Metal-containing Coating (e.g., Cermet, Etc.) Patents (Class 427/376.3)
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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: 6497985Abstract: The present invention relates to a method for marking metallic alloys using laser alloying. Specifically, the present invention is directed toward the use of laser alloying steel or aluminum alloys with a mark that provides protection against wear and corrosion and greater permanency.Type: GrantFiled: June 9, 1999Date of Patent: December 24, 2002Assignee: University of Tennessee Research CorporationInventors: Mary Helen McCay, T. Dwayne McCay, John A. Hopkins, Narendra B. Dahotre, C. Michael Sharp, John Brice Bible, Frederick A. Schwartz
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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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Publication number: 20020146514Abstract: Disclosed is a coating composition for DACROTIZED™ film comprising Cr-containing inorganic acid, Ni carbonate, reductant, surfactant and water which has excellent corrosion resistance, weather resistance and chemical resistance thus being widely applicable to anticorrosion treatments of metals such as various alloys, sintering metals, and the like.Type: ApplicationFiled: February 6, 2002Publication date: October 10, 2002Inventors: Bum-Goo Chung, Kwang-Wha Hong
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Patent number: 6444271Abstract: An article used for thermal protection includes a base structure having at least one surface. The base structure is made of a ceramic oxide material. A silicide coating is formed on the at least one surface of the base structure. The coating comprises a refractory metal and silicon, which together form a silicide. The coating is at least partially diffused into the base structure at the at least one surface.Type: GrantFiled: July 20, 1999Date of Patent: September 3, 2002Assignee: Lockheed Martin CorporationInventors: Jerome P. Wittenauer, Sarah D. Reeves, Kenneth W. Benner, Robert D. Yasukawa
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Publication number: 20020041928Abstract: The method is disclosed for coating or impregnating a substrate with a metal oxide. The method includes the steps of applying a liquid metal carboxylate composition, or a solution thereof, to a substrate material, and exposing the substrate material to an environment that will cause vaporization or dissipation of any excess carboxylic acids in the liquid metal carboxylate composition and conversion of the metal carboxylates to metal oxides.Type: ApplicationFiled: March 26, 1997Publication date: April 11, 2002Inventor: LEONID V. BUDARAGIN
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Patent number: 6368668Abstract: Disclosed is a method and an apparatus are provided which can efficiently produce a functional material having a satisfactory level of photocatalytic activity. A photocatalyst coating composition comprising a photocatalytic metal oxide and/or a precursor of the photocatalytic metal oxide is coated on the surface of a substrate. The surface of the coated substrate is rapidly heated to fix the photocatalytic metal oxide onto the surface of the substrate. This rapid heating can realize the production of a functional material having a satisfactory level of photocatalytic activity in an efficient manner. The apparatus, which can continuously carry out the rapid heating immediately after the production of the substrate, can produce the functional material having photocatalytic activity in an efficient manner.Type: GrantFiled: March 3, 2000Date of Patent: April 9, 2002Assignee: Toto Ltd.Inventors: Hideki Kobayashi, Yoshimitsu Saeki, Shinji Tanaka, Yasushi Nakashima, Yoshitaka Mayumi
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Patent number: 6358567Abstract: A dense or porous coating of material is deposited onto a substrate by forcing a colloidal suspension through an ultrasonic nebulizer and spraying a fine mist of particles in a carrier medium onto a sufficiently heated substrate. The spraying rate is essentially matched to the evaporation rate of the carrier liquid from the substrate to produce a coating that is uniformly distributed over the surface of the substrate. Following deposition to a sufficient coating thickness, a single sintering step may be used to produce a dense ceramic coating. Using this method, coatings ranging in thickness from about one to several hundred microns can be obtained. By using a plurality of compounds in the colloidal suspension, coatings of mixed composition can be obtained. By using a plurality of solutions and separate pumps and a single or multiple ultrasonic nebulizer(s), and varying the individual pumping rates and/or the concentrations of the solutions, a coating of mixed and discontinuously graded (e.g.Type: GrantFiled: April 16, 1999Date of Patent: March 19, 2002Assignee: The Regents of the University of CaliforniaInventors: Ai-Quoc Pham, Robert S. Glass, Tae H. Lee
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Publication number: 20010048971Abstract: The present invention provides a method for manufacturing zeolite which is useful as catalyst carrier for exhaust gas clean up by decomposition, reduction or oxidation catalyst carrier for synthesis and/or decomposition of organic or inorganic chemicals, and membrane for selective separation of organic substances, gases and inorganic cations. This new method is one in which a crystalline silica or amorphous glass contained in a fired ceramic substrate is used as a silica source for forming a natural or synthetic zeolite film on the ceramic substrate, while at the same time making the ceramic substrate porous.Type: ApplicationFiled: September 17, 1997Publication date: December 6, 2001Inventors: SRIDHAR KOMARNENI, HIROAKI KATSUKI, SACHIKO FURUTA
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Patent number: 6312762Abstract: A process for the production of copper or a copper base alloy that provides a surface having improved characteristics suitable for the production of a connector or a charging-socket of an electric automobile by having a decreased coefficient of friction on the surface and improved resistance to abrasion. The process comprises coating copper or a copper alloy with Sn, followed by heat treating the resulting Sn-plated copper or copper base in an atmosphere having an oxygen content of no more than 5%, thereby forming on an outermost surface thereof an oxide film and beneath the surface a layer of an intermetallic compound mainly comprising Cu—Sn.Type: GrantFiled: February 2, 2000Date of Patent: November 6, 2001Assignees: Dowa Mining Co., Ltd., Yazaki CorporationInventors: Akira Sugawara, Yoshitake Hana, Takayoshi Endo
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Patent number: 6284320Abstract: In a method for manufacturing a member for use in a molten metal bath, a sealing solution is applied on a coating formed of oxide system ceramics formed on an outermost surface of a substrate. The sealing solution includes an inorganic colloid compound solution containing an inorganic colloid having a grain diameter in a range of 5-50 nanometers in an amount of 5-50 weight percent, and an inorganic binder. The inorganic binder is mixed at a weight ratio of 0.3-3.0 with respect to a weight of 1.0 of the inorganic colloid. The oxide system ceramic formed on the outermost surface of the substrate is an oxide containing 5% or more of a composite oxide comprising (a) at least one of Al, Ti, V, Cr, Fe, Co, Rh, In and rare earths, which are trivalent metal elements, and (b) at least one rare earth different from that used in (a). The sealing solution on the coating after permeation is then baked.Type: GrantFiled: July 3, 2000Date of Patent: September 4, 2001Assignee: Nippon Steel Hardfacing Co., Ltd.Inventors: Kiyohiro Tarumi, Munetoshi Hiroshige
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Patent number: 6274517Abstract: A method of fabricating an improved spacer comprising the steps of providing a semiconductor substrate that has a gate already formed thereon. A PNO spacer is formed on a sidewall of the gate. The method of forming the PNO spacer comprises first forming a PNO layer on the conductive layer and the semiconductor, and performing an anisotropic etching step on the PNO layer to form the PNO spacer. The step of forming the PNO layer includes chemical vapor deposition (CVD) using PH3, O2, NH3 and N2 as reagents. The step of etching the PNO layer includes plasma etching using CFX+O2 as plasma source. The material of the PNO spacer is a chemical compound PXNYOZ containing phosphorous (P), nitrogen (N) and oxygen (O) and does not contain silicon. Therefore, the PNO spacer can avoid erosion during etching and does not react with Ti during the Salicide process.Type: GrantFiled: December 30, 1998Date of Patent: August 14, 2001Assignee: United Microelectronics Corp.Inventor: Liang-Choo Hsia
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Publication number: 20010010837Abstract: A thin film of metal or metal compound is produced by preparing an ultrafine particle dispersion liquid by dispersing ultrafine particles at least partly made of metal into a given organic solvent, applying the ultrafine particle dispersion liquid to a substrate, drying the ultrafine particle dispersion liquid to leave metal or metal compound particles on the substrate, heating the metal or metal compound particles to join the metal or metal compound particles, and annealing the metal or metal compound particles into a thin film.Type: ApplicationFiled: December 1, 2000Publication date: August 2, 2001Inventors: Kuniaki Horie, Akira Fukunaga
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Patent number: 6254936Abstract: Systems and methods are described for environmental exchange control for a polymer on a wafer surface. An apparatus for controlling an exchange between an environment and a polymer on a surface of a wafer located in the environment includes: a chamber adapted to hold the wafer, define the environment, and maintain the polymer in an adjacent relationship with the environment; and a heater coupled to the chamber. A method for improving performance of a spin-on material includes: forming the spin-on material on a surface of a wafer; then locating the spin-on material in an environment so that said environment is adjacent said spin-on material; and then controlling an exchange between the spin-on material and said environment. The systems and methods provide advantages because inappropriate deprotection is mitigated by careful control of the environmental temperature and environmental species partial pressures (e.g. relative humidity).Type: GrantFiled: December 29, 1998Date of Patent: July 3, 2001Assignee: Silicon Valley Group, Inc.Inventors: Emir Gurer, Ed C. Lee, Tom Zhong, Kevin Golden, John W. Lewellen, Reese Reynolds, Scott C. Wackerman
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Patent number: 6180174Abstract: The invention provides a process for producing a coated Cu alloy having a surface which has a low coefficient of friction and a high resistance to abrasion and is suitable for fabricating connectors, charging-sockets of electric automobiles etc. The coated Cu alloy is produced by coating the surface of a copper alloy with Sn and heat treating the coated Cu alloy at a temperature in the range of 100-450° C. for 0.5-24 hours. The Cu alloy which is coated with Sn consists of 1-41 wt % Zn with the balance being Cu and incidental impurities. By using the coated Cu alloy, the force of insertion, resistance to abrasion and resistance to corrosion of connectors can be significantly improved.Type: GrantFiled: November 2, 1999Date of Patent: January 30, 2001Assignees: Dowa Mining Co., Ltd., Yazaki CorporationInventors: Akira Sugawara, Yoshitake Hana, Takayoshi Endo, Osamu Sugiyama