Noble Metal Containing Patents (Class 420/35)
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Patent number: 11254040Abstract: A subject of the invention is a process for surfacing or resurfacing a metal part by laser-assisted deposition of a filler material in order to produce an abradable coating of the part, the process being characterized in that the filler material is an iron-based powder comprising vanadium, chromium, nickel, boron, silicon and carbon, in that the laser has an operational wavelength ranging from 900 nm to 1100 nm and in that it comprises the irradiation of the part by a laser beam such that the specific energy (SE) varies from 5 J/mg to 10 J/mg and such that the linear density (LD) varies from 25 mg/mm to 55 mg/mm. Another subject of the invention is the surfaced or resurfaced metal part. Another subject of the invention is a pre-alloy in iron-based powder form, comprising vanadium, chromium, nickel, boron, silicon and carbon.Type: GrantFiled: October 6, 2016Date of Patent: February 22, 2022Assignees: COMPAGNIE GENERAL DES ETABLISSISIEMENTS MICHELIN CLERMONT-FERRAND, FRANCE, ASSOCIATION POUR LA RECHERCHE DEVELOPPEMENT DES METHODES ET PROCESSUS INDUSTRIELS-A.R.M.IN.E.S., ECOLE NATIONALE D'INGENIEURS DE SAINT ETIENNE SAINT ETIENNE, FRANCE, DMA LASERInventors: Bernard Cappa, Cédric Carlavan, Christophe Colin, Maryane Jacquier, Julien Sijobert, Ludovic Thivillon
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Patent number: 9920412Abstract: A composition, method for depositing the composition on a downhole component, and a downhole tool. The composition includes about 0.25 wt % to about 1.25 wt % of carbon, about 1.0 wt % to about 3.5 wt % of manganese, about 0.1 wt % to about 1.4 wt % of silicon, about 1.0 wt % to about 3.0 wt % of nickel, about 0.0 to about 2.0 wt % of molybdenum, about 0.7 wt % to about 2.5 wt % of aluminum, about 1.0 wt % to about 2.7 wt % of vanadium, about 1.5 wt % to about 3.0 wt % of titanium, about 0.0 wt % to about 6.0 wt % of niobium, about 3.5 wt % to about 5.5 wt % of boron, about 0.0 wt % to about 10.0 wt % tungsten, and a balance of iron.Type: GrantFiled: August 28, 2014Date of Patent: March 20, 2018Assignee: ANTELOPE OIL TOOL & MFG. CO.Inventors: Joe Lynn Scott, John H. Gammage
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Patent number: 8580189Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about C Mn Si P S ?0.030 ?2.00 ?0.750 ?0.023 ?0.010 Cr Mo Ni Fe “X” 8.5-11.5 0.0-6.25 6.5-7.5 46.185-74.000 5.0-10.0 whereby variable “X” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, or Tungsten. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved biocompatible characteristics.Type: GrantFiled: July 16, 2008Date of Patent: November 12, 2013Assignee: Boston Scientific Scimed, Inc.Inventor: Charles Horace Craig
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Patent number: 8535606Abstract: Disclosed are corrosion resistant, non-magnetic austenitic stainless steels containing alloying elements molybdenum, nickel, and copper and further containing small quantities of an additional element selected from the group consisting of a rare-earth element, calcium, cobalt, iridium, osmium, rhenium, rhodium, ruthenium, silver, and a combination thereof.Type: GrantFiled: July 9, 2009Date of Patent: September 17, 2013Assignee: Baker Hughes IncorporatedInventor: Hendrik John
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Publication number: 20120187093Abstract: A filler material for welding is characterized by the following chemical composition (amounts in % by weight): 0.05-0.15 C, 8-11 Cr, 2.8-6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 1-3 Re, 0.001-0.07 Ta, 0.01-0.06 N, 0-60 ppm Pd, max. 0.25 P, max. 0.02 S, remainder Fe and manufacturing-related unavoidable impurities. The material has outstanding properties, in particular a good creep rupture strength/creep resistance, a good oxidation resistance and a very high toughness.Type: ApplicationFiled: January 10, 2012Publication date: July 26, 2012Inventors: Mohamed Youssef Nazmy, Claus Paul Gerdes, Andreas Kuenzler, Sorin Keller
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Patent number: 8007715Abstract: A steel has the following chemical composition (amounts in % by weight): 0.05-0.14 C, 8-13 Cr, 1-2.6 Ni, 0.5-1.9 Mo, 0.5-1.5 Mn, 0.15-0.5 Si, 0.2-0.4 V, 0-0.04 B, 2.1-4.0 Re, 0-0.07 Ta, 0-60 ppm Pd, remainder Fe and unavoidable impurities. The steel can be used effectively as a welding additive material and has outstanding properties at very high temperatures, in particular a good creep rupture strength/resistance and a good oxidation resistance.Type: GrantFiled: February 12, 2010Date of Patent: August 30, 2011Assignee: ALSTOM Technology Ltd.Inventors: Mohamed Nazmy, Paul Claus Gerdes, Andreas Kuenzler
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Patent number: 7780798Abstract: Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the presence of the second composition gives the mixture a greater hardness than that of the first composition alone. The first composition includes less than about 25 weight percent chromium, less than about 7 weight percent molybdenum, from about 10 to about 35 weight percent nickel, and iron. The second composition is different from the first and is present from about 0.1 weight percent to about 5 weight percent of the mixture.Type: GrantFiled: March 29, 2007Date of Patent: August 24, 2010Assignees: Boston Scientific Scimed, Inc., CRS Holdings, Inc.Inventors: Jonathan S. Stinson, Matthew Cambronne, Richard B. Frank, Richard A. Gleixner, James E. Heilmann
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Publication number: 20100114304Abstract: Alloy compositions suitable for fabricating medical devices, such as stents, are disclosed. In certain embodiments, the compositions have small amounts of nickel, e.g., the compositions can be substantially free of nickel.Type: ApplicationFiled: October 5, 2009Publication date: May 6, 2010Applicant: SCIMED LIFE SYSTEMSInventor: Charles Horace Craig
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Publication number: 20100012232Abstract: Disclosed are corrosion resistant, non-magnetic austenitic stainless steels containing alloying elements molybdenum, nickel, and copper and further containing small quantities of an additional element selected from the group consisting of a rare-earth element, calcium, cobalt, iridium, osmium, rhenium, rhodium, ruthenium, silver, and a combination thereof.Type: ApplicationFiled: July 9, 2009Publication date: January 21, 2010Applicant: BAKER HUGHES INCORPORATEDInventor: Hendrik John
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Patent number: 7601230Abstract: Alloy compositions suitable for fabricating medical devices, such as stents, are disclosed. In certain embodiments, the compositions have small amounts of nickel, e.g., the compositions can be substantially free of nickel.Type: GrantFiled: September 27, 2007Date of Patent: October 13, 2009Assignee: Scimed Life Systems, Inc.Inventor: Charles Horace Craig
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Publication number: 20090214376Abstract: The disclosure relates to a creep-resistant steel which having a chemical composition (values in % by weight) of: about 0.10 to 0.15 C, 8 to 13 Cr, 0.1 to 0.5 Mn, 2 to 3 Ni; at least one or both elements from the group Mo, W in a range in each case of about 0.5 to 2.0 or, if both elements are present, a maximum total of about 3.0; about 0.02 to 0.2 Nb, 0.05 to 2 Ta, 0.1 to 0.4 V, 0.005 to 2 Pd, 0.02 to 0.08 N, 0.03 to 0.15 Si; and about 80 to 120 ppm B, maximum about 100 ppm Al, maximum about 150 ppm P, maximum about 250 ppm As, maximum about 120 ppm Sn, maximum about 30 ppm Sb, maximum 50 ppm S, a remainder of the composition being iron and impurities.Type: ApplicationFiled: February 23, 2009Publication date: August 27, 2009Applicant: ALSTOM Technology LtdInventors: Mohamed NAZMY, Andreas Kuenzler, Markus Staubli
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Publication number: 20080281401Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about C Mn Si P S ?0.030 ?2.00 ?0.750 ?0.023 ?0.010 Cr Mo Ni Fe “X” 8.5-11.5 0.0-6.25 6.5-7.5 46.185-74.000 5.0-10.0 whereby variable “X” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, or Tungsten. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved biocompatible characteristics.Type: ApplicationFiled: July 16, 2008Publication date: November 13, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: Charles Horace Craig
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Patent number: 7445749Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about C Mn Si P S ?0.030 ?2.00 ?0.750 ?0.023 ?0.010 Cr Mo Ni Fe “X” 8.5-11.5 0.0-6.25 6.5-7.5 46.185-74.000 5.0-10.0 whereby variable “x” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium, Tantalum, or Tungsten. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved biocompatible characteristics.Type: GrantFiled: January 28, 2003Date of Patent: November 4, 2008Assignee: Boston Scientific Scimed, Inc.Inventor: Charles Horace Craig
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Publication number: 20080091267Abstract: Medical devices, such as endoprostheses, and methods of making the devices are disclosed. The endoprostheses comprise a tubular member capable of maintaining patency of a bodily vessel. The tubular member includes a mixture of at least two compositions, where the presence of the second composition gives the mixture a greater hardness than that of the first composition alone. The first composition includes less than about 25 weight percent chromium, less than about 7 weight percent molybdenum, from about 10 to about 35 weight percent nickel, and iron. The second composition is different from the first and is present from about 0.1 weight percent to about 5 weight percent of the mixture.Type: ApplicationFiled: March 29, 2007Publication date: April 17, 2008Inventors: Jonathan S. Stinson, Matthew Cambronne, Richard B. Frank, Richard A. Gleixner, James E. Heilmann
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Publication number: 20080069718Abstract: Alloy compositions suitable for fabricating medical devices, such as stents, are disclosed. In certain embodiments, the compositions have small amounts of nickel, e.g., the compositions can be substantially free of nickel.Type: ApplicationFiled: September 27, 2007Publication date: March 20, 2008Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventor: Charles Horace Craig
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Patent number: 6780258Abstract: A new austenitic stainless steel containing approximately 0.1-1.0 mass % of Si and not more than approximately 0.003 mass % of Al. Nonmetallic inclusions dispersed in a steel matrix are converted to MnO—SiO2—Al2O3 containing not less than approximately 15 mass % of SiO2 and not more than approximately 40 mass % of Al2O3. During steel making, molten steel is covered with basic slag and heavily deoxidized with a Si alloy whose Al content is controlled to not more than approximately 1.0 mass % in a vacuum or non-oxidizing atmosphere. The austenitic stainless steel sheet can be formed to an objective shape without the occurrence of cracking due to its decrease in susceptibility to cracking and its good formability.Type: GrantFiled: January 8, 2002Date of Patent: August 24, 2004Assignee: Nisshin Steel Co., Ltd.Inventors: Junichi Katsuki, Teruyoshi Iida, Takashi Yamauchi, Satoshi Suzuki, Naoto Hiramatsu
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Publication number: 20030194343Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about 1 C Mn Si P S ≦0.030 ≦2.00 ≦0.750 ≦0.023 ≦0.010 Cr Mo Ni Fe “X” 8.5-11.5 0.0-6.25 6.5-7.5 46.185-74.000 5.0-10.Type: ApplicationFiled: January 28, 2003Publication date: October 16, 2003Applicant: Scimed Life Systems, Inc., a Minnesota CorporationInventor: Charles Horace Craig
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Patent number: 6582652Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about C Mn Si P S Cr Mo ≦0.030 ≦2.00 ≦0.750 ≦0.023 ≦0.010 8.5-11.5 0.0-6.25 Ni Fe “X” 6.5-7.5 46.185-74.000 5.0-10.0 whereby variable “X” could be comprised from a group consisting of Gold, Osmium, Palladium, Platinum, Rhenium Tantalum, or Tungsten. The alloy provides a unique combination of strength, ductility, corrosion resistance, and other mechanical properties which also has improved biocompatible characteristics.Type: GrantFiled: May 11, 2001Date of Patent: June 24, 2003Assignee: Scimed Life Systems, Inc.Inventor: Charles Horace Craig
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Publication number: 20030053925Abstract: The present invention is directed towards an austenitic, stainless steel series 300 alloy having improved biocompatible characteristics. The modified stainless steel alloy consists essentially of, in weight percent, about 1 C Mn Si P S ≦0.030 ≦2.00 ≦0.750 ≦0.023 ≦0.010 Cr Mo Ni Fe “X” 8.5-11.5 0.0-6.25 6.5-7.5 46.185-74.000 5.0-10.Type: ApplicationFiled: May 11, 2001Publication date: March 20, 2003Inventor: Charles Horace Craig
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Patent number: 6475642Abstract: An oxidation-resistant coating is described, formed of an alloy containing: about 40 to about 50 atom % aluminum and about 0.5 atom % to about 3 atom % tantalum; with a balance of nickel; cobalt, iron, or combinations thereof. The coating may also include chromium and a precious metal, as well as other components, such as zirconium or molybdenum. A method for applying the oxidation-resistant coating to a substrate is also described. The substrate can be formed of superalloy material, e.g., a turbine engine component. Related articles are also disclosed.Type: GrantFiled: August 31, 2000Date of Patent: November 5, 2002Assignee: General Electric CompanyInventors: Ji-Cheng Zhao, Melvin Robert Jackson, Ramgopal Darolia
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Patent number: 6391253Abstract: The present invention provides a stainless steel being excellent in workability, corrosion resistance and antibacterial property. To be more specific, a stainless steel containing 10 wt % or more of Cr is rendered to contain 0.0001-1 wt % of Ag, or further one or more members selected from Sn: 0.0002-0.02 wt %, Zn: 0.0002-0.02 wt %, Pt: 0.0002-0.01 wt %, and, in addition, is rendered to dispersedly contain a total of 0.001 % or more in an area percentage of one or more members of a silver particle, a silver oxide and a silver sulphide each having a mean grain diameter of 500 &mgr;m or less. To disperse the silver particle, silver oxide and silver sulphide uniformly, the casting rate of continuous casting is preferably controlled to range from 0.8 to 1.6 m/min.Type: GrantFiled: November 5, 1999Date of Patent: May 21, 2002Assignee: Kawasaki Steel CorporationInventors: Misako Tochihara, Takeshi Yokoto, Susumu Satoh, Sadao Hasuno
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Patent number: 6306341Abstract: The present invention provides a stainless steel having superior corrosion resistance, antibacterial properties, and durability, the antibacterial properties being maintained after surface treatments commonly performed including, for example, polishing. In particular, the stainless steel contains not less than 10 percent by weight of chromium, 0.001 to 0.30 percent by weight of silver, or further contains 0.001 to 1.0 percent by weight of vanadium. In addition, not less than 0.0005 weight percent of a silver oxide, the amount thereof being not more than 1.1 times that of the silver, is dispersed in the stainless steel. In order to homogeneously disperse the silver oxide in the stainless steel, when continuous casting of molten steel is performed, the casting rate for the continuous casting is preferably 0.8 to 1.6 m/min. A method for manufacturing the stainless steel is also disclosed.Type: GrantFiled: January 28, 2000Date of Patent: October 23, 2001Assignee: Kawasaki Steel CorporationInventors: Takeshi Yokota, Misako Tochihara, Susumu Satoh, Sadao Hasuno
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Patent number: 5583900Abstract: This invention provides austenitic steel having a superior resistance to neutron irradiation, a nuclear reactor and a nuclear fission reactor using such steel.In the present invention, austenitic steel containing at least one of Pd and Pt is used for a member which undergoes neutron irradiation in high-temperature water. More specifically, the steel consists essentially of not more than 0.02% C, not more than 1% Si, 0.5-15% Mn, 9-26% Cr, 8-20% Ni, 0.5-3% Mo, at least one kind of 0.1-16% selected from the group consisting of Pd and Pt, and not less than 50% Fe, and may further contain not more than 1.0% of at least one kind selected from the group consisting of Nb, Ti, Zr, Hf and V, and this is used for structural members in a core of a nuclear reactor and a nuclear fission reactor.Type: GrantFiled: March 17, 1994Date of Patent: December 10, 1996Assignee: Hitachi, Ltd.Inventors: Shigeki Kasahara, Kiyotomo Nakata, Shizuka Shimanuki, Shinzo Ikeda, Masayoshi Kanno
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Patent number: 5449489Abstract: Turbine engine alloys modified by the addition of small amounts of gold are found to have improved properties over similar alloys that do not contain Au. These improved alloys have special application in gas turbines and jet engines. Preferred composition ranges are (36 to 45) wt % Ni-(25 to 32) wt % Fe-(16 to 21) wt % Cr-(0.3 to 0.4) wt % Al-(0.3 to 0.4) wt % Ti-(0.6 to 0.8) wt % Mn-(0.3 to 0.4) wt % Cu-(0.02 to 0.05) wt % C-(0.02 to 20) wt % Au and (44 to 56) wt % Fe-(20 to 26) wt % Ni-(12 to 16) wt % Cr-(1 to 1.3) wt % Mo-(1.7 to 2.2) wt % Ti-(0.2 to 0.3) wt % V-(0.15 to 0.21) wt % Al-(0.001 to 0.003) wt % B-(0.15 to 0.21) wt % Mn-(0.3 to 0.7) wt % Si-(0.02 to 0.05) wt % C-(0.02 to 20) wt % Au.Type: GrantFiled: September 28, 1994Date of Patent: September 12, 1995Assignee: Duke UniversityInventors: Roland Gettliffe, Franklin H. Cocks
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Patent number: 5340534Abstract: An austenitic, stainless steel alloy having a good combination of galling resistance and corrosion resistance is disclosed containing in weight percent about:______________________________________ Broad Intermediate Preferred ______________________________________ C 0.25 max. 0.02-0.15 0.05-0.12 Mn 3-10 4-8 5-7 Si 2.25-5 2.5-4.5 3-4 Cr 15-23 16.5-21 17.5-19 Ni 2-12 4-10 6-9 Mo 0.5-4.0 0.5-2.5 0.75-1.5 N 0.35 max. 0.05-0.25 0.10-0.20 ______________________________________and the balance of the alloy is essentially iron. This alloy also has good resistance to formation of deformation-induced martensite as indicated by the alloy's low work-hardening rate and low magnetic permeability when cold-rolled to a 50% reduction in cross-sectional area.Type: GrantFiled: August 24, 1992Date of Patent: August 23, 1994Assignee: CRS Holdings, Inc.Inventor: John H. Magee
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Patent number: 5151248Abstract: An austenitic stainless steel for use for high temperature concentrated sulfuric acid which comprises, on weight basis, 0.04% or less of C, 5-7% of Si, 2% or less of Mn, 15-25% of Cr, 4-24% of Ni, 0.01-1.07% of Pd and the rest consisting of Fe and unavoidable contaminant materials. By the incorporation of small amount of palladium in a basal austenitic stainless steel containing the essential three elements of Cr, Ni and Si, a superior corrosion resistance against highly concentrated high temperature sulfuric acid is attained.Type: GrantFiled: December 13, 1991Date of Patent: September 29, 1992Assignee: Mitsubishi Jukogyo Kabushiki KaishaInventors: Ryuichiro Ebara, Hideo Nakamoto, Naohiko Ukawa, Tamotsu Yamada, Yasuo Nishimura
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Patent number: 5147602Abstract: A high-chromium stainless steel alloy having improved resistance to stress corrosion cracking in high temperature water is comprised of, in weight percent; about 22 to 32 percent chromium, about 16 to 40 percent nickel, up to about 10 percent manganese, up to about 0.06 percent carbon, and the balance substantially iron. A preferred high-chromium alloy is further comprised of about 2 to 9 weight percent of a metal from the group consisting of titanium, niobium, tantalum, and mixtures thereof. Another preferred high-chromium alloy is further comprised of a platinum group metal in an effective amount to reduce the corrosion potential of the alloy in high-temperature water provided with hydrogen.Type: GrantFiled: May 20, 1991Date of Patent: September 15, 1992Assignee: General Electric CompanyInventors: Peter L. Andresen, Leonard W. Niedrach
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Patent number: 4983356Abstract: A substantial gain in the properties of conventional FeCrAlY is achieved by adding RuAl to a melt of the conventional material. The resultant composition has a use temperature above the melting point of nickel base superalloys and has good strength and ductility properties to permit its use as a high temperature structural material.Type: GrantFiled: July 31, 1989Date of Patent: January 8, 1991Assignee: General Electric CompanyInventor: Melvin R. Jackson
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Patent number: 4917860Abstract: Alloys are provided which consist essentially of between about 4% and 18.5% by weight nickel, from about 24% to about 30% by weight chromium, from about 0.35 to about 1% by weight molybdenum, from about 2.7% to about 4.5% by weight copper, from about 2.7% to about 4.5% by weight silicon, up to about 1.5% by weight manganese, up to about 0.25% by weight nitrogen, up to about 0.8% by weight columbium (niobium), up to about 1.0% by weight tantalum, up to about 0.007% by weight boron, up to about 0.35% by weight vanadium, up to about 0.8% by weight tungsten, up to about 0.08% by weight carbon, up to about 0.6% by weight titanium and the balance essentially iron. Small amounts of cobalt as naturally occur in some ores may be present but are considered a part of the nickel content.Type: GrantFiled: January 10, 1989Date of Patent: April 17, 1990Assignee: Carondelet Foundry CompanyInventor: John H. Culling
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Patent number: 4911883Abstract: Stainless steels possessing a superior cold workability and hot workability, which are yet economical. The stainless steels comprise not more than 0.04% carbon, not more than 0.60% silicon, 2.2-3.8% manganese, 2.5-4.0% copper, 6-8% nickel, 17-19% chromium, and the remainder being iron together with impurities. And, not more than 0.002% sulfur is decreased to provide stainless steels which possess superior corrosion resistance, and not more than 0.010% nitrogen are decreased in the stainless steels as required.Type: GrantFiled: July 8, 1988Date of Patent: March 27, 1990Assignee: Aichi Steel Work, Ltd.Inventors: Kenichi Kumagai, Yoshinobu Honkura, Toru Matsuo, Kouji Murata
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Patent number: 4902472Abstract: A high strength stainless steel having a tensile strength of not less than 230 kgf/mm.sup.2 is disclosed, which comprises 0.01-0.015 st % of C and/or N, 1.0-4.0 wt % of Cu, 9.5-10.9 wt % of Ni, 12.0-17.0 wt % of Cr, 0.5-2.5 wt % of Al and/or Ti, 0.003-0.011 wt % of B, 0.02-0.2 wt % of Be and the balance of Fe, and has a temperature (Md.sub.30) of transforming 50% of austenite into martensite under a true strain of 0.3 within a range of from room temperature to -196.degree. C.Type: GrantFiled: June 17, 1988Date of Patent: February 20, 1990Assignee: Daido Tokushuko Kabushiki KaishaInventors: Susumu Isobe, Hisao Kamiya
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Patent number: 4822415Abstract: A novel iron based alloy is disclosed which is characterized by high resistance to wear and corrosion. The alloy consists essentially of 0 to 40% chromium, 1 to 40% molybdenum, 1 to 15% copper, 0.2 to 5% boron, and 0.01 to 2% carbon; the balance being incidental impurities and at least 30% iron, with the molydenum being at least 10% if the boron is greater than 2%. The alloy is preferably in the form of a powder for thermal spraying, and coatings produced thereby may have an amorphous structure.Type: GrantFiled: November 22, 1985Date of Patent: April 18, 1989Assignee: Perkin-Elmer CorporationInventors: Mitchell R. Dorfman, Subramaniam Rangaswamy, Josph D. Reardon
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Patent number: 4810313Abstract: A gold solder matching 14 karat yellow gold. The solder is typically employed in jewelry repair and is comprised of discrete particles of gold alloy and a flux to which a small amount of water is added to provide a fluid, liquid-like, easily worked solder. The gold alloy consists essentially of about 45% silver, about 20% copper, about 25% gold and about 10% brass.Type: GrantFiled: March 14, 1988Date of Patent: March 7, 1989Assignee: Virginia McReynoldsInventor: Mario E. Morales
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Patent number: 4761187Abstract: A method of improving the stress corrosion resistance of an alloy comprising heating a martensitic stainless steel to a molten state and incorporating into said molten steel from 0.5 to 2.0 weight percent of an additive selected from the group consisting of platinum, palladium or a mixture thereof.Type: GrantFiled: August 25, 1986Date of Patent: August 2, 1988Assignee: Rockwell International CorporationInventors: Neil E. Paton, Daniel P. Dennies, Jesse B. Lumsden, Lillian W. Ng