Metal-containing Coating Patents (Class 427/376.6)
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Patent number: 6713123Abstract: A piezoelectric element includes: a ceramic substrate, an electrode and a piezoelectric portion made of a piezoelectric ceramic composition containing a Pb(Mg, Ni)1/3Nb2/3O3—PbZrO3—PbTiO3 ternary system solid solution composition being represented by the following general formula (1) as a main component: Pbx{(Mg1−yNiy)1/3×aNb2/3}bTicZrdO3 (1), wherein 0.95≦x≦1.05; 0.05≦y≦0.20; 0.90≦a≦1.10; b,c, and d are decimals falling in a range surrounded by (b, c, d)=(0.550, 0.425, 0.025), (0.550, 0.325, 0.125), (0.375, 0.325, 0.300), (0.100, 0.425, 0.475), (0.100, 0.475, 0.425) and (0.375, 0.425, 0.200) in the coordinates with coordinate axes of said b, c and d, and b+c+d=1.000. The electrode is electrically connected to the piezoelectric portion, and the piezoelectric portion is solidly attached to the ceramic substrate directly or via the electrode.Type: GrantFiled: May 2, 2003Date of Patent: March 30, 2004Assignee: NGK Insulators, Ltd.Inventors: Toshikatsu Kashiwaya, Mutsumi Kitagawa
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Patent number: 6676992Abstract: A method for coating an article includes preparing a coating precursor paint including aluminum-containing pigment particles, a temporary organic binder comprising an acrylic, and a solvent for the temporary organic binder. The coating precursor paint is applied to a surface of the article and thereafter heated to a temperature of from about 1200° F. to about 2100° F. in a non-oxidizing environment.Type: GrantFiled: August 22, 2001Date of Patent: January 13, 2004Assignee: General Electric CompanyInventors: Jeffrey Allan Pfaendtner, Michael James Weimer, William Evan McCormack, Joseph David Rigney, Mark Lloyd Miller, John Lewis Lackman
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Patent number: 6651871Abstract: A substrate is coated with a conductive layer, which comprises a conductive layer of bonded ultrafine metal particles formed on the top surface thereof. The ultrafine metal particles have a diameter of 1-20 nm, and the substrate is of a flexible high polymer material. Since the conductive layer is formed by bonded layer of the ultrafine metal particles, an extremely thin layer having high conductivity can be formed. This structure enables the formation of a flexible printed circuit board with high-density interconnects or a transparent conductive film provided with both transparency and conductivity. Conventional vacuum equipments and complicated processes are not necessary for forming the conductive layer on the substrate.Type: GrantFiled: November 18, 2002Date of Patent: November 25, 2003Assignee: Ebara CorporationInventor: Naoaki Ogure
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Patent number: 6645560Abstract: An environmentally resistant coating (34) for improving the oxidation resistance of a niobium-based refractory metal intermetallic composite (Nb-based RMIC) at high temperatures, the environmentally resistant coating (34) comprising silicon, titanium, chromium, and niobium. The invention includes a turbine system (10) having turbine components (11) comprising at least one Nb-based RMIC, the environmentally resistant coating (34) disposed on a surface (33) of the Nb-based RMIC, and a thermal barrier coating (42) disposed on an outer surface (40) of the environmentally resistant coating (34). Methods of making a turbine component (11) having the environmentally resistant coating (34) and coating a Nb-based RMIC substrate (32) with the environmentally resistant coating (34) are also disclosed.Type: GrantFiled: December 10, 2002Date of Patent: November 11, 2003Assignee: General Electric CompanyInventors: Ji-Cheng Zhao, Melvin Robert Jackson, Bernard Patrick Bewlay
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Publication number: 20030198750Abstract: A heat-rejection coating is applied to a metallic component of a gas turbine engine, preferably made of a nickel-base superalloy. A component surface is preferably pre-treated, as by polishing the component surface, thereafter pre-oxidizing the component surface, and thereafter applying a ceramic barrier coating onto the component surface. A reflective-coating mixture is air sprayed onto the pre-treated component surface. The reflective-coating mixture includes a metallic pigment, such as platinum, gold, palladium, and alloys thereof, and a reflective-coating-mixture carrier. The component with the reflective-coating mixture sprayed thereon is fired.Type: ApplicationFiled: April 23, 2002Publication date: October 23, 2003Inventors: Andrew Jay Skoog, Jane Ann Murphy, John Frederick Ackerman, Paul Vincent Arszman, Bryan Thomas Bojanowski, Timothy Ray Lattire
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Patent number: 6635339Abstract: The disclosed invention relates to the field of ceramics and concerns an open-cell expanded ceramic which may be used in the form of a deep-bed filter, and a process for the production thereof. The primary object is to produce an open-cell expanded ceramic by a simple and economical process. This object is attained by an open-cell expanded ceramic in which the inner cavities, cracks and the porosity of the ceramic members are filled partially or completely by one or a plurality of metal and/or ceramic phases and/or glass phases. The open-cell expanded ceramic is also produced in that during or after sintering the cavities, cracks and the porosity of the ceramic members are partially or completely filled with a melt or a suspension which melt below the melting temperature of the expanded ceramic, have a coefficient of expansion similar to the coefficient of expansion of the expanded ceramic, and a very good wetting capacity, and only react partially or not at all with constituents of the expanded ceramic.Type: GrantFiled: May 24, 1999Date of Patent: October 21, 2003Assignee: Frauhofer-Gesellschaft zur Forderung der Angewandten Forschung E VInventors: Joerg Adler, Michael Teichgraeber, Gisela Standke, Helmut Jaunich, Heike Stoever, Reinhard Stoetzel
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Publication number: 20030180451Abstract: A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a low viscosity enabling deposition using direct-write tools. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes copper metal for the formation of highly conductive copper features.Type: ApplicationFiled: October 4, 2002Publication date: September 25, 2003Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
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Patent number: 6605316Abstract: Provided are low-cost, mechanically strong, highly electronically conductive porous substrates and associated structures for solid-state electrochemical devices, techniques for forming these structures, and devices incorporating the structures. The invention provides solid state electrochemical device substrates of novel composition and techniques for forming thin electrode/membrane/electrolyte coatings on the novel or more conventional substrates. In particular, in one embodiment the invention provides techniques for co-firing of device substrate (often an electrode) with an electrolyte or membrane layer to form densified electrolyte/membrane films 5 to 20 microns thick. In another embodiment, densified electrolyte/membrane films 5 to 20 microns thick may be formed on a pre-sintered substrate by a constrained sintering process. In some cases, the substrate may be a porous metal, alloy, or non-nickel cermet incorporating one or more of the transition metals Cr, Fe, Cu and Ag, or alloys thereof.Type: GrantFiled: July 27, 2000Date of Patent: August 12, 2003Assignee: The Regents of the University of CaliforniaInventors: Steven J. Visco, Craig P. Jacobson, Lutgard C. DeJonghe
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Patent number: 6599564Abstract: Distributed Bragg reflectors may be formed in fewer layers by the method, which is capable of producing greater differences in indexes of refraction. Group III-V alternating layers are deposited. The microstructure of alternating layers is controlled to be different. A combination of alternating polycrystalline layers or amorphous and polycrystalline layers results. Alternate ones of the layers oxidize more quickly than the others. A lateral wet oxidation of the alternate ones of the layers produces a structure with large differences in indexes of refraction between adjacent layers. The microstructure between alternating layers may be controlled by controlling Group V overpressure alone or in combination with growth temperature.Type: GrantFiled: August 9, 2000Date of Patent: July 29, 2003Assignee: The Board of Trustees of the University of IllinoisInventors: Kuang-Chien Hsieh, Keh-Yung Cheng
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Publication number: 20030124342Abstract: An environmentally resistant coating (34) for improving the oxidation resistance of a niobium-based refractory metal intermetallic composite (Nb-based RMIC) at high temperatures, the environmentally resistant coating (34) comprising silicon, titanium, chromium, and niobium. The invention includes a turbine system (10) having turbine components (11) comprising at least one Nb-based RMIC, the environmentally resistant coating (34) disposed on a surface (33) of the Nb-based RMIC, and a thermal barrier coating (42) disposed on an outer surface (40) of the environmentally resistant coating (34). Methods of making a turbine component (11) having the environmentally resistant coating (34) and coating a Nb-based RMIC substrate (32) with the environmentally resistant coating (34) are also disclosed.Type: ApplicationFiled: December 10, 2002Publication date: July 3, 2003Inventors: Ji-Cheng Zhao, Melvin Robert Jackson, Bernard Patrick Bewlay
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Publication number: 20030124259Abstract: A precursor composition for the deposition and formation of an electrical feature such as a conductive feature. The precursor composition advantageously has a viscosity of at least about 1000 centipoise and can be deposited by screen printing. The precursor composition also has a low conversion temperature, enabling the deposition and conversion to an electrical feature on low temperature substrates. A particularly preferred precursor composition includes silver and/or copper metal for the formation of highly conductive features.Type: ApplicationFiled: October 4, 2002Publication date: July 3, 2003Inventors: Toivo T. Kodas, Mark J. Hampden-Smith, Karel Vanheusden, Hugh Denham, Aaron D. Stump, Allen B. Schult, Paolina Atanassova, Klaus Kunze
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Patent number: 6585878Abstract: A thermal barrier coating for nickel based superalloy articles such as turbine engine vanes and blades that are exposed to high temperature gas is disclosed. The coating includes a columnar grained ceramic layer applied to a platinum modified Ni3Al gamma prime phase bond coat having a high purity alumina scale. The preferred composition of the bond coat is 5 to 16% by weight of aluminum, 5 to 25% by weight of platinum with the balance, at least 50% by weight, nickel. A method for making the bond coat is also disclosed.Type: GrantFiled: August 7, 2002Date of Patent: July 1, 2003Assignee: Honeywell International, Inc.Inventors: Thomas E. Strangman, Derek Raybould
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Patent number: 6586052Abstract: A method for coating a nickel- or cobalt-based superalloy surface by slurry deposition/heat diffusion. The method includes preparing a slurry of a metal coating powder mixed into an adhesive carrier that will burn off ash-free during a diffusion cycle, depositing the slurry onto the surface of a Ni- or Co-based superalloy material to form a coated surface, and heating the coated surface to a temperature of at least about 1600° F. to diffuse the metal coating powder into the metal substrate.Type: GrantFiled: September 21, 2001Date of Patent: July 1, 2003Assignee: Rolls-Royce CorporationInventors: George Edward Creech, Kevin E. Garing
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Patent number: 6541075Abstract: An article includes a substrate and an adhesion layer overlying the substrate. The adhesion layer includes a first phase including particles, and a second phase including braze alloy that bonds the particles to the substrate. The article further includes a ceramic layer overlying the adhesion layer. In one embodiment, the ceramic layer is a thermal barrier coating (TBC), formed of stabilized zirconia (ZrO2).Type: GrantFiled: February 12, 2001Date of Patent: April 1, 2003Assignee: General Electric CompanyInventors: Wayne Charles Hasz, Jeffrey Allen Conner
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Patent number: 6528123Abstract: This invention relates to a method for preparing the surface of a ceramic component that enables direct brazing using a non-active braze alloy. The present invention also relates to a method for directly brazing a ceramic component to a ceramic or metal member using this method of surface preparation, and to articles produced by using this brazing method. The ceramic can be high purity alumina. The method comprises applying a first coating of a silicon-bearing oxide material (e.g. silicon dioxide or mullite (3Al2O3.2SiO2) to the ceramic. Next, a thin coating of active metal (e.g. Ti or V) is applied. Finally, a thicker coating of a non-active metal (e.g. Au or Cu) is applied. The coatings can be applied by physical vapor deposition (PVD). Alternatively, the active and non-active metals can be co-deposited (e.g. by sputtering a target made of mullite).Type: GrantFiled: June 28, 2000Date of Patent: March 4, 2003Assignee: Sandia CorporationInventors: Charles H. Cadden, F. Michael Hosking
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Patent number: 6528112Abstract: The present invention relates to a transparent conductive layered structure having a transparent substrate and a transparent conductive layer and transparent coating layer formed in succession on this substrate, used in, for instance, the front panel of CRT, etc., display devices. The main components of said transparent conductive layer are noble metal microparticles with a mean particle diameter of 1 to 100 nm, wherein the microparticles are made from gold and/or platinum and silver and the gold and/or platinum content is within a range exceeding 50 wt % up to 95 wt %, and a binder matrix.Type: GrantFiled: April 30, 2002Date of Patent: March 4, 2003Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Kenji Kato, Masaya Yukinobu
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Patent number: 6514389Abstract: A workpiece is processed which includes a multiplicity of recesses formed in the exposed surface. The invention includes depositing a first barrier layer 13 of for example, titanium nitride, a second layer 11 of aluminium alloy and a third relatively thin layer 12 of titanium nitride and then exposing the sandwich of layers to elevated heat and pressure so that the second layer is deformed to fill the recesses 10.Type: GrantFiled: October 8, 1996Date of Patent: February 4, 2003Assignee: Trikon Technologies LimitedInventors: Paul Rich, David John Thomas
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Publication number: 20030017270Abstract: A thermal barrier coating for nickel based superalloy articles such as turbine engine vanes and blades that are exposed to high temperature gas is disclosed. The coating includes a columnar grained ceramic layer applied to a platinum modified Ni3Al gamma prime phase bond coat having a high purity alumina scale. The preferred composition of the bond coat is 5 to 16% by weight of aluminum, 5 to 25% by weight of platinum with the balance, at least 50% by weight, nickel. A method for making the bond coat is also disclosed.Type: ApplicationFiled: August 7, 2002Publication date: January 23, 2003Inventors: Thomas E. Strangman, Derek Raybould
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Patent number: 6503572Abstract: Improved silicon carbide composites made by an infiltration process feature a metal phase in addition to any residual silicon phase. Not only are properties such as mechanical toughness improved, but the infiltrant can be so engineered as to have much diminished amounts of expansion upon solidification, thereby enhancing net-shape-making capabilities. Further, multi-component infiltrant materials may have a lower liquidus temperature than pure silicon, thereby providing the practitioner greater control over the infiltration process. In particular, the infiltration may be conducted at the lower temperatures, where low-cost but effective bedding or barrier materials can terminate the infiltration process once the infiltrant has migrated through the permeable mass up to the boundary between the mass and the bedding material.Type: GrantFiled: July 21, 2000Date of Patent: January 7, 2003Assignee: M Cubed Technologies, Inc.Inventors: W. Michael Waggoner, Barry R. Rossing, Michael A. Richmond, Michael K. Aghajanian, Allyn L. McCormick
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Patent number: 6497920Abstract: An internal passage of an article such as a gas turbine airfoil is coated with an aluminum-containing coating. To accomplish this coating process, a coating slurry of a mixture of a carrier component of water and a hectorite clay or a bentonite clay, together with a solids component of a source of aluminum, a halide activator, and an oxide dispersant, is prepared. The coating slurry is applied to the internal passage of the gas turbine airfoil and dried. The gas turbine airfoil and the applied coating slurry are heated to form an aluminum-containing coating bonded to the internal passage of the gas turbine airfoil. Excess coating material is removed from the article internal passage.Type: GrantFiled: September 6, 2000Date of Patent: December 24, 2002Assignee: General Electric CompanyInventors: Jeffrey Allan Pfaendtner, Joseph David Rigney, Nripendra Nath Das, Michael James Weimer, John Lewis Lackman
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Patent number: 6488986Abstract: A method for imparting an aluminide coating to an alloy gas turbine engine component, heat treating the component, and quenching the component. The component is exposed to a source of aluminum at an elevated temperature in a coating furnace to deposit an aluminum-based oxidation barrier on the component, heated in the coating furnace to a temperature of at least the solution temperature of the alloy, and quenched by flowing a chilled inert gas around the component in the coating furnace to cool the component from the temperature of at least the solution temperature of the alloy to a temperature at which a gamma′ phase of the alloy is set in the alloy in less than about 10 minutes.Type: GrantFiled: January 29, 2001Date of Patent: December 3, 2002Assignee: General Electric CompanyInventors: Nripendra N. Das, Terri K. Brown, Matthew D. Saylor, Brian H. Pilsner, Carl H. Snyder
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Patent number: 6488981Abstract: A method of manufacturing a touch screen panel, the method including applying a resistive coating to one surface of an insulative substrate, applying an insulative protective coating to the resistive coating, depositing a conductive edge electrode pattern including a plurality of edge electrodes on the protective coating, and firing the panel until the edge electrodes etch through the protective coating and make electrical contact with the resistive coating.Type: GrantFiled: June 20, 2001Date of Patent: December 3, 2002Assignee: 3M Innovative Properties CompanyInventors: Paul J. Richter, Michael J. Kardauskas, Frank J. Bottari
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Patent number: 6482469Abstract: A thermal barrier coating (TBC) system and method for improving the thermal fatigue life of a thermal barrier coating. The invention entails modifying the surface morphology of an aluminide bond coat that adheres the thermal barrier coating to a substrate of a superalloy component. The aluminide bond coat has columnar grains, such that grain boundaries are exposed at the surface of the bond coat and define ridges. The surface of the bond coat is then treated so that a sufficient amount of material is removed from the grain boundary ridges and other surface peaks to flatten the bond coat surface, i.e., the ridges and peaks are replaced with flattened surfaces that are nearly parallel to the diffusion zone of the bond coat. By removing these surface irregularities, it is believed that a more stable bond coat surface is created where the critical alumina-bond coat interface will exist following a thermal treatment, such as TBC deposition.Type: GrantFiled: April 11, 2000Date of Patent: November 19, 2002Assignee: General Electric CompanyInventors: Irene T. Spitsberg, Ramgopal Darolia
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Publication number: 20020168478Abstract: The present invention relates to a transparent conductive layered structure having a transparent substrate and a transparent conductive layer and transparent coating layer formed in succession on this substrate, used in, for instance, the front panel of CRT, etc., display devices. The main components of said transparent conductive layer are noble metal microparticles with a mean particle diameter of 1 to 100 nm, wherein the microparticles are made from gold and/or platinum and silver and the gold and/or platinum content is within a range exceeding 50 wt % up to 95 wt %, and a binder matrix.Type: ApplicationFiled: April 30, 2002Publication date: November 14, 2002Applicant: SUMITOMO METAL MINING CO., LTD.Inventors: Kenji Kato, Masaya Yukinobu
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Patent number: 6475558Abstract: An over the highway heavy duty vehicle in the form of a selected one of a truck and a tractor is disclosed. The vehicle has a frame rail having a through aperture. A conductive solder ring is bonded to the rail and surrounds the aperture. A fastener extends through the aperture to secure an electrical connector in electrically conductive engagement with the ring. A ground cable is connected to the connector. A process for forming the ring is also disclosed.Type: GrantFiled: February 26, 2001Date of Patent: November 5, 2002Assignee: Volvo Trucks North America, Inc.Inventor: Frank T. Baginski
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Patent number: 6457234Abstract: A self-aligned (i.e., spatially selective) process for fabricating a corrosion-resistant conductive pad on a substrate, and an associated structure that includes an interconnect to allow a terminal connection to the conductive pad (e.g., a chip-to-package connection). The conductive pad may include a metal such as copper, aluminum, or tungsten. The self-aligned process generates a metallic layer on an initially exposed metal layer, wherein the metallic layer is electrically conductive and corrosion resistant. The process may be accomplished by providing a substrate having a metal layer with an exposed surface, depositing a second metal layer on the exposed surface, annealing the substrate to alloy a portion of the metal layer that includes the exposed surface and a portion of the second metal layer, and removing the unalloyed portion of the second metal layer.Type: GrantFiled: May 14, 1999Date of Patent: October 1, 2002Assignee: International Business Machines CorporationInventors: Daniel C. Edelstein, Judith M. Rubino, Carlos J. Sambucetti, Anthony K. Stamper
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Patent number: 6447924Abstract: A gamma titanium aluminide turbine blade (10) has a titanium oxide layer (20) on its outer surface. A protective coating (22) is applied to the aerofoil (12) and the platform (14) of the turbine blade (10) onto the titanium oxide layer (20). The protective coating (22) comprises a silicate glass having a chromium oxide filler. The protective coating (22) preferably comprise a boron titanate silicate glass having a chromium oxide filler. The oxide layer (20) adheres the protective coating (22) to the titanium aluminide turbine blade (10). The protective coating (22) provides oxidation and sulphidation resistance.Type: GrantFiled: September 24, 1999Date of Patent: September 10, 2002Assignee: Rolls-Royce plcInventor: David F Bettridge
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Patent number: 6447910Abstract: Disclosed is a powder consisting of composite barium titanate particles having surface deposition of a water-insoluble rare earth compound such as yttrium oxide. The powder is used advantageously as a base material for the preparation of a sintered body such as ceramic capacitors of small thickness or compact size as compared with conventional powder blends of barium titanate particles and yttrium oxide particles in respect of greatly improved uniformity in the distribution of the yttrium element. The composite barium titanate particles with surface deposition of yttrium oxide can be prepared by conducting hydrolysis of urea in an aqueous medium containing a water-soluble yttrium salt dissolved therein in the presence of barium titanate particles to deposit basic yttrium carbonate on the particle surface followed by calcination of the particles to convert the basic yttrium carbonate into yttrium oxide.Type: GrantFiled: January 28, 2000Date of Patent: September 10, 2002Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Kazuhiro Wataya
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Patent number: 6436479Abstract: Disclosed is a method of forming a nickel metal thin film, comprising the steps of coating a substrate with a solution for forming a nickel metal thin film, the solution being formed of an alcohol solution containing nickel ions and a reducible chelate type ligand having a hydrazone unit so as to form a gel film, and subjecting the resultant gel film to a heat treatment under an inert gas atmosphere.Type: GrantFiled: December 13, 2000Date of Patent: August 20, 2002Assignee: President of Gifu UniversityInventors: Yasutaka Takahashi, Yutaka Ohya, Takayuki Ban
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Patent number: 6432570Abstract: The invention relates to a fuel electrode for high-temperature solid electrolyte fuel cells and a process for manufacture of the electrode. The fuel electrode of the invention is a porous element composed of a high-melting metal, such as ruthenium, osmium, rhodium or iridium, or an alloy containing the metal. The process for manufacture of the fuel electrode comprises coating an electrode material with a solution or dispersion of the high-melting metal and/or its chloride, sintering the same and finally reducing the product.Type: GrantFiled: April 25, 2000Date of Patent: August 13, 2002Assignee: Osaka Gas Company LimitedInventors: Masamichi Ippommatsu, Minoru Suzuki, Hirokazu Sasaki, Shoji Otoshi, Hisao Ohnishi
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Patent number: 6413589Abstract: A method of coating a ceramic and bonding ceramic onto a substrate for practical uses over 630° C. includes forming a brazed bonding layer at a contact area between the ceramic and the substrate by a fluidic reaction and causing the bonding layer to wet both the ceramic and substrate with a wetting angle of 0-5° to thereby coat and bond the ceramic onto bond the substrate over the entire contact area with a continuous, essentially 100% dense bonding layer. The bonding layer is so free of bonding defects that the resulting bonded product can withstand repeated thermal shocks by quenching in 0° ice water from a temperature in the range of 630-980° C.Type: GrantFiled: June 8, 1995Date of Patent: July 2, 2002Inventor: Chou H. Li
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Publication number: 20020051848Abstract: A method of coating a ceramic onto a substrate, comprising:Type: ApplicationFiled: June 8, 1995Publication date: May 2, 2002Inventor: CHOU H. LI
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Patent number: 6368394Abstract: A heat curable bonding composition for providing a coating to a solid substrate comprises water, phosphate ions, borate ions, and aluminum ions. The bonding composition has a pH in the range from about 1.4 to about 2.2, and is substantially free of chromate ions, molybdate ions, and magnesium ions.Type: GrantFiled: October 18, 1999Date of Patent: April 9, 2002Assignee: Sermatech International, Inc.Inventors: John E. Hughes, Mark F. Mosser, Kevin B. Eddinger, Ronald E. Myers
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Publication number: 20020018845Abstract: A method for manufacturing an electron-emitting device processing an electroconductive film upon which an electron-emission region is formed is characterized in that the formation process of formation of the electron-emission region includes a process of application of metal compound-containing material and film thickness controlling agent to the substrate.Type: ApplicationFiled: August 24, 2001Publication date: February 14, 2002Inventors: Yasuo Takahashi, Naoko Miura
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Patent number: 6342301Abstract: The present invention aims at providing a material for a diamond sintered compact tool, which has a high strength and is available as a material for a cutting tool. Accordingly, the present invention is concerned with a diamond sintered compact comprising a WC-Co type cemented carbide substrate having slight undulation and a diamond sintered compact bonded to one surface of the substrate by sintering during a step of sintering at an ultra-high pressure and high temperature, which has a plate thickness is 0.5 mm to 5 mm and an outer diameter is at least 20 mm and whose diamond sintered compact layer has at least 50% of a thickness area within a range of 0.05 mm to 0.4 mm and contains Co diffusing from the cemented carbide substrate.Type: GrantFiled: July 28, 1999Date of Patent: January 29, 2002Assignee: Sumitomo Electric Industries, Ltd.Inventors: Katsuhito Yoshida, Michinari Asano, Junichi Shiraishi, Tetsuo Nakai
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Patent number: 6284316Abstract: A titanium layer is formed on a substrate with chemical vapor deposition (CVD). First, a seed layer is formed on the substrate by combining a first precursor with a reducing agent by CVD. Then, the titanium layer is formed on the substrate by combining a second precursor with the seed layer by CVD. The titanium layer is used to form contacts to active areas of substrate and for the formation of interlevel vias.Type: GrantFiled: January 20, 2000Date of Patent: September 4, 2001Assignee: Micron Technology, Inc.Inventors: Gurtej Singh Sandhu, Donald L. Westmoreland
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Publication number: 20010004477Abstract: A solution containing a metal component comprises composite ultrafine metal particles each having a core substantially made of a metal component and a covering layer made of an organic compound chemically bonded to the core. The core has an average diameter ranging from 1 to 10 nm. The composite ultrafine metal particles are uniformly dispersed in a solvent.Type: ApplicationFiled: December 11, 2000Publication date: June 21, 2001Inventors: Akira Fukunaga, Hiroshi Nagasawa, Takao Kato
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Publication number: 20010003631Abstract: The method serves for the sealing of porous layers (10) at body surfaces (11), in particular of thermal spray layers of a ceramic coating material. Communicating capillary spaces (12) in the layer (10) have openings at the surface (11). A liquid (2) is used as a sealing medium which consists of a solvent and at least one oxidizable metal which is contained therein.Type: ApplicationFiled: December 6, 2000Publication date: June 14, 2001Applicant: Sulzer Innotec AGInventors: Raoul Patrick Villiger, Emad Batawi
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Patent number: 6242050Abstract: A method of providing a roughened bond coat, for example in a thermal barrier coating system, comprises providing an oxidation-resistant plasma-sprayed layer onto a substrate and disposing a slurry overlayer on the oxidation-resistant plasma-sprayed layer. These steps form a roughened bond coat possessing an uneven, undulated, and irregular surface. A roughened bond coat in a thermal barrier coating system reduces de-bonding of the bond coat and a thermal barrier coating layer, which is desirable to maintain the insulation features of the thermal barrier coating system.Type: GrantFiled: November 24, 1998Date of Patent: June 5, 2001Assignee: General Electric CompanyInventors: Ann Melinda Ritter, Melvin Robert Jackson, Curtis Alan Johnson
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Patent number: 6232004Abstract: The present invention provides methods for treating ceramic materials, including oxide ceramic materials such as zirconia, with a treatment agent comprising a metallic material, such as titanium, by contacting a surface of the ceramic material with the treatment agent and heating the assembly to a temperature at which the ceramic material incorporates a portion of the metallic material by diffusion. The treated ceramic material is uniformly darkened and exhibits improved structural and physical properties.Type: GrantFiled: January 22, 1999Date of Patent: May 15, 2001Assignee: Pacific Coast Technologies, Inc.Inventor: Brian J. Lasater
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Patent number: 6224657Abstract: A heat curable bonding composition of the present invention comprises an aqueous solution containing phosphate ion (PO4−3) and chromium(III) ion (Cr+3, or trivalent chromium) and is substantially free of hexavalent chromium ions. The bonding composition may further contain at least one secondary cationic species. The bonding composition has a pH in the range of about 1 to about 3.5.Type: GrantFiled: October 13, 1998Date of Patent: May 1, 2001Assignee: Sermatech International, Inc.Inventors: Ronald E. Myers, Mark F. Mosser, Kevin B. Eddinger, John E. Hughes
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Patent number: 6210791Abstract: A coated article suitable for use at elevated temperature is formed of a substrate made from metal or a ceramic, a diffuse reflective barrier coating overlying the substrate, and a low-emissivity top coat covering the diffuse reflective barrier coating. The diffuse reflective barrier coating includes a transmissive medium having a transmissive-medium index of refraction, and a plurality of radiation-scattering centers distributed in the transmissive medium, the radiation-scattering centers having a scattering-center index of refraction different from the transmissive-medium index of refraction. The radiation scattering centers may be voids or second ceramic particles. The diffuse reflective barrier coating has a surface roughness of less than about 150 microinches RMS.Type: GrantFiled: June 16, 1999Date of Patent: April 3, 2001Assignee: General Electric CompanyInventors: Andrew J. Skoog, Jane A. Murphy, William R. Stowell
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Patent number: 6197437Abstract: A composite barrel for use in extrusion or injection molding is disclosed. The composite barrel includes an outer housing having a cylindrical bore that extends throughout the length of the outer housing. A wear-resistant lining is disposed on an interior surface that defines the cylindrical bore. The lining is fabricated from an alloy that includes a base metal and phosphorus and the lining may contain hard abrasion-resistant particulate, such as tungsten carbide. The base metal is nickel or cobalt or a mixture of nickel and cobalt. The alloy is typically applied by centrifugal casting and can be cast in a nitrogen-rich atmosphere without creating undesirable lining porosity. Such linings can be made for a fraction of the cost of comparable linings that must be cast under vacuum or in an atmosphere of argon.Type: GrantFiled: February 22, 1999Date of Patent: March 6, 2001Assignee: Wall Colmonoy CorporationInventors: David Martin Bielec, Samuel Conrad DuBois, Subramaniam Rangaswamy
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Patent number: 6194069Abstract: A process for the production of insulator-coated black particles, which comprises the steps of (1-a) dispersing particles of silica or a metal oxide in an alcohol-based solvent consisting mainly of an intermediate alcohol to obtain a dispersion of the above particles, (1-c) forming a titanium oxide coating of TiO2 on the surface of each of the particles whose surfaces have been activated in the above step, to obtain titanium oxide-coated particles, (1-d) calcining the titanium oxide-coated particles obtained in the above step in a reducing and/or nitriding atmosphere and thereby blackening the above titanium oxide coatings to obtain black particles, and (1-e) forming an electrical insulator coating on a surface of each of the black particles obtained in the above step, to obtain insulator-coated black particles; characerized in that the process includes a step of (1-b) adding an alkaline aqueous solution to the dispersion obtained instep (1-a) to activate a surface of each of the particles of a metal oxiType: GrantFiled: July 29, 1999Date of Patent: February 27, 2001Assignee: Ube Nitto Kasei Co., Ltd.Inventors: Tatsuhiko Adachi, Kazuhiko Sakai, Norihiro Nakayama, Kenichi Fujino, Hidekazu Takagi