thermoset made from the organic compound. A method of combining particles of a refractory metal or a refractory-metal compound capable of reacting or decomposing into refractory-metal nanoparticles, boron, and an organic compound having a char yield of at least 60% by weight to form a precursor mixture. A composition having nanoparticles of a refractory-metal boride that is not in the form of a powder.
    Type: Application
    Filed: February 15, 2013
    Publication date: August 1, 2013
    Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
    Inventors: Teddy M. Keller, Andrew Saab, Matthew Laskoski, Syed B. Qadri