Iron Containing Patents (Class 420/581)
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Patent number: 4576638Abstract: A process for the production of ferromanganese from iron-containing manganese ores, in which the reduction of the ore, which is mixed with coal and slag-forming constituents, is conducted in a rotary kiln at 1200.degree. to 1350.degree. C. in the presence of a CO-containing atmosphere for 20 to 240 minutes, and in which melting follows in a melting furnace at 1400.degree. to 1600.degree. C. By this process, the greatest part of the gangue of manganese ore can be separated off before melting the reduced ore.Type: GrantFiled: December 20, 1984Date of Patent: March 18, 1986Assignee: Fried. Krupp Gesellschaft mit beschraenkter HaftungInventors: Hermann Doerr, Thomas Hoster, Dieter Neuschuetz, Dietrich Radke, Wilhelm Janssen, Klaus Ulrich
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Patent number: 4568388Abstract: Compacted graphite (CG) cast iron is obtained in the inmold casting process employing as an additive an alloy comprising 1.5-3 percent magnesium, 10-20 percent titanium, 40-80 percent silicon, 0-2 percent rare earth, 0-0.5 percent calcium, 0-2 percent aluminum and balance iron.Type: GrantFiled: February 11, 1985Date of Patent: February 4, 1986Assignee: Foote Mineral CompanyInventors: Charles E. Dremann, Thomas F. Fugiel
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Patent number: 4533389Abstract: A homogeneous boron containing alloy is disclosed with a composition which can be essentially represented by the formula of: M.sub.i T.sub.j B.sub.k where M is a metal from the group of nickel, iron, cobalt or a mixture thereof; T is a refractory metal from the group of molybdenum, tungsten, or a mixture thereof; and B is the element boron. The subscripts i, j, k are the respective atomic percent of each of the constituents and vary respectively between about 25 and 98, between about 1 and 40, and between 1 and 35 with the proviso that j>k, and i+j+k=100. By further limitation of the chemistry, it is possible to assure the alloy will age harden.Type: GrantFiled: December 29, 1980Date of Patent: August 6, 1985Assignee: Allied CorporationInventors: Deepak Kapoor, Chung-Chu Wan, Rong Y. Wang
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Patent number: 4523950Abstract: A homogeneous boron containing alloy is disclosed with a composition which can be essentially represented by the formula of: M.sub.i T.sub.j B.sub.k where M is a metal from the group of nickel, iron, cobalt or a mixture thereof; T is a refractory metal from the group of molybdenum, tungsten, or a mixture thereof; and B is the element boron. The subscripts i, j, k are the respective atomic percent of each of the constituents and vary respectively between about 25 and 98, between about 1 and 40, and between 1 and 35 with the proviso that j>k, and i+j+k=100. By further limitation of the chemistry, it is possible to assure the alloy will age harden.Type: GrantFiled: November 9, 1981Date of Patent: June 18, 1985Assignee: Allied CorporationInventors: Chung-Chu Wan, Rong Y. Wang, Deepak Kapoor
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Patent number: 4504310Abstract: A process for the production of high purity metals or metallic alloys comprises the steps of:(a) producing a metal or metallic alloy, the non-metallic inclusions of which are, preferably, easily reducible oxides of the base metal;(b) milling the metal or metallic alloy thus obtained and agglomerating the milled metal or metallic alloy with an agglomerating agent and a reducing agent, so as to form balls; and(c) subjecting the balls to a reducing treatment under regulated conditions of reduced pressure and elevated temperature, at which the reducing agent acts on the non-metallic inclusions while substantial sublimation of the alloying metal or metals is avoided.The invention is particularly applicable to the production of high purity chromium.Type: GrantFiled: August 5, 1983Date of Patent: March 12, 1985Assignee: C. DelachauxInventor: Laurent L. Boulier
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Patent number: 4490169Abstract: Low grade ores, such as low-grade manganese ore, are reduced in an electric smelting furnace having two melting zones divided by a barrier. The ore and a small quantity of carbon are melted in the first zone at a temperature sufficient to reduce the iron oxide contained in the ore to molten iron, leaving molten layers of ore and slag which are richer in manganese than the starting material. The melt and slag are allowed to flow over the barrier to the second zone where a second charge of ore and a greater amount of carbon are deposited. Electrode melting in the second zone is carried out at a higher temperature to reduce the manganese and remaining iron therein to form a high-grade ferromanganese product. The molten products are tapped from the furnace in the respective zones. The method of the present invention may be used with other ores such as low grade chromium ore and the method may also be used for the production of silicomanganese.Type: GrantFiled: October 26, 1983Date of Patent: December 25, 1984Assignee: Lectromelt CorporationInventor: John A. Persson
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Patent number: 4488906Abstract: A hydrogen absorbing and desorbing metal material which comprises elements belonging to the IIa-Va groups having the ability to form metal hydrides, and S at an atomic ratio of 0.004-0.04 in terms of one of the elements.Type: GrantFiled: October 14, 1983Date of Patent: December 18, 1984Assignee: Nippon Steel CorporationInventors: Hisashi Gondo, Ryutaro Matsumoto, Jiro Ohno, Ryoichi Suzuki
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Patent number: 4487743Abstract: In an age hardenable controlled expansion alloy essentially devoid of chromium, the combination of short term tensile properties and elevated temperature properties, particularly notch rupture strength, are improved by the inclusion therein of silicon in an amount leass than 1%.Type: GrantFiled: August 20, 1982Date of Patent: December 11, 1984Assignee: Huntington Alloys, Inc.Inventors: John S. Smith, Darrell F. Smith, Jr.
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Patent number: 4481045Abstract: The disclosed permanent magnet consists of an iron-palladium alloy consisting of 25 to 40 atomic % of palladium, and the remainder of iron with less than 0.5 atomic % of impurities or an iron-palladium-silver alloy consisting of 19.5 atomic % of palladium, 0.1 to 27.5 atomic % of silver and the remainder of iron with less than 0.5 atomic % of impurities and having a crystalline structure with fine dispersion of .alpha.+.gamma..sub.1 phase in a matrix, so that the permanent magnet has a coercive force of higher than 500 Oe, a residual magnetic flux density of larger than 6 kG, and a maximum energy product of larger than 2 MG.Oe. The disclosed method of producing the aforementioned permanent magnet comprises steps of homogenizing solid solution treatment at a temperature depending on the specific alloy composition, cooling, and tempering at a suitable temperature so as to generate the aforementioned crystalline structure.Type: GrantFiled: April 11, 1983Date of Patent: November 6, 1984Assignee: The Foundation: The Research Institute of Electric and Magnetic AlloysInventor: Kiyoshi Watanabe
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Patent number: 4465526Abstract: The disclosed permanent magnet consists of an iron-palladium alloy consisting of 25 to 40 atomic % of palladium, and the remainder of iron with less than 0.5 atomic % of impurities or an iron-palladium-silver alloy consisting of 19.5 atomic % of palladium, 0.1 to 27.5 atomic % of silver and the remainder of iron with less than 0.5 atomic % of impurities and having a crystalline structure with fine dispersion of .alpha.+.gamma..sub.1 phase in a matrix, so that the permanent magnet has a coercive force of higher than 500 Oe, a residual magnetic flux density of larger than 6 kG, and a maximum energy product of larger than 2 MG.Oe. The disclosed method of producing the aforementioned permanent magnet comprises steps of homogenizing solid solution treatment at a temperature depending on the specific alloy composition, cooling, and tempering at a suitable temperature so as to generate the aforementioned crystalline structure.Type: GrantFiled: September 23, 1982Date of Patent: August 14, 1984Assignee: The Foundation: The Research Institute of Electric and Magnetic AlloysInventor: Kiyoshi Watanabe
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Patent number: 4464208Abstract: Disclosed is an amorphous alloy for a magnetic head, which is of the formula:(Co.sub.1-a-b-c Fe.sub.a Ru.sub.b TM.sub.c).sub.100-x-y Si.sub.x B.sub.ywherein TM is at least one of Ti, V, Cr, Mn, Ni, Zr, Nb, Mo, Hf, Ta and W, and, in atomic concentrations, 0.02.ltoreq.a.ltoreq.0.08, 0.07.ltoreq.b.ltoreq.0.2, c=0 or 0.01.ltoreq.c.ltoreq.0.1, 0.ltoreq.x.ltoreq.20 and 4.ltoreq.y.ltoreq.9, which is excellent in abrasion-resistance and simultaneously has high permeability.Type: GrantFiled: December 30, 1982Date of Patent: August 7, 1984Assignee: Tokyo Shibaura Denki Kabushiki KaishaInventor: Hiroshi Tateishi
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Patent number: 4457891Abstract: A hydrogen storage material is described which comprises an alloy of the composition of 25 to 30.9% by weight of Ti, about 10 to about 42% by weight of V and about 27.1 to about 65.1% by weight of Mn. The proviso is that more than 2 up to at most 2.2 atoms are present per titanium atom. Up to about 40%, preferably about 10 to about 40%, of the vanadium atoms can be replaced by iron atoms and up to about 10%, preferably about 3 to about 10%, can be replaced by aluminum atoms, but not more than about 40% of the vanadium atoms in total are replaced. Moreover, in place of titanium, a mixture can be used in which up to about 20% of the titanium fraction are replaced by Ca, Y, La, misch metal, or mixtures thereof. Up to about 0.2 atom of Cr per the titanium atom, up to about 0.1 atom of Ni per titanium atom and up to about 0.05 atom of Cu per titanium atom can also be present, but not more than about 0.1 atom of Ni plus Cu, these atoms replacing the same number of vanadium atoms.Type: GrantFiled: March 14, 1983Date of Patent: July 3, 1984Assignee: Daimler-Benz AktiengesellschaftInventors: Otto Bernauer, Klaus Ziegler
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Patent number: 4446101Abstract: A storage material for hydrogen comprising an alloy with the following composition:______________________________________ Ti(V.sub.1-a-b Fe.sub.a Al.sub.b).sub.x Cr.sub.y Mn.sub.2-x-y, ______________________________________ wherein: x = greater than 1, less than 2 y = 0 to approximately 0.2 x + y = not greater than 2 a = 0 to approximately 0.25 b = 0 to approximately 0.33 a + b = not greater than approximately 0.35 (1 - a - b) .multidot. x = not less than 1 ______________________________________This storage material for hydrogen can, in the cold state, absorb a maximum of 3.2% by weight of H.sub.2 and already possesses, at low temperatures, a high reaction speed for the absorption of hydrogen. During the absorption of hydrogen, the storage material exhibits self-heating to high temperatures. Thus, in addition to its use for storing hydrogen, it is also particularly suitable for use in preheating systems for hydride-type storage units of motor vehicles.Type: GrantFiled: September 29, 1982Date of Patent: May 1, 1984Assignee: Daimler-Benz AktiengesellschaftInventors: Otto Bernauer, Klaus Ziegler
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Patent number: 4442068Abstract: A heat resistant cast iron-nickel-chromium alloy outstanding in creep fracture strength at high temperatures and resistance to thermal shock and to carburizing and containing the following components in the following proportions in terms of % by weight:C: 0.3-0.6,O<Si.ltoreq.2.0,O<Mn.ltoreq.2.0,Cr: 20-30,Ni: 30-40,W: 0.5-5.0,N: 0.04-0.15,B: 0.0002-0.004,Ti: 0.04-0.50 and0.07<Al.ltoreq.0.50the balance being substantially Fe.Type: GrantFiled: September 17, 1982Date of Patent: April 10, 1984Assignee: Kubota Ltd.Inventors: Junichi Sugitani, Teruo Yoshimoto, Makoto Takahashi
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Patent number: 4440568Abstract: A boron alloying additive for continuous casting of boron steel having the desired hardenability without tundish nozzle blockage. The additive comprises 0.25-3.0% boron, 2.5-40% rare earth metals (RE), 6-60% titanium, and the balance iron. The additive may also contain silicon, calcium, manganese, and zirconium. In the additive the weight ratios of Ti to B and (Ti+RE) to B are 20:1-60:1 and 30:1-90:1, respectively.Type: GrantFiled: June 30, 1981Date of Patent: April 3, 1984Assignee: Foote Mineral CompanyInventors: John O. Staggers, Samir K. Banerji, Michael J. Lalich
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Patent number: 4439236Abstract: Boron-containing transition metal alloys based on one or more of iron, cobalt and nickel, and containing at least two metal components, are characterized by being composed of ultrafine grains of a primary solid-solution phase randomly interspersed with particles of complex borides which are predominantly located at the junctions of at least three grains of the primary solid-solution phase. These alloys are obtained by devitrification of the solid, amorphous state under specific heat-treatment conditions. These alloys can be consolidated into three-dimensional bodies.Type: GrantFiled: April 26, 1982Date of Patent: March 27, 1984Assignee: Allied CorporationInventor: Ranjan Ray
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Patent number: 4412982Abstract: A quaternary alloy consisting of zirconium, titanium, manganese and iron is characterized in having C14 hexagonal crystal structure and ZrMn.sub.2 stoichiometry. Members of a preferred class of compounds, represented by the empirical formula Zr.sub.1-x Ti.sub.x Mn.sub.2-y Fe.sub.y wherein "x" has a value between 0.05 and 0.3 and "y" has a value between 0.1 and 1, are particularly suitable for use as hydrogen storage materials.Type: GrantFiled: April 30, 1982Date of Patent: November 1, 1983Assignee: Koppers Company, Inc.Inventors: William E. Wallace, Vijay K. Sinha, Faiz Purarian
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Patent number: 4410604Abstract: An economical brazing alloy composition includes high amounts of iron. A brazed assembly includes iron-based brazing alloys.Type: GrantFiled: November 16, 1981Date of Patent: October 18, 1983Assignee: The Garrett CorporationInventors: Matthew J. Pohlman, Lynn E. Kindlimann
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Patent number: 4409043Abstract: An amorphous alloy of iron, boron, lanthanum, and a lanthanide wherein lanthanum and the lanthanide comprise up to 15 atomic percent of the alloy is obtained by rapidly quenching the molten alloy. The amorphous alloy is useful as a soft magnetic alloy.Type: GrantFiled: October 23, 1981Date of Patent: October 11, 1983Assignee: The United States of America as represented by the Secretary of the NavyInventor: Norman C. Koon
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Patent number: 4409181Abstract: A composition is provided consisting essentially of from about 50% to about 99% by weight of a silver-copper based brazing alloy and as an additive, from about 1% to about 50% to the composition, of a metal or metal alloy having essentially the same density as the brazing alloy and being essentially insoluble in the brazing alloy. The additives are selected from (a) molybdenum, (b) mixtures of molybdenum and at least one metal selected from the group consisting of cobalt, iron and tungsten and (c) mixtures of tungsen and at least one metal selected from iron and cobalt.Type: GrantFiled: August 24, 1981Date of Patent: October 11, 1983Assignee: GTE Products CorporationInventor: Brian C. Coad
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Patent number: 4405368Abstract: New iron base alloys containing aluminum and boron are disclosed. The alloys are subjected to a rapid solidification processing (RSP) technique which produces cooling rates between .about.10.sup.5 to 10.sup.7 .degree. C./sec. The as-quenched ribbon or powder, etc consists primarily of a metastable crystalline solid solution phase. The metastable crystalline phases are subjected to suitable heat treatments so as to produce a transformation to a stable multiphase microstructure which includes borides. The heat treated alloy exhibits superior mechanical properties with good corrosion and oxidation resistance.Type: GrantFiled: May 7, 1981Date of Patent: September 20, 1983Assignee: Marko Materials, Inc.Inventors: Ranjan Ray, Viswanathan Panchanathan, Bill C. Giessen
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Patent number: 4400348Abstract: An alloy of the composition represented by the formula, Mm.sub.1-x Ca.sub.x Ni.sub.5-y A.sub.y, wherein Mm stands for Mischmetal, A for one member selected from the group consisting of Al, Co, Cr, Fe, Mn, Si and Zn, x for a number within the range of 0.01 to 0.99 and y for a number within the range of 0.05 to 3 is useful for storage of hydrogen.Type: GrantFiled: January 5, 1981Date of Patent: August 23, 1983Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Yasuaki Osumi, Hiroshi Suzuki, Akihiko Kato, Keisuke Oguro, Masanori Nakane
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Patent number: 4396576Abstract: An alloy having a composition of the general formula, MmNi.sub.5-x A.sub.x-y B.sub.y, wherein Mm is misch metal, A is one member selected from the group consisting of Al, Cu, and Mn and B is one member selected from the group consisting of Al, Co, Cu, Fe, Mn, and Si, providing that both A and B do not represent one same compound, is useful for the occlusion of hydrogen.Type: GrantFiled: June 24, 1981Date of Patent: August 2, 1983Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & IndustryInventors: Yasuaki Osumi, Hiroshi Suzuki, Akihiko Kato, Keisuke Oguro, Masanori Nakane
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Patent number: 4379720Abstract: Nickel-aluminum alloys containing boron in powder form are disclosed. These alloys are subjected to melt-spinning to form a brittle filament consisting in large measure of a metastable solid solution phase. This is then pulverized to powder configuration. Such powders exhibit excellent sprayability to form a dense, homogeneous, hard coating on a metallic substrate. The alloys, also exhibit excellent resistance to high temperature oxidation.Type: GrantFiled: March 15, 1982Date of Patent: April 12, 1983Assignee: Marko Materials, Inc.Inventors: Ranjan Ray, Viswanathan Panchanathan
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Patent number: 4377411Abstract: An inoculating alloy for addition to molten cast iron is disclosed. The composition is a silicon ferro alloy containing five to eight percent calcium as its active ingredient.Type: GrantFiled: September 8, 1981Date of Patent: March 22, 1983Inventor: William H. Moore
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Patent number: 4358316Abstract: An alloy capable of reversible sorption of hydrogen having the formula Fe.sub.1-x Mn.sub.x Ti.sub.1-y V.sub.y, where x is within the range from 0 to 0.2 and y is within the range of from 0.005 to 0.08.Type: GrantFiled: December 29, 1980Date of Patent: November 9, 1982Assignee: University Patents, Inc.Inventors: James Liu, Charles E. Lundin, deceased
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Patent number: 4353865Abstract: This invention relates to special ferromanganese type master-alloys, such as normally are added to steels during the process of melting and/or deoxidation, except that in the new master-alloy substantial amounts of zirconium and boron are added to make the new material especially suitable as an addition for boron in various boron-containing steels.A typical aim composition for the new Fe-Mn-Zr-B master-alloy would be about 20% Fe, about 40% Mn, about 35% Zr, about 2.5% B, about 2.0% C, and the balance residual elements with preferably not more than about 0.5% Al. It can be noted that the ratio of the Zr to the B contents is about 14:1. This means that for a steel addition of 0.0025% B, an amount of 0.035% Zr would be available in the steel to enhance the hardenability contribution of the B to the steel and to prevent "fading" of the boron during the heating operations.Type: GrantFiled: April 24, 1981Date of Patent: October 12, 1982Inventor: Alex E. Petrus
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Patent number: 4334924Abstract: Molten molybdenum-(copper)-iron-sulfur mattes or alloys, obtained for example, by reacting slags or other molybdenum containing oxide residues or waste materials with an iron and/or sulfide reductant, are enriched in molybdenum and copper (if present) by a pyrometallurgical process. The molten matte or alloy material is oxidized to remove sulfur, as sulfur oxides, while varying amounts of iron are converted to iron oxides which separate from the metallics. The oxidation thus enriches the molybdenum and copper content of the remaining alloy. Silica flux may be added during the reaction process to form a fluid slag with the iron oxide which separates from the remaining molybdenum-iron-(copper) material which constitutes the product.Type: GrantFiled: December 15, 1980Date of Patent: June 15, 1982Assignee: Kennecott CorporationInventors: Jonathan J. Kim, Paul R. Ammann