Amorphous, I.e., Glassy Patents (Class 148/403)
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Patent number: 5032196Abstract: Disclosed is an amorphous alloy having superior processability which has a composition represented by the general formula:X.sub.a M.sub.b Al.sub.cwhereinX is at least one element of Zr and Hf;M is at least one element selected from the group consisting of Ni, Cu, Fe, Co and Mn; anda, b and c are, in atomic percentages:25.ltoreq.a.ltoreq.85, 5.ltoreq.b.ltoreq.70 and 0<c.ltoreq.35, preferably 35.ltoreq.a.ltoreq.75, 15.ltoreq.b.ltoreq.55 and 5.ltoreq.c .ltoreq.20 and more preferably 55.ltoreq.a.ltoreq.70, 15.ltoreq.b .ltoreq.35 and 5.ltoreq.c.ltoreq.20,the alloy being at least 50% (by volume) composed of an amorphous phase. Since the amorphous alloy is at least 50% by volume amorphous and can be present in a supercooled liquid state in a wide temperature range, it has a greatly superior processability together with high levels of strength, thermal resistance and corrosion resistance characteristic of amorphous alloys.Type: GrantFiled: November 5, 1990Date of Patent: July 16, 1991Assignees: Tsuyoshi Masumoto, Teikoku Piston Ring Co., Ltd., Yoshida Kogyo K.K.Inventors: Tsuyoshi Masumoto, Akihisa Inoue, Hitoshi Yamaguchi, Kazuhiko Kita
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Patent number: 5032464Abstract: Smooth, specular, ductile alloys of a transition metal and phosphorus (particularly nickel phosphorus) are produced. The ductility is such that when the alloy is in the form of a foil having a thickness up to or greater than 1 mil (i.e. greater than can be obtained by splat cooling) it can be formed into a complex geometric shape, such as a helix, without cracking, and has a ductility comparable to at least about 5 percent (possibly even over 10 percent) for a 25 micron foil subjected to the ASTM Micrometer Bend Test for Ductility of Electrodeposits. The alloy is deposited on a substrate by electroplating in a bath comprising about 0.5-1.0 molar nickel, about 1.5-3.0 molar phosphorous acid, about 0.1-0.6 molar phosphoric acid, and about 0.0-0.6 molar hydrochloric acid, with chloride ion in the amount of at least 1.25M, and greater than twice as much chloride as nickel.Type: GrantFiled: October 27, 1986Date of Patent: July 16, 1991Assignee: Burlington Industries, Inc.Inventor: John A. Lichtenberger
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Patent number: 5030300Abstract: 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 portion of the set forth refractory metals being allowed to be substituted with at least one element selected from Ti and Zr.Type: GrantFiled: December 21, 1989Date of Patent: July 9, 1991Assignees: Yoshida Kogyo K.K., Koji HashimotoInventors: Koji Hashimoto, Hideaki Yoshioka, Katsuhiko Asami, Asahi Kawashima
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Patent number: 5028277Abstract: A continuous thin sheet of a TiAl intermetallic compound consisting of from 35 to 44 wt % Al and the balance Ti and unavoidable impurities, having a thickness of from 0.2 to 3 mm, and having a solidified, as-cast structure comprising columnar crystals extending from both surfaces of the sheet toward the center of the sheet thickness, and a process for producing the same by using a twin-roll type continuous casting procedure.Type: GrantFiled: February 23, 1990Date of Patent: July 2, 1991Assignee: Nippon Steel CorporationInventors: Toshiaki Mizoguchi, Kenichi Miyazawa, Toshihiro Hanamura, Naoya Masahashi
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Patent number: 5019336Abstract: Tin-based alloys that include micro-additions of certain elements avoid the discoloration that otherwise afflict those alloys when they are melted. The discoloration, which results from tin oxidation, correlates with poor performance of the alloys in filler metal applications. A preferred method of preparing the alloys of the invention is by rapid solidification from the melt.Type: GrantFiled: January 11, 1990Date of Patent: May 28, 1991Assignee: Allied-Signal Inc.Inventors: Howard H. Liebermann, Tedd P. Hardman
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Patent number: 5015308Abstract: The present invention provides a corrosion-resistant and heat-resistant aluminum-based alloy thin film consisting of a composite having a composition represented by the general formula, Al.sub.a Ni.sub.b X.sub.c N.sub.d, wherein: X is a metal element selected from Y and Zr and a, b, c and d are as follows, in atomic percentages: 70.ltoreq.a.ltoreq.93, 0.5.ltoreq.b.ltoreq.7.5, 0.5.ltoreq.c.ltoreq.12 and 1.ltoreq.d.ltoreq.18, the composite being at least 50% (by volume) composed of an amorphous phase. The thin films are produced by depositing a material having the composition represented by the above-defined general formula onto a substrate by a thin film formation technique, such as sputtering, vacuum deposition or ion plating. In the production process, only nitrogen may be supplied as gas. The novel aluminum-based alloy thin film has superior corrosion-resistance and heat-resistance together with high levels of hardness and wear resistance.Type: GrantFiled: July 11, 1989Date of Patent: May 14, 1991Assignees: Tsuyoshi Masumoto, Yoshida Kogyo K.K.Inventor: Hiroshi Yamagata
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Patent number: 5011553Abstract: A magnetic metallic glass alloy exhibits, in combination, high saturation induction and high Curie temperature. The alloy has a composition described by the formula Fe.sub.a Co.sub.b Ni.sub.c B.sub.d Si.sub.e C.sub.f, where "a"- "f" are in atom percent, "a" ranges from about 75 to about 81, "b" ranges from 0 to about 6, "c" ranges from about 2 to about 6, "d" ranges from about 11 to about 16, "e" ranges from 0 to about 4, and "f" ranges from 0 to about 4, with the provisos that (i) the sum of "b" and "c" may not be greater than about 8, (ii) "d" may not be greater than about 14 when "b" is zero, (iii) "e" may be zero only when "b" is greater than zero, and (iv) "f" is zero when "e" is zero. This alloy is suitable for use in large magnetic cores used in various applications requiring high magnetization rates, and in the cores of line frequency power distribution transformers, airborne transformers, current transsformers, ground fault interrupters, switch-mode power supplies, and the like.Type: GrantFiled: July 14, 1989Date of Patent: April 30, 1991Assignee: Allied-Signal, Inc.Inventor: V. R. V. Ramanan
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Patent number: 4997622Abstract: Magnesium alloy having a breaking load of at least 290 MPa, more particularly at least 330 MPa, having the following composition by weight: Al 2-11%, Zn 0-12%, Mn 0-0.6%, Ca 0-7%, but with the presence of at least Zn and/or Ca, having a mean particle size less than 3 .mu.m, a homogeneous matrix reinforced with intermetallic compounds having a size less than 1 .mu.m precipitated at the grain boundaries, this structure remaining unchanged after storage at 200.degree. C. for 24 hours; and a process for producing it by rapid solidification and consolidation by extrusion at a temperature between 200.degree. and 350.degree. C.Type: GrantFiled: October 25, 1989Date of Patent: March 5, 1991Assignees: Pechiney Electrometallurgie, Norsk Hydro A.S.Inventors: Gilles Regazzoni, Gilles Nussbaum, Haavard T. Gjestland
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Patent number: 4995923Abstract: A thin film of an amorphous alloy comprising (i) at least one element selected from Fe and Co, (ii) at least one element selected from Pt and Pd and (iii) at least one element selected from (a) 3d transition elements other than Fe and Co, (b) 4d transition elements other than Pd, (c) 5d transition elements other than Pt, (d) light rare earth elements, (e) Group III B elements, (f) Group IV B elements, (g) Group V B elements, and (h) Group VI B elements, and the film having an easy axis of magnetization perpendicular to the film face. The thin film has excellent magnetooptical characteristics including increased coercive force and large Kerr-rotation angle and Faraday-rotation angle, and is excellent in resistance to oxidation and in consequence the coercive force and Kerr-angle of the film do not substantially change with time. The film has a high reflectance as well.Type: GrantFiled: October 17, 1988Date of Patent: February 26, 1991Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kunihiko Mizumoto, Koichi Haruta, Hirokazu Kajiura
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Patent number: 4992329Abstract: A magnetic-shielding sheet comprising a laminated-structure layer of soft magnetic amorphous alloy flakes, said soft magnetic amorphous alloy flakes being of 5 to 100 .mu.m thick and 10-15000 in aspect ratio (ratio of maximum length to maximum thickness) is provided.Type: GrantFiled: March 24, 1989Date of Patent: February 12, 1991Assignee: Kabushikikaisha Riken & Simizu Construction Co.Inventors: Hiroyoshi Ishii, Kenzo Suzuki, Misao Kaneko, Noboru Ishikawa
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Patent number: 4990198Abstract: The present invention provides high strength magnesium-based alloys which are at least 50% by volume composed of an amorphous phase, the alloys having a composition represented by the general formula (I) Mg.sub.a X.sub.b ; (II) Mg.sub.a X.sub.c M.sub.d, (III) Mg.sub.a X.sub.c Ln.sub.e ; or (IV) Mg.sub.a X.sub.c M.sub.d Ln.sub.e (wherein X is elements selected from the group consisting of Cu, Ni, Sn and Zn; M is one or more elements selected from the group consisting of Al, Si and Ca; Ln is one or more elements selected from the group consisting of Y, La, Ce, Nd and Sm or a misch metal rare earth elements; and a, b, c, d and e are atomic percentages falling within the following ranges: 40.ltoreq.a.ltoreq.90; 10.ltoreq.b.ltoreq.60, 4.ltoreq.c.ltoreq.35, 2.ltoreq.d.ltoreq.25, and 4.ltoreq.e.ltoreq.25. Since the magnesium-based alloys have high hardness, high strength and high corrosion-resistance, they are very useful in various applications.Type: GrantFiled: August 28, 1989Date of Patent: February 5, 1991Assignee: Yoshida Kogyo K. K.Inventors: Tsuyoshi Masumoto, Akihisa Inoue, Katsumasa Odera
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Patent number: 4974768Abstract: A soldering iron tip comprises a coating layer of amorphous metal satisfactory in wettability in molten solder formed on the leading end part thereof. A soldering iron tip may comprise a coating layer of amorphous metal low in wettability in molten solder formed on at least the leading end part thereof and a coating layer of material excellent in wettability in molten solder formed on the coating layer of amorphous metal on the leading end part.Type: GrantFiled: April 16, 1990Date of Patent: December 4, 1990Assignee: Mitsui Engineering & Shipbuilding Co., Ltd.Inventor: Makoto Ebata
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Patent number: 4972285Abstract: An amorphous magnetic alloy of Co-Nb-Zr system contains Co, Nb and Zr and has a composition which falls, in terms of atomic percent, within the region defined by straight lines connecting, in a ternary composition diagram assuming the total of contents of these three elements to be 100, a point (81% Co, 14% Nb, 5 Zr), a point (88% Co, 9% Nb, 3% Zr), a point (86.5% Co, 12.5% Nb, 1% Zr) and a point (81% Co, 18% Nb, 1% Zr). Disclosed also is a magnetic head having a core at least a part of which is constituted by this amorphous magnetic alloy. This magnetic head, when used in combination with a metal powder tape having a high coercive force, provides a remarkably increased recording-reproducing output.Type: GrantFiled: July 12, 1988Date of Patent: November 20, 1990Assignee: Hitachi, Ltd.Inventors: Shigekazu Otomo, Noriyuki Kumasaka, Hideo Fujiwara, Shinji Takayama, Takeo Yamashita, Noritoshi Saito, Mitsuhiro Kudo
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Patent number: 4968363Abstract: A highly corrosion-resistant amorphous alloy composed of ni-- 15-80 atomic % Ta Ni-- 30-80 atomic % Ta, or Ni-- 20-50 atomic % Ta-- 10-23 atomic % P, with a specific amount of optional elements of Ti, Zr, Nb, W, Fe, Co, Cr, P, B, Si, or C.Type: GrantFiled: November 22, 1988Date of Patent: November 6, 1990Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., Koji HashimotoInventors: Koji Hashimoto, Kazuo Shimamura, Asahi Kawashima, Katsuhiko Asami
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Patent number: 4964927Abstract: Ductile, strong, and stable (crystallization temperature above 250.degree. C.) Al-X-Z metallic classes contain 90 at. % Al where X-Fe, Co, Ni, Rh; Z-rare earths, Hf, Y, Stable (crystallization temperatures reaching 500.degree. C.) Al-Y-Fe-Si glasses have superior hardness properties upon consolidation. The present alloys are at least twice as strong in tensile strength as the strongest commercial aluminum alloys.Type: GrantFiled: March 31, 1989Date of Patent: October 23, 1990Assignee: University of Virginia Alumini PatentsInventors: Gary J. Shiflet, S. Joseph Poon, Yi He
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Patent number: 4965139Abstract: Corrosive-resistant, amorphous metal alloy coatings for crystalline metal surfaces wherein the coating is formed by vapor deposition of a mixture of(1) from 8 to 30 atomic percent of boron, silicon, or mixtures thereof and(2) the remainder being a modified metal composition formed by modifying the composition of the crystalline metal of the surface to produce a final amorphous metal alloy coating that is anodic in reference to the crystalline metal of the surface.Type: GrantFiled: March 1, 1990Date of Patent: October 23, 1990Assignee: The United States of America as represented by the Secretary of the NavyInventors: Lawrence T. Kabacoff, William Ferrando
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Patent number: 4952144Abstract: An apparatus for forming ceramic or metal powders has a plasma generator, a source of material in the form of powder particles and a projection torch for passing the material through the plasma to melt the powder particles and then projecting a stream of plasma and material via an outlet. A container is provided for containing the projected stream. A plurality of spray diffusers are arranged to diffuse a spray of cryogenic liquid into a space through which the projected stream travels, whereby the projected stream is quenched. A console controls the flow rates of the powder particles and the plasma into the projection torch.Type: GrantFiled: February 2, 1989Date of Patent: August 28, 1990Assignee: Commissariat a l'Energie AtomiqueInventors: Bernard Hansz, Michel Houdayer
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Patent number: 4948029Abstract: Two bodies are provided with mutually different metal layers. The combination of wringing in contact of the metal surfaces and low-temperature interdiffusion provides a strong bond between the two bodies.Type: GrantFiled: June 19, 1989Date of Patent: August 14, 1990Assignee: U.S. Philips CorporationInventors: Jan Haisma, Andries R. Miedema
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Patent number: 4938267Abstract: A series of glassy metal alloys with near zero magnetostriction and Perminvar characteristics of relatively constant permeability at low magnetic field excitations and constricted hysteresis loops is disclosed. The glassy alloys have the compositions Co.sub.a Fe.sub.b Ni.sub.c M.sub.d B.sub.e Si.sub.f where M is at least one member selected from the group consisting of Cr, Mo, Mn and Nb, and "a-f" are in atom percent where "a" ranges from about 66 to 71, "b" ranges from about 2.5 to 4.5, "c" ranges from about 0 to 3, "d" ranges from about 0 to 2 except when M.dbd.Mn in which case "d" ranges from about 0 to 4, "e" ranges from about 6 to 24 and "f" ranges from about 0 to 19, with the proviso that the sum of "a", "b" and "c" ranges from about 72 to 76 and the sum of "e" and "f" ranges from about 25 to 27. The glassy alloy has a value of magnetostriction ranging from about -1.times.10.sup. -6 to about +1.times.10.sup.-6, a saturation induction ranging from about 0.Type: GrantFiled: August 18, 1988Date of Patent: July 3, 1990Assignee: Allied-Signal Inc.Inventor: Ryusuke Hasegawa
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Patent number: 4936929Abstract: A soft magnetic amorphous ternary alloy of Co-Ta-Hf which comprises a composition represented by Co.sub.x Ta.sub.y Hf.sub.z, wherein the composition ratio of x, y and z ranges, in atomic %,81%.ltoreq.x.ltoreq.85%8%.ltoreq.y.ltoreq.13%5%.ltoreq.z.ltoreq.10%1.ltoreq.y/z.ltoreq.2.5and x+y+z=100%. Thus, the refractory amorphous alloy has excellent thermal stability, preferable soft magnetic property, high mass productivity, and can be heat treated at 500.degree. C. or higher.Type: GrantFiled: February 7, 1989Date of Patent: June 26, 1990Assignee: Alps Electric Co., Ltd.Inventors: Mikio Nakashima, Akinori Kojima, Akihiro Makino
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Patent number: 4915980Abstract: A method metallurgically bonds a thin film of easily amorphized material on a metallic substrate having a large thermal conductivity, and then irradiates all or selected portions of the thin film with a pulse laser. The irradiated portions become amorphous by rapidly heating and cooling. Therefore, a whole surface which is an amorphous layer or a part of a surface which is an amorphous layer is obtained. In the latter, a porous amorphous metal layer is obtained by subsequent acid elution and by removing the non-amorphous part.Type: GrantFiled: July 12, 1989Date of Patent: April 10, 1990Assignee: Kuroki Kogyosho Co., Ltd.Inventors: Akira Matsunawa, Seiji Katayama, Takanori Kuroki
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Patent number: 4911767Abstract: The present invention provides high corrosion-resistant aluminum-based alloys having a composition represented by the general formula Al.sub.x M.sub.y (wherein: M is one metal element selected from the group consisting of Y, La, Ce, Nd and Sm; and x and y range from 75 to 98 atomic percent and from 2 to 25 atomic percent, respectively), the aluminum-based alloy containing at least 50% by volume of amorphous phase. The aluminum-based alloys are especially useful as high corrosion-resistant, high strength, high heat-resistant materials in various applications and, since they exhibit superplasticity in the vicinity of their crystallization temperature, they can be processed into various bulk materials, for example, by extrusion, press working or hot-forging at the temperatures within the range of the crystallization temperature .+-.100.degree. C.Type: GrantFiled: March 16, 1989Date of Patent: March 27, 1990Assignee: Yoshida Kogyo K. K.Inventors: Tsuyoshi Masumoto, Akihisa Inoue, Katsumasa Odera
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Patent number: 4909867Abstract: The present invention provides high-strength and heat resistant aluminum alloys having a composition represented by the general formula Al.sub.a M.sub.b La.sub.c (wherein M is at least one metal element selected from the group consisting of Fe, Co, Ni, Cu, Mn and Mo; and a, b and c are atomic percentages falling within the following ranges:65.ltoreq.a.ltoreq.93, 4.ltoreq.b.ltoreq.25 and 3.ltoreq.c.ltoreq.15),the aluminum alloys containing at least 50% by volume of amorphous phase. The aluminum alloys are especially useful as high strength and high heat resistant materials in various applications and, since the aluminum alloys specified above exhibit a superplasticity in the vicinity of their crystallization temperature, they can be readily worked into bulk forms by extrusion, press working or hot forging in the vicinity of the crystallization temperature.Type: GrantFiled: September 12, 1988Date of Patent: March 20, 1990Assignees: Yoshida Kogyo K. K., Tsuyoshi MasumotoInventors: Tsuyoshi Masumoto, Akihisa Inoue, Katsumasa Odera, Masahiro Oguchi
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Patent number: 4908182Abstract: Tungsten-rich alloys of formula W.sub.100-P M.sub.X RE.sub.Y ME.sub.Z wherein W is tungsten, M is one or more elements selected from the group consisting of transition elements, RE is an element selected from the group consisting of rare earth and actinide elements, ME is silicon, boron, germanium or aluminum, X is 0 to 25 weight %, Y is 0 to 2 weight %, Z is 0.1 to 3 weight % and P=X+Y+Z where P.ltoreq.26 weight % are disclosed. The alloys possess high strength and ductility. A method for preparing the alloys by rapid solidification processing is also disclosed.Type: GrantFiled: April 11, 1988Date of Patent: March 13, 1990Assignee: Polytechnic UniversityInventor: Sung H. Whang
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Patent number: 4906306Abstract: A composite article comprising a metal and an amorphous metal bonded thereto by the explosion, being free from residual stress and compression stress in the amorphous metal portion, and having excellent magnetic properties inherent to the amorphous metal can be obtained by heating a composite article produced by bonding an amorphous metal to a metal through the explosion pressure to remove the residual stress caused in the amorphous metal during the explosion bonding, and then subjecting the heat treated composite article to a plastic working so as to give a tensile stress in the amorphous metal in an amount sufficient to offset the compression stress caused in the amorphous metal due to the heat treatment.Type: GrantFiled: June 21, 1988Date of Patent: March 6, 1990Assignees: Nippon Oil and Fats Co., Ltd., Nippon Denso Co., Ltd.Inventors: Masatada Araki, Yutaka Kuroyama, Yukihisa Takeuchi, Makoto Takagi, Yoshihito Kawamura, Toru Imura
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Patent number: 4900638Abstract: Nickel-based solder compositions having improved wetting behavior, the soldering alloys containing aluminum and chromium, and one or more of the metals zirconium, niobium, or titanium added to the solder in amounts of from 0.1 to 5 atomic percent. Particularly effective soldering alloys contain 0 to 4 atomic percent iron, 0 to 21 atomic percent chromium, 0 to 19 atomic percent boron, 0 to 12 atomic percent silicon, 0 to 22 atomic percent phosphorus, 0 to 3 atomic percent carbon, and 0.1 to 5 atomic percent niobium, zirconium, or titanium, the remainder being nickel, the boron, carbon, silicon, and phosphorus concentrations totaling from 16 to 24 atomic percent.Type: GrantFiled: March 14, 1988Date of Patent: February 13, 1990Assignee: Vacuumschmelze GmbHInventor: Kurt Emmerich
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Patent number: 4891068Abstract: The present invention provides an additive powder for coating materials or plastics, comprising a particle of a metal or glass, comprised of a particle having a thickness of 0.5 to 5 .mu.m, a minor axis/major axis of from 5 to 500 .mu.m, an aspect ratio (ratio of the major axis to the thickness) of not less than 5, and a ratio of the minor axis to the major axis, of from 1 to 10, and having the shape of a leaf as a whole. This powder can be prepared by melting a metal or glass, bringing the resulting melt to flow out from a nozzle and jetting a gas to the melt to form droplets of the melt, and bringing said droplets, before they solidify, to collide against the surface of a rotating cooling member having the shape of an cone or horn and provided in the direction of the flow of said droplets, followed by cooling to effect solidification.Type: GrantFiled: October 24, 1988Date of Patent: January 2, 1990Assignees: Teikoku Piston Ring Co., Ltd., Tsuyoshi MasumotoInventors: Tsuyoshi Masumoto, Akihisa Inoue, Masahiro Oguchi, Yoshio Harakawa
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Patent number: 4880482Abstract: A highly corrosion-resistant amorphous Cu alloys with at least one element selected from the group of Ta and Nb and other Cu-Ta alloys with at least one element selected from the group of Nb, Ti and Zr, wherein the total content of alloying elements other than Cu ranges from 15 to 85 at %.Type: GrantFiled: April 19, 1988Date of Patent: November 14, 1989Assignees: Mitsui Engineering & Shipbuilding Co., Ltd., Koji HashimotoInventors: Koji Hashimoto, Kimikado Miura, Katsuhiko Asami, Asahi Kawashima
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Patent number: 4867785Abstract: Disclosed is a controlled pressure melt spinning method of rapidly solidifying alloys to obtain a solid alloy of controlled mean crystallite size, narrow crystallite distribution, and a fine grain microstructure.Type: GrantFiled: May 9, 1988Date of Patent: September 19, 1989Assignee: Ovonic Synthetic Materials Company, Inc.Inventors: John Keem, Jun S. Im, John Tyler, Richard Bergeron, Kevin Dennis, David Hoeft
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Patent number: 4865664Abstract: An iron base amorphous alloy strip having a sheet thickness of from 50 to 150 .mu.m and a sheet width of at least 20 mm. The strip is produced by a single-roll cooling process and has a fracture strain of 0.01 or more.Type: GrantFiled: September 28, 1987Date of Patent: September 12, 1989Assignee: Nippon Steel CorporationInventors: Takashi Sato, Tsutomu Ozawa, Toshio Yamada
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Patent number: 4863810Abstract: A method of providing corrosion resistant substrates having an amorphous metallic alloy coating thereon. The method comprises depositing refractory and transition elements, such as Ni, Nb, Ti and Cr, onto the substrate to provide a crystalline metallic layer thereon which is then irradiated to convert the layer into an amorphous metallic coating on the substrate. The coated substrate displays a corrosion resistance which is at least about four orders of magnitude greater than for the uncoated substrate in both lN HNO.sub.3 and 0.1 N NaCl aqueous solutions.Type: GrantFiled: September 21, 1987Date of Patent: September 5, 1989Assignee: Universal Energy Systems, Inc.Inventors: Rabi S. Bhattacharya, Amarendra K. Rai, Peter P. Pronko, Charbel Raffoul
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Patent number: 4863794Abstract: A novel fluorocarbon polymer coating composition in which glass fibers are successfully dispersed to add enhanced scratch and wear resistances to the superior properties inherent to the fluorocarbon polymer. The glass fibers are firstly sized with a solution of a titanate coupling agent and subsequently sized with a solution of a silane coupling agent. With this composite sizing treatment, the glass fibers can have greatly improved wettability or compatibility with the fluorocarbon polymer coating composition so that they can be substantially randomly dispersed in the coating composition, whereby the fluorocarbon polymer coating can have the combined superior properties resulting from the use of the fluorocarbon polymer and the incorporation of the glass fibers.Type: GrantFiled: October 20, 1987Date of Patent: September 5, 1989Assignees: Daido Steel Sheet Corporation, Dainippon Ink & Chemicals, Inc.Inventors: Haruki Fujii, Isao Miyawaki, Motoomi Sakai, Fumio Kanazawa, Tadahiko Watanabe
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Patent number: 4859256Abstract: To obtain a high permeability magnetic core, the core is made of a 5 to 25 .mu.m thick ribbon of a Co-based amorphous alloy with a Curie temperature Tc between 120.degree. C. and 270.degree. C., and further heat treated at a temperature below Tc within a magnetic field (1 Oe or more) applied in the lateral direction of the thin ribbon. Further, the saturation magnetostriction constant of the ribbon should be -2 to 1.times.10.sup.-6.Type: GrantFiled: January 30, 1987Date of Patent: August 22, 1989Assignee: Kabushiki Kaisha ToshibaInventors: Takao Sawa, Susumu Hashimoto, Koichiro Inomata
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Patent number: 4857268Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be a highly desirable effective aluminum concentration by addition of vanadium and rapid solidification from the melt according to the approximate formula Ti.sub.49 Al.sub.48 V.sub.3.Type: GrantFiled: December 28, 1987Date of Patent: August 15, 1989Assignee: General Electric CompanyInventors: Shyh-Chin Huang, Michael F. X. Gigliotti, Jr.
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Patent number: 4857414Abstract: An amorphous metal-metal composite article comprising a metal and an amorphous metal thin sheet firmly bonded thereto and having high durability and reliability can be obtained by a method, wherein the surface roughness of a metal to be bonded with an amorphous metal thin sheet is adjusted to a certain surface roughness and an explosion shock is applied to an assembly of the metal and the amorphous metal thin sheet superposed thereon, under a condition that the moving velocity of the collision point of the amorphous metal thin sheet to the metal is higher than the sound velocity in the amorphous metal.Type: GrantFiled: April 12, 1988Date of Patent: August 15, 1989Assignee: Nippon Oil & Fats Co., Ltd.Inventors: Masatada Araki, Yutaka Kuroyama, Yukihisa Takeuchi, Makoto Takagi, Yoshihito Kawamura, Toru Imura
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Patent number: 4854980Abstract: A nickel-based glassy alloy composition including Mo and one or more of Nb, Ta, and Zr, exhibiting high hardness and high crystallization temperatures.Type: GrantFiled: December 17, 1987Date of Patent: August 8, 1989Assignee: GTE Laboratories IncorporatedInventors: Ramaswamy V. Raman, Shih C. Hsu
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Patent number: 4842657Abstract: Amorphous alloys containing zirconium as an amorphus forming metal and having the formula X.sub..alpha. Z.sub..gamma. wherein X is at least one of Fe, Co and Ni, .alpha. is 80 to 92 atomic %, Z is zirconium, .gamma. is 8 to 20 atomic % and the sum of .alpha. and .gamma. is 100 atomic %, cause very little variation of properties during aging and embrittlement because they contain no metalloid as the amorphous forming element, and they further have excellent strength, hardness, corrosion resistance and heat resistance and maintain superior magnetic properties which are characteristic of iron group elements.Type: GrantFiled: December 5, 1980Date of Patent: June 27, 1989Assignee: Shin-Gijutsu Kaihatsu JigyodanInventors: Tsuyoshi Masumoto, Kiyoyuki Esashi, Masateru Nose
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Patent number: 4839240Abstract: A multilayer photoconductive material wherein at least two kinds of alloys selected from the group consisting of amorphous silicon or germanium alloys comprising silicon and/or germanium and at least one element selected from the group consisting of carbon, fluorine and hydrogen are alternately laminated, the kinds of alloys of the adjacent layers being different from each other and the total number of the layers being at least 6, which has exhibits a high response speed and can be easily controlled in sensitivity not only to long wavelength light but also to short wavelength light.Type: GrantFiled: December 18, 1987Date of Patent: June 13, 1989Assignee: Kanegafuchi Chemical Industry Co., Ltd.Inventors: Isamu Shimizu, Minori Yamaguchi
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Patent number: 4837094Abstract: An oxygen-containing ferromagnetic amorphous alloy having the formulaM.sub.x G.sub.y O.sub.zwherein M is one or more transition elements of Fe, Co and Ni; or a combination of said transition element or elements and one or more elements selected from the group consisting of V, Cr, Mn, Nb, Mo, Hf, Ta, W, Pt, Sm, Gd, Tb, Dy and Ho; G is one or more elements selected from the group consisting of B, Si, Ge, As, Sb, Ti, Sn, Al and Zr; and x, y and z are the fractional atomic percentages of M, G and O and y+y+z=100 and this alloy in combination with a substrate.Type: GrantFiled: February 4, 1987Date of Patent: June 6, 1989Assignees: Research Development Corporation of Japan, Casio Computer Co., Ltd.Inventor: Toshio Kudo
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Patent number: 4836983Abstract: A TiAl composition is prepared to have high strength and to have improved ductility by altering the atomic ratio of the titanium and aluminum to have what has been found to be a highly desirable effective aluminum concentration by addition of silicon according to the approximate formula Ti.sub.54-57 Al.sub.39-41 Si.sub.4-5.Type: GrantFiled: December 28, 1987Date of Patent: June 6, 1989Assignee: General Electric CompanyInventors: Shyh-Chin Huang, Michael F. X. Gigliotti, Jr.
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Patent number: 4834806Abstract: A corrosion-resistant amorphous surface alloy is disclosed which is 150 .mu.m or less thick and bonded onto a substrate crystalline metal or alloy and processed by irradiation of high energy density beam, such alloy being composed of 8-19 at % Cr, 17-22 at % in the sum of P and 2-7 at % B, and the remainder being Ni, Ni--Co containing Co in an atomoic ratio of Co/Ni of 2/3 or less, or Ni--Fe or Ni--Co--Fe containing Fe in an atomic ratio of Fe/Ni or Fe/Ni+Co of 1/5 or less. Also disclosed is a process for producing such alloy.Type: GrantFiled: September 18, 1987Date of Patent: May 30, 1989Assignee: Yoshida Kogyo K. K.Inventors: Koji Hashimoto, Hideaki Yoshioka, Katsuhiko Asami, Asahi Kawashima
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Patent number: 4834816Abstract: Metallic glasses having high permeability, low coercivity, low ac core loss, low exciting power, and high thermal stability are disclosed. The metallic glasses are substantially completely glassy and consist essentially of about 58 to 81 atom percent iron, from 1 to about 10 atom percent of at least one member selected from the group consisting of nickel and cobalt, about 1 to 6 atom percent of at least one member selected from the group consisting of chromium, molybdenum, vanadium, niobium, and zirconium, about 11 to 27.5 atom percent boron about 0.5 to 8 atom percent silicon, 0 to about 2 atom percent carbon, plus incidental impurities, the total of born, silicon and carbon present ranging from about 17 to 28 atom percent. The alloy is heat treated at a temperature and for a time sufficient to achieve stress relief without inducing precipitation of discrete particles therein.Type: GrantFiled: December 4, 1987Date of Patent: May 30, 1989Assignee: Allied-Signal Inc.Inventors: Ryusuke Hasegawa, Gordon E. Fish
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Patent number: 4832737Abstract: A high temperature-resistant aluminum alloy is disclosed, comprising an aluminum matrix containing a dispersion mixture of reinforcing aluminum-iron particles with 2-16% nickel and/or cobalt, 1-6% copper and 1-3% manganese. The weight ratio of the copper to manganese is between about 2:1 and 1:1, and the intermetallic phases of the type AlCuMn, Al.sub.3 Ni and/or Al.sub.9 Co.sub.2 are present in spherical forms.Type: GrantFiled: September 18, 1986Date of Patent: May 23, 1989Assignee: Vereinigte Aluminium-Werke AktiengesellschaftInventors: Ignaz Mathy, Gunther Scharf
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Patent number: 4823113Abstract: A magnetic identification system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have both even and odd harmonics of the incident field frequency that provide the marker with signal identity, and coding capability. The marker is an elongated, ductile strip of amorphous ferromagnetic material.Type: GrantFiled: March 14, 1988Date of Patent: April 18, 1989Assignee: Allied-Signal Inc.Inventor: Ryusuke Hasegawa
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Patent number: 4810314Abstract: The present invention relates to an amorphous metal alloys of the formula:Cr.sub.a X.sub.b M.sub.cwhereinX is at least one element selected from the group consisting of Pt, Pd, Ir, Rh and Ru;M is at least one element selected from the group consisting of P, B, N, C, As, Sb and S; and wherein a ranges from about 0.60 to abotu 0.96;b ranges from greater than zero to about 0.01;c ranges from about 0.04 to about 0.40; and with the provisor that a+b+c equals 1.00.Type: GrantFiled: December 28, 1987Date of Patent: March 7, 1989Assignee: The Standard Oil CompanyInventors: Richard S. Henderson, Gary A. Shreve, Michael A. Tenhover
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Patent number: 4806179Abstract: A fine amorphous metal wire with a circular cross section that has improved toughness and a composition represented by the formula:Fe.sub.a Co.sub.b Cr.sub.c Si.sub.x Bywhereina+b is from about 53 to 80 atomic %;c is from about 3 to 20 atomic %;x is from about 5 to 15 atomic %; andy is from about 5 to 15 atomic %;provided that ##EQU1## is in a range from about c.times.0.025+0.25 to c.times.0.012+0.73; and x+y is from about 17 to 27 atomic %. Having improved toughness, this fine amorphous metal wire can be drawn or otherwise worked efficiently on an industrial scale with minimum breakage. In addition, this wire has good fatigue characteristics and high corrosion resistance, as well as high tensile breaking strengths, high heat resistance and superior electromagnetic performance. Therefore, the wire is very useful in a broad range of applications including a variety of mechanical members, industrial reinforcements, and electromagnetic materials.Type: GrantFiled: July 10, 1987Date of Patent: February 21, 1989Assignee: Unitika Ltd.Inventors: Michiaki Hagiwara, Akira Menjiu, Nomura Kohachi, Kataoka Masaru, Yamada Yoshinao, Sasaki Miyuri
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Patent number: 4802933Abstract: A nickel-palladium-based brazing alloy is disclosed having a composition consisting essentially of about 38 to about 55 atom percent palladium, about 19 to about 34.5 atom percent iron, about 11 to about 20 atom percent silicon, the balance being essentially nickel and incidential impurities. These alloys are especially suited for use as brazing filler metals in joining stainless steels and/or superalloys at temperatures above about 1000.degree. C. A process for brazing honeycomb structures formed at least in part from stainless steels and/or superalloys is also disclosed.Type: GrantFiled: April 21, 1988Date of Patent: February 7, 1989Assignee: Allied-Signal Inc.Inventor: Anatol Rabinkin
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Patent number: 4797166Abstract: An alloy, e.g. a Cr-Ti alloy, is transformed to a metastable crystal modification, e.g., by heating in an electric arc and quenching in water. The metastable crystal modification is annealed at a temperature which is below the glass temperature, e.g. at 600.degree. C. during 48 hours, causing it to vitrify completely.The inventive method provided the production of large pieces of hard and non-porous amorphous alloy with thicknesses in the centimeter range.Type: GrantFiled: May 11, 1987Date of Patent: January 10, 1989Assignee: Cendres & Metaux, S.A.Inventors: Martin Von Allmen, Andreas Blatter
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Patent number: RE32925Abstract: Novel metal alloy compositions which are obtained in the amorphous state and are superior to such previously known alloys based on the same metals are provided; these new compositions are easily quenched to the amorphous state and possess desirable physical properties. Also disclosed is a novel article of manufacture in the form of wire of these novel amorphous metal alloys and of other compositions of the same type.Type: GrantFiled: October 23, 1986Date of Patent: May 18, 1989Assignee: Allied-Signal Inc.Inventors: Ho-Sou Chen, Donald E. Polk
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Patent number: RE33022Abstract: A ferromagnetic amorphous alloy having a composition represented by (Co.sub.x Ni.sub.y Fe.sub.z).sub.a M.sub.b G.sub.c, wherein M is Cr, Mo and/or W, G is Zr, Hf and/or Ti and x,y,z and a, b, c are selected to meet the conditions of x=1-y-z, 0.ltoreq.y.ltoreq.0.2, 0.ltoreq.z.ltoreq.0.7, a=1-b-c, 0.ltoreq.b.ltoreq.0.05 and 0.05.ltoreq.c.ltoreq.0.2 This amorphous alloy has a superior magnetic characteristic and a high thermal stability.Type: GrantFiled: November 5, 1987Date of Patent: August 15, 1989Assignees: Hitachi, Ltd., Hitachi Metals, Ltd., Research Development Corp. of JapanInventors: Shinji Takayama, Yasuo Tsukuda, Kazuo Shiiki, Shigekazu Otomo, Mitsuhiro Kudo, Yasunobu Ogata, Yoshizo Sawada