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| Number | Title | Issue Date |
| 7632455 | High temperature niobium alloy Niobium alloy compositions and systems comprising the niobium alloy composition are provided. The niobium alloy compositions comprises between about 10 atomic % and about 30 atomic % of titanium, between about 7 atomic % and about 20 atomic % of silicon, between abo... | 12/15/2009 |
| 7597842 | Hydrogen permeable alloy An Nb—Ti—Co alloy having both good hydrogen permeability and good hydrogen embrittlement resistance comprises one of Fe, Cu or Mn as a fourth element, incorporating from 1 to 14 mol %. The content of Mn, if any, is preferably from 1 to 9 mol %. The desired hydro... | 10/06/2009 |
| 7514036 | Hydrogen permeable alloy and method for producing the same A (Nb, Ti) phase in an Nb—Ti—Co alloy is composed of a granular structure. The Nb—Ti—Co alloy is preferably subjected to heat treatment at 800° C. or more so that the eutectic structure in the casted state can be changed to a granular structure. The Nb—Ti... | 04/07/2009 |
| 7325293 | Zirconia-stabilized multi-filamentary niobium-tin superconducting wire A multi-filament superconducting wire in which the filaments comprise zirconia-stabilized ultra-fine grain Nb3Sn. The superconducting wire is formed by wire-drawing a preform comprising a metallic matrix and at least one niobium alloy rod having zirconium... | 02/05/2008 |
| 7219412 | Methods of forming titanium-containing superconducting compositions The invention includes superconducting titanium-containing compositions having less than 200 ppm, by weight, of a combined total of interstitial materials selected from the group consisting of nitrogen, oxygen, carbon and hydrogen. The invention also includes method... | 05/22/2007 |
| 7001151 | Gas turbine bucket tip cap A tip cap for a turbine blade. The tip cap may include a HS-188 sheet material with a thickness of less than about 0.079 inches (about 2 millimeters) and a number of holes positioned in the sheet material. ... | 02/21/2006 |
| 6913655 | Niobium-silicide based composities resistant to high temperature oxidation A niobium-silicide refractory metal intermetallic composite adapted for use in a turbine component. The niobium-silicide refractory metal intermetallic composite comprises: between about 19 atomic percent and about 24 atomic percent titanium; between about 1 atomic ... | 07/05/2005 |
| 6855652 | Structurally reinforced panels A structurally reinforced panel and a method of forming the panel are disclosed. The reinforcement includes a fibrous woven material in a bondable plastic matrix. ... | 02/15/2005 |
| 6767653 | Coatings, method of manufacture, and the articles derived therefrom A turbine component comprises a substrate; and a crystalline coating disposed on a surface of the substrate, wherein the crystalline coating comprises tin and yttrium in an amount greater than or equal to about 0.05 atomic percent based upon the total coating. A met... | 07/27/2004 |
| 6521356 | Oxidation resistant coatings for niobium-based silicide composites An environmentally resistant coating for improving the oxidation resistance of a niobium-based refractory metal intermetallic composite (Nb-based RMIC) at high temperatures, the environmentally resistant coating comprising silicon, titanium, chromium, and... | 02/18/2003 |
| 6447623 | Creep resistant Nb-silicide based two-phase composites A two-phase niobium-based silicide composite exhibits creep resistance at temperatures equal to or greater than 1150° C. The niobium-based silicide composite comprises at least silicon (Si) hafnium (Hf), titanium (Ti), and niobium (Nb). The concentration... | 09/10/2002 |
| 6428910 | Nb-based silicide composite compositions A refractory metal intermetallic composition comprising titanium (Ti), hafnium (Hf), silicon (Si), aluminum (Al), chromium (Cr), germanium (Ge), tin (Sn), iron (Fe), and a balance of niobium (Nb) for use in composite structures having applications in turb... | 08/06/2002 |
| 6419765 | Niobium-silicide based composites resistant to low temperature pesting A niobium-silicide refractory metal intermetallic composite having enhanced material characteristics, such as oxidation resistance, creep resistance, and toughness, and turbine components made therefrom. The composite comprises between about 14 atomic per... | 07/16/2002 |
| 6409848 | Creep resistant Nb-silicide based multiphase composites A niobium-based silicide composite exhibiting creep resistance at temperatures equal to or greater than 1150° C. The niobium-based silicide composite comprises at least silicon (Si), hafnium (Hf), titanium (Ti), and niobium (Nb). A concentration ratio of... | 06/25/2002 |
| 6238491 | Niobium-titanium-zirconium-molybdenum (nbtizrmo) alloys for dental and other medical device applications The present invention is a medical implant or device fabricated, in any manner, from a niobium (Nb)--titanium (Ti)--zirconium (Zr)--Molybdenum (Mo) alloy (NbTiZrMo alloy). The implant or device has components at least partially fabricated from a metal all... | 05/29/2001 |
| 5942055 | Silicide composite with niobium-based metallic phase and silicon-modified Laves-type phase A silicide-based composite toughened with a niobium-based metallic phase and further containing a silicon-modified chromium-based Laves-type phase to promote oxidation resistance. The silicide-based composite generally contains one or more silicide interm... | 08/24/1999 |
| 5932033 | Silicide composite with niobium-based metallic phase and silicon-modified laves-type phase A silicide-based composite toughened with a niobium-based metallic phase, and further containing a phase that significantly improves the oxidation resistance of the composite. The oxidation-resistant phase is a chromium-based Laves-type phase modified wit... | 08/03/1999 |
| 5846483 | Selenized dairy Se-Ni-Sn-Zn-Cu metal Selenium bearing copper-nickel, corrosion resistant and gall resistant castable alloy, particularly for food processing machine parts, with the following weight percentage range: Ni=10-40 Zn=2-6 Sn=2-7 Se=1-4 Bi=0-3 Fe=0-3 P=0-0.2 Cu=Balance... | 12/08/1998 |
| 5833773 | Nb-base composites Nb-base alloys that include Ti, Hf, Cr, Al and Si as alloy constituents have a microstructure that includes a metallic solid solution phase and a mixture of intermetallic silicide phases. The metal silicide phases include an M3 Si silicide, whe... | 11/10/1998 |
| 5741376 | High temperature melting niobium-titanium-chromium-aluminum-silicon alloys High temperature melting niobium-titanium-chromium-aluminum-silicon alloys having a wide range of desirable microstructures, excellent microstructural and morphological properties, superior oxidation resistance at temperatures from 1000° C. to 1500° C.,... | 04/21/1998 |
| 5721061 | Oxidation-resistant coating for niobium-base alloys Si-Fe-Cr base coating alloys that significantly promote the oxidation resistance of niobium-base alloys and intermetallic materials when deposited and reaction bonded to the niobium-base material. The coating alloys are deposited and then reaction bonded ... | 02/24/1998 |
| 5580431 | Composite wire microelectrode and method of making same A composite wire microelectrode for making electro-chemical measurements, and method of making same. The microelectrode includes an inner conductive sensing wire and an outer tube that is oxidized to form a dielectric, self-healing oxide layer around the ... | 12/03/1996 |
| 5522945 | Method for forming triniobium tin superconductor with bismuth A method for making triniobium tin superconductor with improved critical current density is disclosed where an annealed niobium-base substrate is passed through a tin alloy bath containing tin, copper, and bismuth, to coat the substrate with tin and then ... | 06/04/1996 |
| 5486242 | Niobium or tantalum based high specific strength inter metallic compounds and alloys Tantalum-based and niobium-based alloys made up entirely of a crystalline medium exhibiting a substantially continuous centered cubic structure, comprising an intermetallic compound of formula Ti2 AlMo, and having the following compositions on ... | 01/23/1996 |
| 5482577 | Amorphous alloys resistant against hot corrosion An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of at least one element selected from the group of Al and Cr and at least one element selected from refractory metals of Mo. W... | 01/09/1996 |
| 5460663 | High corrosion resistant amorphous alloys Amorphous alloys having an extremely high corrosion resistance comprise Cr and at least one element selected from Ta and Nb, as essential components, and are spontaneously passive owing to the formation of stable protective films, even in very corrosive e... | 10/24/1995 |
| 5423680 | Palladium, gallium and copper-free alloy having high thermal expansion coefficient A dental alloy is provided which is free of palladium, gallium and copper and which is compatible with a wide variety of composites and porcelain compositions. The alloy has a melting range of between about 870° C. and 1230° C. and a coefficient of ther... | 06/13/1995 |
| 5380375 | Amorphous alloys resistant against hot corrosion An amorphous alloy which is resistant to hot corrosion in sulfidizing and oxidizing atmospheres at high temperatures, consisting of Cr and at least one element selected from refractory metals of Nb and Ta, a portion of the set forth refractory metals bein... | 01/10/1995 |
| 5316865 | Composite structure with NbTiAl low Hf alloy matrix and niobium base metal reinforcement Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based alloy are provided. The matrix is preferably an alloy having a niobium and titanium base according to the ... | 05/31/1994 |
| 5296309 | Composite structure with NbTiAlCr alloy matrix and niobium base metal reinforcement Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based alloy are provided. The matrix is preferably an alloy having a niobium and titanium base according to the ... | 03/22/1994 |
| 5284618 | Niobium and titanium based alloys resistant to oxidation at high temperatures A niobium and titanium based alloy having a density less than 6.5 and possessing a high resistance to oxidation at high temperatures in the region of 900° C. has a chemical composition comprising, in atomic percentages: more than 24% Nb from 30 to 48% Ti... | 02/08/1994 |
| 5273831 | Clad structural member with NbTiAlCr HF alloy cladding and niobium base metal core Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based cladding alloy are provided. The cladding is preferably an alloy having a niobium and titanium base accord... | 12/28/1993 |
| 5270122 | Composite structure with NbTiAl alloy matrix and niobium base metal reinforcement Composite structures having a higher density, stronger reinforcing niobium based alloy embedded within a lower density, lower strength niobium based alloy are provided. The matrix is preferably an alloy having a niobium and titanium base according to the ... | 12/14/1993 |
| 5226947 | Niobium-titanium superconductors produced by powder metallurgy having artificial flux pinning centers Superconductors formed by powder metallurgy have a matrix of niobium-titanium alloy with discrete pinning centers distributed therein which are formed of a compatible metal. The artificial pinning centers in the Nb-Ti matrix are reduced in size by process... | 07/13/1993 |
| 5190602 | Heterophase titanium aluminides having orthorhombic and omega-type microstructures An alloy comprising titanium, aluminum and niobium has a heterophase micrructure of an orthorhombic, Ti2 AlNb, phase and an omega-type, B82, phase. An alloy is annealed to form the heterophase alloy with the orthorhombic and omega-t... | 03/02/1993 |
| 5180446 | Oxide-dispersion-strengthened niobum-based alloys and process for preparing Improvement of Nb-alloys, which are known as heat-resistant alloys, by giving anti-oxidation property thereto and increasing the high temperature strength thereof. In addition to a determined amount of Al, one of (1) suitable amounts of Ti, Cr and V, and ... | 01/19/1993 |
| 5171379 | Tantalum base alloys A wrought metal alloy product having a tantalum or niobium base metal, 10 to 1000 ppm silicon, and 10 to 10000 ppm yttrium nitride. Fine uniform grain size contributes to improved ductility.... | 12/15/1992 |
| 5032357 | Tri-titanium aluminide alloys containing at least eighteen atom percent niobium An improved titanium aluminide alloy contains from about 18 to 30 atomic percent aluminum, about 34 to 18 atomic percent niobium, with the balance titanium. In alloys of this invention a substatial portion of the microstructure, comprising at least about ... | 07/16/1991 |
| 5030300 | Amorphous aluminum alloys An amorphous aluminum-refractory metal alloy with special characteristics such as high corrosion resistance, high wear resistance and considerable toughness, consisting of Al and at least one element selected from refractory metals of Ta, Nb, Mo and W, a ... | 07/09/1991 |
| 5028390 | Niobium-based superalloy compositions A superalloy composition comprising niobium, an element selected from the group consisting of rhenium and technetium, and, optionally, an element selected from the lanthanide and actinide series, scandium, yttrium and lanthanum.... | 07/02/1991 |
