Aluminum Containing Patents (Class 148/429)
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Patent number: 9219277Abstract: A hydrogen storage alloy is provided which has an extremely low Co content, and can maintain the drain (power) performance (especially pulse discharge characteristics), activity (degree of activity), and life performance at high levels. The hydrogen storage alloy is manufactured by weighing and mixing every material for the hydrogen storage alloy so as to provide an alloy composition represented by the general formula MmNiaMnbAlcCod or MmNiaMnbAlcCodFee, and controlling the manufacturing method and manufacturing conditions so that both the a-axis length and the c-axis length of the crystal lattice are in a predetermined range. Although it is sufficient if the a-axis length of the crystal lattice is 499 pm or more and the c-axis length is 405 pm or more, by further specifying the a-axis length and c-axis length depending on the values of ABx, a hydrogen storage alloy having high durability can be provided.Type: GrantFiled: February 19, 2013Date of Patent: December 22, 2015Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Daisuke Mukai, Shigeki Nakayama, Kiyotaka Yasuda, Shinya Kagei, Hidetoshi Inoue
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Patent number: 9187808Abstract: The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure including: a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure, and which comprises more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; between 0 atomic % and 5.0 atomic % inclusive of Nb; more than 0 atomic % and up to 12.5 atomic % of Ti; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.Type: GrantFiled: March 25, 2011Date of Patent: November 17, 2015Assignee: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 8920937Abstract: A protective coating system includes a nickel-aluminum-zirconium alloy coating having beta phase nickel-aluminum and at least one phase selected from gamma phase nickel and the gamma prime phase nickel-aluminum. The nickel-aluminum-zirconium alloy coating comprises 10 vol % to 60 vol % of the beta phase nickel-aluminum or 25 vol % to 75 vol % of the beta phase nickel-aluminum.Type: GrantFiled: August 5, 2007Date of Patent: December 30, 2014Assignee: United Technologies CorporationInventors: David A. Litton, Venkatarama K. Seetharaman, Michael J. Maloney, Benjamin J. Zimmerman, Brian S. Tryon
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Patent number: 8696833Abstract: An intermetallic compound having excellent mechanical properties at high temperatures is provided. An intermetallic compound of the present invention contains greater than 5 at % and not greater than 13 at % of Al, not less than 9.5 at % and less than 17.5 at % of V, not less than 0 at % and not greater than 3.5 at % of Ti, not less than 0 weight ppm and not greater than 1000 weight ppm of B, and the remaining portion consisting of Ni and inevitable impurities, and having a dual multi-phase microstructure comprising a primary L12 phase and an (L12+D022) eutectoid microstructure.Type: GrantFiled: March 24, 2006Date of Patent: April 15, 2014Assignee: Osaka Prefecture University Public CorporationInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 8535460Abstract: A hydrogen storage alloy is provided which has an extremely low Co content, and can maintain the drain (power) performance (especially pulse discharge characteristics), activity (degree of activity), and life performance at high levels. The hydrogen storage alloy is manufactured by weighing and mixing every material for the hydrogen storage alloy so as to provide an alloy composition represented by the general formula MmNiaMnbAlcCod or MmNiaMnbAlcCodFee, and controlling the manufacturing method and manufacturing conditions so that both the a-axis length and the c-axis length of the crystal lattice are in a predetermined range. Although it is sufficient if the a-axis length of the crystal lattice is 499 pm or more and the c-axis length is 405 pm or more, by further specifying the a-axis length and c-axis length depending on the values of ABx, a hydrogen storage alloy having high durability can be provided.Type: GrantFiled: August 6, 2004Date of Patent: September 17, 2013Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Daisuke Mukai, Shigeki Nakayama, Kiyotaka Yasuda, Shinya Kagei, Hidetoshi Inoue
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Publication number: 20130213532Abstract: A hydrogen storage alloy with at least two phases containing La, Ni, and Y or a heavy rare earth element, including a first phase having a composition represented by the general formula R1aR2bR3cNidR4e (wherein R1 is at least one element essentially containing La, R2 is at least one element selected from the group consisting of Y and a heavy rare earth element, R3 is Ca and/or Mg, R4 is at least one element selected from the group consisting of Co, Mn and Al, and a, b, c, d and e are numerical values that satisfy the numerical expressions a+b+c=1, 0?b?0.3, 0?c?0.4, 3.0<d+e<4.0, and 0?e?1) and a second phase having a higher concentration of Y or a heavy rare earth element than that of the first phase, and is dispersed in the first phase.Type: ApplicationFiled: February 13, 2013Publication date: August 22, 2013Applicant: GS YUASA INTERNATIONAL LTD.Inventor: GS Yuasa International Ltd.
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Publication number: 20130189149Abstract: The present invention provides an Ni-based intermetallic compound alloy having excellent hardness. The present invention provides an Ni-based dual multi-phase intermetallic compound alloy comprising Ni as a main component, and 5 to 12 atomic % of Al, 11 to 17 atomic % of V and 1 to 5 atomic % of Re, and having a dual multi-phase microstructure including a primary precipitate L12 phase and a (L12+D022) eutectoid microstructure.Type: ApplicationFiled: July 20, 2011Publication date: July 25, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 8426033Abstract: Provided are precipitation hardened high strength nickel based alloy welds that yield improved properties and performance in joining high strength metals. The advantageous weldments include two or more segments of ferrous or non-ferrous components, and fusion welds, friction stir welds, electron beam welds, laser beam welds, or a combination thereof bonding adjacent segments of the components together, wherein the welds comprise a precipitation hardened nickel based alloy weld metal composition including greater than or equal to 1.4 wt % of combined aluminum and titanium based on the total weight of the nickel based alloy weld metal composition. Also provided are methods for forming the welds from the nickel based alloy weld compositions, wherein the precipitation hardening occurs in the as-welded condition. The nickel based welds do not require a separate heat treatment step after welding to produce advantageous strength properties.Type: GrantFiled: December 16, 2008Date of Patent: April 23, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Raghavan Ayer, Neeraj Srinivas Thirumalai, Hyun-Woo Jin, Daniel B. Lillig, Douglas Paul Fairchild, Steven Jeffrey Ford
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Publication number: 20130014862Abstract: The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure including: a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure, and which comprises more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; between 0 atomic % and 5.0 atomic % inclusive of Nb; more than 0 atomic % and up to 12.5 atomic % of Ti; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.Type: ApplicationFiled: March 25, 2011Publication date: January 17, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Publication number: 20130008572Abstract: The present invention provides an Ni-base dual multi-phase intermetallic compound alloy which has a dual multi-phase microstructure comprising a primary precipitate L12 phase and an (L12+D022) eutectoid microstructure, and which comprises: more than 5 atomic % and up to 13 atomic % of Al; at least 9.5 atomic % and less than 17.5 atomic % of V; more than 0 atomic % and up to 12.5 atomic % of Nb; more than 0 atomic % and up to 12.5 atomic % of C; and a remainder comprising Ni.Type: ApplicationFiled: March 25, 2011Publication date: January 10, 2013Applicant: OSAKA PREFECTURE UNIVERSITY PUBLIC CORPORATIONInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Publication number: 20120318413Abstract: Provided is a hydrogen storage alloy which is characterized in that two or more crystal phases having different crystal structures are layered in a c-axis direction of the crystal structures. The hydrogen storage alloy is further characterized in that a difference between a maximum value and a minimum value of a lattice constant a in the crystal structures of the laminated two or more crystal phases is 0.03 ? or less.Type: ApplicationFiled: August 16, 2012Publication date: December 20, 2012Applicants: National Institute of Advanced Science and Technology, GS Yuasa CorporationInventors: Tadashi KAKEYA, Manabu KANEMOTO, Minoru KUZUHARA, Tetsuya OZAKI, Masaharu WATADA, Tetsuo SAKAI
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Patent number: 8334056Abstract: An alloy including: about 10 at % to about 30 at % of a Pt-group metal; less than about 23 at % Al; about 0.5 at % to about 2 at % of at least one reactive element selected from Hf, Y, La, Ce and Zr, and combinations thereof; a superalloy substrate constituent selected from the group consisting of Cr, Co, Mo, Ta, Re and combinations thereof; and Ni; wherein the Pt-group metal, Al, the reactive element and the superalloy substrate constituent are present in the alloy in a concentration to the extent that the alloy has a solely ??-Ni3Al phase constitution.Type: GrantFiled: September 2, 2011Date of Patent: December 18, 2012Assignee: Iowa State University Research Foundation, Inc.Inventors: Brian M. Gleeson, Daniel J. Sordelet, Wen Wang
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Patent number: 8277582Abstract: The present invention provides a hydrogen absorbing alloy containing a phase of a Pr5Co19 type crystal structure having a composition defined by a general formula A(4?w)B(1+w)C19 (A denotes one or more element(s) selected from rare earth elements including Y (yttrium); B denotes an Mg element; C denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; and w denotes a numeral in a range from ?0.1 to 0.8) and having a composition as a whole defined by a general formula R1xR2yR3z (15.8?x?17.8, 3.4?y?5.0, 78.8?z?79.6, and x+y+z=100; R1 denotes one or more element(s) selected from rare earth elements including Y (yttrium); R2 denotes an Mg element, R3 denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; the numeral of Mn+Al in the z is 0.5 or higher; and the numeral of Al in the z is 4.1 or lower).Type: GrantFiled: April 19, 2011Date of Patent: October 2, 2012Assignees: GS Yuasa International Ltd., National Institute of Advanced Industrial Science and TechnologyInventors: Manabu Kanemoto, Tadashi Kakeya, Minoru Kuzuhara, Masaharu Watada, Tetsuo Sakai, Tetsuya Ozaki
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Patent number: 8197618Abstract: An Ni3Al-based intermetallic compound of the present invention comprises greater than 5 at % and not greater than 13 at % of Al, not less than 9.5 at % and less than 17.5 at % of V, not less than 0 at % and not greater than 5 at % of Nb, not less than 50 weight ppm and not greater than 1000 weight ppm of B, and the remaining portion consisting of Ni and inevitable impurities, and has a dual multi-phase microstructure comprising a primary L12 phase and an (L12+D022) eutectoid microstructure.Type: GrantFiled: November 21, 2006Date of Patent: June 12, 2012Assignee: Osaka Prefecture University Public CorporationInventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 8147624Abstract: The present invention relates to an electrode composed of an Al-M-Cu based alloy, to a process for preparing the Al-M-Cu based alloy, to an electrolytic cell comprising the electrode the use of an Al-M-Cu based alloy as an anode and to a method for extracting a reactive metal from a reactive metal-containing source using an Al-M-Cu based alloy as an anode.Type: GrantFiled: June 13, 2006Date of Patent: April 3, 2012Assignee: University of LeedsInventors: Animesh Jha, Xiaobing Yang
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Publication number: 20110192506Abstract: The present invention provides a hydrogen absorbing alloy containing a phase of a Pr5Co19 type crystal structure having a composition defined by a general formula A(4-w)B(1+w)C19 (A denotes one or more element(s) selected from rare earth elements including Y (yttrium); B denotes an Mg element; C denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; and w denotes a numeral in a range from ?0.1 to 0.8) and having a composition as a whole defined by a general formula R1xR2yR3z (15.8?x?17.8, 3.4?y?5.0, 78.8?z?79.6, and x+y+z=100; R1 denotes one or more element(s) selected from rare earth elements including Y (yttrium); R2 denotes an Mg element, R3 denotes one or more element(s) selected from a group consisting of Ni, Co, Mn, and Al; the numeral of Mn+Al in the z is 0.5 or higher; and the numeral of Al in the z is 4.1 or lower).Type: ApplicationFiled: April 19, 2011Publication date: August 11, 2011Applicants: GS YUASA INTERNATIONAL LTD, National Institute of Advanced Industrial Science and TechnologyInventors: Manabu KANEMOTO, Tadashi Kakeya, Minoru Kuzuhara, Masaharu Watada, Tetsuo Sakai, Tetsuya Ozaki
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Publication number: 20100059145Abstract: The invention relates to a metal foil having (in weight %) Ni 74-90%, W 10-26%, and Al and/or Mg and/or B contents of Al >0-max. 0.02%, Mg >0-max. 0.025%, B>0-max. 0.005%.Type: ApplicationFiled: April 14, 2008Publication date: March 11, 2010Applicants: THYSSENKRUPP VDM GMBH, ZENERGY POWER GMBHInventors: Heike Hattendorf, Bodo Gehrmann, Michael Baecker, Joerg Eickemeyer
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Publication number: 20090308507Abstract: The present invention is characterized in including Al: more than 5 at % to 13 at % or less; V: 3 at % or more to 9.5 at % or less; and Ti: 0 at % or more to 3.5 at % or less, with the remainder being Ni and unavoidable impurities, and having a multi-phase microstructure including a primary L12 phase and an (L12 phase+D022 phase and/or D024 and/or D0a phase) eutectoid microstructure.Type: ApplicationFiled: September 26, 2007Publication date: December 17, 2009Inventors: Kazuyoshi Chikugo, Takayuki Takasugi, Yasuyuki Kaneno
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Publication number: 20090120543Abstract: An Ni3Al-based intermetallic compound of the present invention comprises greater than 5 at % and not greater than 13 at % of Al, not less than 9.5 at % and less than 17.5 at % of V, not less than 0 at % and not greater than 5 at % of Nb, not less than 50 weight ppm and not greater than 1000 weight ppm of B, and the remaining portion consisting of Ni and inevitable impurities, and has a dual multi-phase microstructure comprising a primary L12 phase and an (L12+D022) eutectoid microstructure.Type: ApplicationFiled: November 21, 2006Publication date: May 14, 2009Inventors: Takayuki Takasugi, Yasuyuki Kaneno
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Patent number: 7316753Abstract: High-strength, low-hysteresis TiNi-based shape-memory alloys (SMAS) employing fully coherent low-misfit nanoscale precipitates, wherein the precipitate phase is based on an optimized composition for high parent-phase strength and martensite phase stability, and compensating the stored elastic energy through the addition of martensite stabilizers. The alloys, with a yield strength in excess of 1200 MPa, are useful for applications such as self-expanding stents, automotive actuators, and other applications wherein SMAs with high output force and long cyclic life are desired.Type: GrantFiled: March 25, 2004Date of Patent: January 8, 2008Assignee: QuesTek Innovations LLCInventors: Jin-Won Jung, Gregory B. Olson
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Patent number: 7273662Abstract: An alloy including a Pt-group metal, Ni and Al in relative concentration to provide a ?-Ni+??-Ni3Al phase constitution, and a coating including the alloy.Type: GrantFiled: May 16, 2003Date of Patent: September 25, 2007Assignee: Iowa State University Research Foundation, Inc.Inventors: Brian Gleeson, Daniel Sordelet, Wen Wang
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Patent number: 6946039Abstract: The invention includes a physical vapor deposition target composed of a face centered cubic unit cell metal or alloy and having a uniform grain size less than 30 microns, preferably less than 1 micron; and a uniform axial or planar <220> texture. Also described is a method for making sputtering targets. The method can comprise billet preparation; equal channel angular extrusion with a prescribed route and number of passes; and cross-rolling or forging subsequent to the equal channel angular extrusion.Type: GrantFiled: November 2, 2000Date of Patent: September 20, 2005Assignee: Honeywell International Inc.Inventors: Vladimir M. Segal, Stephane Ferrasse, Frank Alford
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Patent number: 6808570Abstract: A fin and a tube for a high-temperature heat exchanger are made of a nickel-based alloy which contains 2.0 to 5.0% of Al and further contains, as required, at least one selected from the group consisting of 0.1 to 2.5% of Si, 0.8 to 4.0% of Cr, and 0.1 to 1.5% of Mn, the balance being Ni and unavoidable impurities.Type: GrantFiled: March 7, 2003Date of Patent: October 26, 2004Assignee: Mitsubishi Materials CorporationInventor: Akira Mitsuhashi
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Patent number: 6720088Abstract: A group of alloys suitable for use in a high-temperature, oxidative environment, a protective coating system comprising a diffusion barrier that comprises an alloy selected from the group, an article comprising the diffusion barrier layer, and a method for protecting an article from a high-temperature oxidative environment comprising disposing the diffusion barrier layer onto a substrate are presented.Type: GrantFiled: February 5, 2002Date of Patent: April 13, 2004Assignee: General Electric CompanyInventors: Ji-Cheng Zhao, Melvin Robert Jackson, Richard John Grylls, Ramgopal Darolia
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Patent number: 6689233Abstract: A hydrogen storage material which is characterized by having, as a cast alloy, a flaky or similar shape with a thickness of 50 to 500 &mgr;m and showing such crystallite orientation that the X-ray diffraction pattern has an intensity ratio of plane indices (002)/(200) of 2 to 10 as measured with the cooled surface of the flaky cast alloy being in parallel with a mount, and a process of producing the same.Type: GrantFiled: December 10, 2001Date of Patent: February 10, 2004Assignee: Mitsui Mining & Smelting Company Ltd.Inventors: Kiyotaka Yasuda, Daisuke Mukai, Minoru Sakai, Shigeo Hirayama, Kazuhito Komatsu, Shinya Kagei
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Patent number: 6652991Abstract: The addition of small amounts of CeO2 and Cr to intermetallic compositions of NiAl and FeAl improves ductility, thermal stability, thermal shock resistance, and resistance to oxidation, sulphidization and carburization.Type: GrantFiled: October 9, 2002Date of Patent: November 25, 2003Assignee: The Governors of the University of AlbertaInventors: You Wang, Weixing Chen
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Publication number: 20030205300Abstract: Hydrogen storage alloy has: (1) a main composition expressed by the formula of Mm—(Ni—Al—Co—Mn); (2) a ratio of the number of atoms expressed by the formula of (Ni—Al—Co—Mn) is 5.5<(Ni+Al+Co+Mn)≦9, and 3.5≦Ni, when Mm is set at 1 in a ratio of the number of atoms; and (3) an internal structure having a hydrogen storage alloy phase expressed by the general formula of AB5, and a second phase existing in the hydrogen storage alloy phase.Type: ApplicationFiled: March 24, 2003Publication date: November 6, 2003Inventor: Kenji Nakamura
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Publication number: 20030175590Abstract: Hydrogen storage alloy has: (1) a main composition expressed by the formula of Mm-(Ni—Al—Co—Mn); (2) a ratio of the number of atoms expressed by the formula of (Ni—Al—Co—Mn) is 5.5<(Ni+Al+Co+Mn)≦9, and 3.5≦Ni, when Mm is set at 1 in a ratio of the number of atoms; and (3) an internal structure having a hydrogen storage alloy phase expressed by the general formula of AB5, and a second phase existing in the hydrogen storage alloy phase.Type: ApplicationFiled: March 24, 2003Publication date: September 18, 2003Inventor: Kenji Nakamura
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Patent number: 6599346Abstract: A biaxially textured alloy article having a magnetism less than pure Ni includes a rolled and annealed compacted and sintered powder-metallurgy preform article, the preform article having been formed from a powder mixture selected from the group of mixtures consisting of: at least 60 at % Ni powder and at least one of Cr powder, W powder, V powder, Mo powder, Cu powder, Al powder, Ce powder, YSZ powder, Y powder, Mg powder, and RE powder; the article having a fine and homogeneous grain structure; and having a dominant cube oriented {100}<100> orientation texture; and further having a Curie temperature less than that of pure Ni.Type: GrantFiled: August 16, 2001Date of Patent: July 29, 2003Assignee: UT-Battelle, LLCInventors: Amit Goyal, Robert K. Williams, Donald M. Kroeger
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Publication number: 20030136480Abstract: A process for producing a heat-resistant intermetallic compound Ni3Al foil having a room-temperature ductility, which comprises a first step of arc-melting an alloy having a chemical composition containing Ni as a main component and Al to form a starting rod, a second step of growing the starting rod in columnar crystal form by unidirectional solidification, a third step of cutting out the unidirectionally solidified rod to form a plate, and a fourth step of cold-rolling the plate cut at room temperature to form a foil. The invention can provide a process for producing a thin Ni3Al foil which has a thickness of 200 microns or less and which is excellent in high-temperature strength, oxidation and corrosion resistances and room-temperature ductility.Type: ApplicationFiled: January 8, 2002Publication date: July 24, 2003Inventors: Toshiyuki Hirano, Masahiko Demura
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Publication number: 20030047254Abstract: A hydrogen storage material which is characterized by having, as a cast alloy, a flaky or similar shape with a thickness of 50 to 500 &mgr;m and showing such crystallite orientation that the X-ray diffraction pattern has an intensity ratio of plane indices (002)/(200) of 2 to 10 as measured with the cooled surface of the flaky cast alloy being in parallel with a mount, and a process of producing the same.Type: ApplicationFiled: December 10, 2001Publication date: March 13, 2003Inventors: Kiyotaka Yasuda, Daisuke Mukai, Minoru Sakai, Shigeo Hirayama, Kazuhito Komatsu, Shinya Kagei
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Publication number: 20030005982Abstract: A negative electrode of a battery, chiefly includes hydrogen absorption alloy particles each having a surface layer. The alloy particles satisfy R2/R1≧0.004 and 5 &mgr;m≦R1≦20 &mgr;m, or preferably 5 &mgr;m≦R1≦12.5 &mgr;m, where R1 is a half of a median diameter of the particles and R2 is thickness of the surface layers.Type: ApplicationFiled: May 16, 2002Publication date: January 9, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Shinichiro Ito, Hajime Seri, Kojiro Ito, Shinichi Yuasa, Nobuyasu Morishita
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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: 6471791Abstract: The invention relates to a coating which contains large volumetric fractions, preferably from 20 to 90% by volume, of NiAl-&bgr; phase in a &ggr; matrix. It contains the following microalloying elements which increase the ductility of the coating (data in % by weight): 0.1-8 Fe and/or 0.1-8 Mo and/or 0.1-8 Ga, where the total Fe, Mo and Ga content is at most 10%. In addition, small amounts of Zr, C and/or B may be added to the alloy, strengthening the &bgr;/&ggr; phase boundaries.Type: GrantFiled: May 18, 2000Date of Patent: October 29, 2002Assignee: Alstom (Switzerland) LtdInventors: Mohamed Nazmy, Hans Joachim Schmutzler
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Publication number: 20010037843Abstract: Provided is an inexpensive process for producing hydrogen absorbing alloy powder suitable for a nickel-metal hydride storage battery having a high rate discharge property, a high capacity and a long cycle life for repetition of charge and discharge. The process comprises a step of an addition of a rare earth metal oxide and/or hydroxide to a hydrogen absorbing alloy powder, a wet or dry mixing step and a thermal treatment step in an inert atmosphere or in a vacuum.Type: ApplicationFiled: June 19, 2001Publication date: November 8, 2001Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Naofumi Shinya, Hiroto Sugahara, Masatoshi Ishii
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Publication number: 20010007638Abstract: Disclosed is a hydrogen occluding alloy used for a cathode of battery which enables to provide for a high discharge capacity at small number of charge/discharge cycles by a high-rate initial activation treatment and to increase a high-rate discharge capacity at low temperature.Type: ApplicationFiled: December 14, 2000Publication date: July 12, 2001Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Koichi Kita, Masahiro Wada, Katsuo Sugahara, Takeshi Isobe, Takuya Murai
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Patent number: 6245165Abstract: The present invention concerns a hydrogen storage alloy powder composition for nickel metal hydride rechargeable batteries. The powder is distinguished by a fine dendritic stnucture and is prepared by gas atomising a metal melt and rapidly cooling the gas atomised powder, which is subsequently heat treated and pulverised.Type: GrantFiled: December 2, 1999Date of Patent: June 12, 2001Assignee: Hoganas ABInventors: Johan Arvidsson, Ralf Carlström, Hans Hallén, Sture Löfgren
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Patent number: 6238620Abstract: A novel Ni3Al-based alloy exhibits strengths and hardness in excess of the standard base alloy IC-221M at temperatures of up to about 1000° C. The alloy is useful in tool and die applications requiring such temperatures, and for structural elements in engineering systems exposed to such temperatures.Type: GrantFiled: September 15, 1999Date of Patent: May 29, 2001Assignee: U.T.Battelle, LLCInventors: Chain T. Liu, Everett E. Bloom
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Patent number: 6207105Abstract: A wear-resistant Ni\Cu alloy and methods of preparing same are disclosed. The alloy comprises a ductile, continuous phase of Ni\Cu with a discontinuous phase of hardened Ti containing particles distributed throughout the continuous phase. The particles are Ti\Al intermetallic or complex TixAlyNiz complex or particle. The alloying components are poured and mixed in the melt under an inert atmosphere, then slowly cooled to provide the desired cast article. The alloy should be protected during melting and cooling in a protective atmosphere, such as a vacuum, or an inert atmosphere so as to inhibit oxide and nitride formation that would otherwise adversely affect desirable alloy properties.Type: GrantFiled: December 20, 1999Date of Patent: March 27, 2001Assignee: Global Manufacturing Solutions, Inc.Inventor: Charles M. Woods
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Patent number: 6130006Abstract: There is provided a hydrogen-absorbing alloy which contains an alloy ingot manufactured by means of a casting or sintering method or a pulverized product of the alloy ingot, and the alloy ingot being represented by the following general formula (1),(Mg.sub.1-a-b R1.sub.a M1.sub.b)Ni.sub.z (1)wherein R1 is at least one element selected from rare earth elements (including Y), M1 is at least one element selected from elements having a larger electronegativity than that of Mg (excluding the elements of R1, Cr, Mn, Fe, Co, Cu, Zn and Ni), and a, b and z are respectively a number satisfying conditions 0.1.ltoreq.a.ltoreq.0.8, 0<b.ltoreq.0.9, 1-a-b>0, and 3.ltoreq.z.ltoreq.3.8.Type: GrantFiled: June 16, 1998Date of Patent: October 10, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Tatsuoki Kohno, Isao Sakai, Masaaki Yamamoto, Motoya Kanda, Hideki Yoshida, Fumiyuki Kawashima, Takao Sawa, Takamichi Inaba, Shusuke Inada, Hirotaka Hayashida, Hiroshi Kitayama
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Patent number: 6110304Abstract: The hydrogen-absorbing alloy electrode for alkaline storage batteries according to the invention comprises a hydrogen absorbing alloy powder prepared by grinding a strip of hydrogen absorbing alloy produced by solidifying a molten alloy by a roll method and satisfying the following relations:r/t.ltoreq.0.5 (1)60.ltoreq.t.ltoreq.180 (2)30.ltoreq.r.ltoreq.90 (3)wherein r represents the mean particle size (.mu.m) of the hydrogen absorbing alloy powder and t represents the mean thickness (.mu.m) of the strip absorbing alloy. The hydrogen absorbing alloy electrode of this invention features an improved high-rate discharge characteristic at low temperature.Type: GrantFiled: November 15, 1996Date of Patent: August 29, 2000Assignee: Sanyo Electric Co., Ltd.Inventors: Mitsuzo Nogami, Yoshinori Matsuura, Mamoru Kimoto, Nobuyuki Higashiyama, Mitsunori Tokuda, Takahiro Isono, Ikuo Yonezu, Koji Nishio
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Patent number: 6096141Abstract: Carbide-forming elements are added to nickel-based superalloys so as to minimize grain defects, such as freckle and stray grain defects. More specifically, carbide-forming elements that form from the liquid in the mushy zone of the solidification front of single crystal (SC) and directionally solidified (DS) nickel-based superalloys are added so as to reduce the formation of freckle and stray grain defects in such alloys. A preferred nickel-based superalloy includes, by weight, between about 6.00%-9.25% tantalum, 4.75%-6.50% tungsten, at least about 2.75% rhenium, between about 5.00% to about 7.00% aluminum, at least about 0.10% hafnium and carbon in an amount sufficient (typically between about 0.10-0.15% by weight) to form carbides with other constituents to reduce significantly freckle formation in the mushy zone of the superalloy during casting.Type: GrantFiled: August 3, 1998Date of Patent: August 1, 2000Assignee: General Electric Co.Inventors: Warren Tan King, Tresa M. Pollock, Christine Louise Zemsky, Wendy Howard Murphy
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Patent number: 6083327Abstract: A Ni based hydrogen occluding alloy having the composition, comprising: by weight:(i) 32-38% of at least one of La or Ce,(ii) 0.1-17% Co,(iii) 0.1-3.5% Al,(iv) 0.5-10% Mn,(v) 0.005-0.1% of hydrogen, withthe balance being Ni and unavoidable impurities, wherein said alloy has a microstructure of a phase having a Ce.sub.2 Ni.sub.7 -type crystal structure and rare earth element hydride dispersively distributed in a matrix having a CaCu.sub.5 -type crystal structure and, wherein the amount of said phase having a Ce.sub.2 Ni.sub.7 -type crystal structure is 1-40% by area and the amount of said rare earth element hydride is 0.5-20% by area.Type: GrantFiled: June 16, 1999Date of Patent: July 4, 2000Assignee: Mitsubishi Materials CorporationInventors: Kouichi Kita, Katsuo Sugahara, Masahiro Wada, Takuya Murai, Takeshi Isobe
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Patent number: 6066291Abstract: Castings based on the nickel aluminide intermetallic alloy IC-221M were melted and poured with an addition of enough molybdenum to bring its concentration to 5 weight %. This resulted in a minimization or elimination of the nickel-zirconium eutectic phase in the dies machined and prepared from these castings. The benefit of eliminating or minimizing the nickel zirconium eutectic phase with the addition of measurable amounts of molybdenum (Mo) to the nickel aluminide (Ni.sub.3 Al) alloy is the increase in the useful service life of the tooling made from it; thus providing the advantages of increased productivity, enhanced quality and reduced costs in a manufacturing setting. Heat treatment of the dies machined and prepared from these castings was also undertaken. The heat treatment regimen includes solution treatment at 2100.degree. F. for 24 hours and aging from between 1150.degree. F. and 1300.degree. F. for between 12 to 24 hours.Type: GrantFiled: August 29, 1997Date of Patent: May 23, 2000Assignee: United Defense, L.P.Inventors: Chien-Hua Chen, Guy Monroe Maddox, Jr., John Edward Orth, Elliott Lee Turbeville
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Patent number: 5972289Abstract: A polycrystalline alloy is composed essentially of, by weight %: 15% to 30% Mo, 3% to 10% Al, up to 10% Cr, up to 10% Fe, up to 2% Si, 0.01% to 0.2% C, 0.01% to 0.04% B, balance Ni.Type: GrantFiled: May 7, 1998Date of Patent: October 26, 1999Assignee: Lockheed Martin Energy Research CorporationInventors: Vinod K. Sikka, Seetharama C. Deevi, Joseph D. Vought, C. Randal Howell
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Patent number: 5964966Abstract: Specific alloys, in particular Ni-based alloys, that can be biaxially textured, with a well-developed, single component texture are disclosed. These alloys have a significantly reduced Curie point, which is very desirable from the point of view of superconductivity applications. The biaxially textured alloy substrates also possess greatly enhanced mechanical properties (yield strength, ultimate tensile strength) which are essential for most applications, in particular, superconductors. A method is disclosed for producing complex multicomponent alloys which have the ideal physical properties for specific applications, such as lattice parameter, degree of magnetism and mechanical strength, and which cannot be fabricated in textured form. In addition, a method for making ultra thin biaxially textured substrates with complex compositions is disclosed.Type: GrantFiled: September 19, 1997Date of Patent: October 12, 1999Assignee: Lockheed Martin Energy Research CorporationInventors: Amit Goyal, Eliot D. Specht, Donald M. Kroeger, Mariappan Paranthaman
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Patent number: 5817222Abstract: A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1)RNi.sub.x-y M.sub.y (1)(wherein R stands for La, Ce, Pr, Nd, or mixtures thereof, M stands for Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C, or mixtures thereof, x satisfies the formula of 3.5.ltoreq.x<5, and y satisfies the formula of 0<y.ltoreq.2, crystals in the alloy having a LaNi.sub.5 type single phase structure, the alloy including in an amount of not less than 5 volume % and less than 95 volume % thereof crystals each containing not less than 2 and less than 17 antiphase boundaries extending perpendicular to C-axis of a grain of the crystal in the alloy per 20 nm along the C-axis, a method of producing the same, and an anode for a nickel hydrogen rechargeable battery containing as an anode material the above rare earth metal-nickel hydrogen storage alloy and an electrically conductive material.Type: GrantFiled: November 27, 1996Date of Patent: October 6, 1998Assignee: Santoku Metal Industry Co., Ltd.Inventor: Akihito Kaneko
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Patent number: 5735974Abstract: A part of a light-water reactor, for example, a cladding for a light-water reactor has at least a portion made of an intermetallic compound, such as Ni.sub.3 Al, Ni.sub.2 Al.sub.3, TiAl, Ti.sub.3 Al, Pt.sub.2 Si, PtSi, FeAl.sub.2, CoAl, and MoSi.sub.2, thereby having limited irradiation degradation by fast neutrons, improved ductility and usability at high temperatures the intermetallic compound is produced by a process comprising a step of irradiating the intermetallic compound with at least one selected from the group consisting of a neutron, a light ion, and an electron. The intermetallic compound may contain a twin and a third additional element segregatedly present or forms a second phase at or near to a grain boundary.Type: GrantFiled: December 10, 1996Date of Patent: April 7, 1998Assignee: Japan Atomic Energy ResearchInventors: Akimichi Hishinuma, Katsumaro Fukai
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Patent number: 5725691Abstract: Alloys for use in structural applications based upon NiAl to which are added selected elements to enhance room temperature ductility and high temperature strength. Specifically, small additions of molybdenum produce a beneficial alloy, while further additions of boron, carbon, iron, niobium, tantalum, zirconium and hafnium further improve performance of alloys at both room temperature and high temperatures. A preferred alloy system composition is Ni--(49.1.+-.0.8%)Al--(1.0.+-.0.8%)Mo--(0.7.+-.0.5%)Nb/Ta/Zr/Hf--(nearly zero to 0.03%)B/C, where the % is at. % in each of the concentrations. All alloys demonstrated good oxidation resistance at the elevated temperatures. The alloys can be fabricated into components using conventional techniques.Type: GrantFiled: February 29, 1996Date of Patent: March 10, 1998Assignee: Lockheed Martin Energy Systems, Inc.Inventor: Chain T. Liu
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Patent number: 5669989Abstract: A Ni--Fe magnetic alloy consists essentially of: 77 to 80 wt. % Ni, 3.5 to 5 wt. % Mo, 1.5 to 3 wt. % Cu, 0.1 to 1.1 wt. % Mn, 0.1 wt. % or less Cr, 0.003 wt. % or less S, 0.01 wt. % or less P, 0.005 wt. % or less 0, 0.003 wt. % or less N, 0.02 wt. % or less C, 0.001 to 0.05 wt. % Al, 1 wt. % or less Si, 2.6-6 of the weight ratio of Ca to S, (Ca/S), and the balance being Fe and inevitable impurities, satisfies an equation of 3.2.ltoreq.(2.02.times.?Ni!-11.13.times.?Mo!-1.25.times.?Cu!-5.03.times.?M n!)/(2.13.times.?Fe!).ltoreq.3.8; and has a Mo segregation ratio defined by a seregration equation satisfying 5% or less, the seregration equation being .vertline.(Mo content in a segregation region-Mo average content)/(Mo average content).vertline..times.100%. A method for producing a magnetic Ni--Fe alloy comprises the steps of: a first heating step of heating an alloy ingot to 1200.degree. to 1300.degree. C. for 10 to 30 hrs; slabbing the heated ingot at a finishing temperature of 950.degree. C.Type: GrantFiled: October 19, 1995Date of Patent: September 23, 1997Assignee: NKK CorporationInventors: Tadashi Inoue, Kiyoshi Tsuru, Shinichi Okimoto, Naokazu Yamamura, Tetsuo Yamamoto, Hirohisa Haiji