Base Metal One Or More Of Iron Group, Copper(cu), Or Noble Metal Patents (Class 75/246)
  • Patent number: 10351938
    Abstract: Iron-based metallurgical powders comprising vanadium are described, as well as compacted articles made thereof. These articles have improved mechanical properties.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: July 16, 2019
    Assignee: Hoeganaes Corporation
    Inventors: Christopher T. Schade, Bruce Lindsley, Thomas F. Murphy, Wing-Hong Chen
  • Patent number: 10213832
    Abstract: The present invention provides a sintered body and a production method therefor in which effects of pores remaining at a surface of the sintered body can be avoided without removing the pores by machining and plastic working, thereby obtaining strength equivalent to that of ingot materials. The sintered member comprises: a hardness distribution in which hardness contiguously varies from a surface to an inner portion; a Vickers hardness value of 730 or less at the surface; the maximum hardness of which portion exists in a region of 150 to 300 ?m from the surface; wherein the maximum hardness is a Vickers hardness value of 600 or more.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: February 26, 2019
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Go Hagimoto, Tomoyuki Kohida, Katsuhiko Ueda, Kenzo Morita, Shuichi Aoki
  • Patent number: 10076789
    Abstract: A surface-coated titanium carbonitride-based cermet cutting tool is a surface-coated TiCN-based cermet cutting tool in which a Ti compound layer that is a hard coating layer is deposited as a first layer on the surface of a TiCN-based cermet body containing W and Mo, and a Mo-enriched layer having an average thickness of 0.5 to 10 nm is formed at an interface between a TiCN phase of the body and the hard coating layer.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: September 18, 2018
    Assignee: MITSUBISHI MATERIALS CORPORATION
    Inventors: Makoto Igarashi, Akihiro Murakami
  • Patent number: 10058922
    Abstract: The object of the present invention is to provide a compact for producing a sintered alloy which allows a sintered alloy obtained by sintering the compact to have improved mechanical strength and wear resistance, a wear-resistant iron-based sintered alloy, and a method for producing the same. The wear-resistant iron-based sintered alloy is produced by: forming a compact for producing a sintered alloy from a powder mixture containing a hard powder, a graphite powder, and an iron-based powder by powder compacting; and sintering the compact for producing a sintered alloy while diffusing C in the graphite powder of the compact for producing a sintered alloy in hard particles that constitute the hard powder. The hard particles contain 10% to 50% by mass of Mo, 3% to 20% by mass of Cr, and 2% to 15% by mass of Mn, with the balance made up of incidental impurities and Fe, and the hard powder and the graphite powder contained in the powder mixture account for 5% to 60% by mass and 0.5% to 2.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: August 28, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, FINE SINTER CO., LTD, SANYO SPECIAL STEEL CO., LTD
    Inventors: Nobuyuki Shinohara, Kimihiko Andou, Yoshihisa Ueda, Yusaku Yoshida, Masaru Sugimoto, Toshiyuki Sawada, Shingo Fukumoto
  • Patent number: 9950369
    Abstract: Mixed powder that contains first hard particles, second hard particles, graphite particles, and iron particles is used to manufacture a sintered alloy. The first hard particle is a Fe—Mo—Cr—Mn based alloy particle, the second hard particle is a Fe—Mo—Si based alloy particle. The mixed powder contains 5 to 50 mass % of the first hard particles, 1 to 8 mass % of the second hard particles, and 0.5 to 1.0 mass % of the graphite particles when total mass of the first hard particles, the second hard particles, the graphite particles, and the iron particles is set as 100 mass %.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: April 24, 2018
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, FINE SINTER CO., LTD, SANYO SPECIAL STEEL CO., LTD
    Inventors: Nobuyuki Shinohara, Kimihiko Ando, Yoshihisa Ueda, Yusaku Yoshida, Masaru Sugimoto, Toshiyuki Sawada, Shingo Fukumoto
  • Patent number: 9601601
    Abstract: A hydrogen barrier layer is selectively provided over an oxide semiconductor layer including hydrogen and hydrogen is selectively desorbed from a given region in the oxide semiconductor layer by conducting oxidation treatment, so that regions with different conductivities are formed in the oxide semiconductor layer. After that, a channel formation region, a source region, and a drain region can be formed with the use of the regions with different conductivities formed in the oxide semiconductor layer.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 21, 2017
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Junichiro Sakata
  • Patent number: 9556904
    Abstract: Provided is a sintered bush including a porous metallic sintered body including: a iron (Fe) based matrix containing a martensite structure; and one or more kind of metal matrix selected from copper (Cu), tin (Sn), and nickel (Ni), in which a lubricant which has oil separation of 5 to 10% at an operational temperature of 60 to 80° C. and is semisolid or solid at room temperature is impregnated in pores of the porous sintered body.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: January 31, 2017
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Dong Pil Lim, Sang Beom Kim, Dong Seob Shim
  • Patent number: 9469890
    Abstract: A water atomized prealloyed chromium-free, iron-based steel powder is provided which comprises by weight-%: 0.05-0.4 V, 0.09-0.3 Mn, less than 0.1 Cr, less than 0.1 Mo, less than 0.1 Ni, less than 0.2 Cu, less than 0.1 C, less than 0.25 O, and less than 0.5 of unavoidable impurities, with the balance being iron.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: October 18, 2016
    Assignee: HOGANAS AB (Publ)
    Inventor: Sven Bengtsson
  • Patent number: 9349511
    Abstract: A reactor 1 of the present invention includes a coil 2 and a magnetic core 3 disposed inside and outside the coil 2 to form a closed magnetic path. At least part of the magnetic core 3 is made of a composite material containing a magnetic substance powder and a resin containing the powder being dispersed therein. The magnetic substance powder contains powders respectively made of a plurality of materials differing in the relative permeability, representatively, a pure iron powder and an iron alloy powder. Thanks to provision of the magnetic core 3 made of the composite material containing magnetic substance powders made of different types of materials, the reactor 1 achieves both a high saturation magnetic flux density and a low-loss characteristic.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: May 24, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Kazuhiro Inaba, Toru Maeda
  • Patent number: 9073121
    Abstract: In a method for producing a sintered compact, a composition containing metal powder and an organic binder is formed into a given shape. When baking is performed by using a baking furnace inside of which a jig containing silica is provided, a furnace atmosphere of the baking furnace is set to be an atmosphere of inert gas, a furnace pressure is controlled to be 0.1 kPa or more but 100 kPa or less, and the furnace pressure during baking is increased at a time when the process is in the middle of heating-up.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: July 7, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Hidefumi Nakamura, Hideki Ishigami
  • Publication number: 20150143953
    Abstract: A refractory metal matrix-ceramic compound multi-component composite material with the super-high melting point is disclosed. At least one ceramic compound A and at least one refractory bonding metal B are fused together by the smelting process to make the multi-component composite material. The fused ingredients of the multi-component composite material are mAnB, and (m+n)max=13. The positive integer m is the number of the kinds of the ceramic components A, and the positive integer n is the number of the kinds of the refractory bonding metals B. The absolute value of the combining enthalpy of the ceramic compound A is larger than the absolute value of the combining enthalpy between the ceramic compound A and the refractory bonding metal B. The multi-component composite material has the properties including over 3000° C. melting point, high stability, hardness, ductility, and fusibility in high or low temperature, fast production, and low cost.
    Type: Application
    Filed: October 4, 2013
    Publication date: May 28, 2015
    Applicant: National Tsing Hua University
    Inventor: Swe-Kai CHEN
  • Publication number: 20150114178
    Abstract: A metal powder for powder metallurgy contains Fe as a principal component, Cr in a proportion of 10% by mass or more and 30% by mass or less, C in a proportion of 0.15% by mass or more and 1.5% by mass or less, Si in a proportion of 0.3% by mass or more and 1% by mass or less, Zr in a proportion of 0.01% by mass or more and 0.5% by mass or less, Nb in a proportion of 0.01% by mass or more and 0.5% by mass or less, and Mn and Ni in a total proportion of 0.05% by mass or more and 1.6% by mass or less. Further, the metal powder for powder metallurgy preferably has a crystal structure of martensite-based stainless steel.
    Type: Application
    Filed: October 30, 2014
    Publication date: April 30, 2015
    Inventors: Hideki ISHIGAMI, Hidefumi NAKAMURA, Yukihiko SHIOHARA
  • Patent number: 8999514
    Abstract: Provided is bond coating powder and method of making. The method includes providing a powder including a plurality of parent particles. The method includes providing a plurality of dispersoids. The method includes mechanically alloying the powder and the plurality of dispersoids at ambient temperature. The mechanical alloying operable to provide a selective occupation of the plurality of dispersoids in a grain boundary area of the plurality of parent particles providing the bond coating powder. The plurality of dispersoids occupy about 18 percent to about 30 percent of the grain boundary area of the bond coating powder.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: April 7, 2015
    Assignee: General Electric Company
    Inventors: Arunkumar Shamrao Watwe, Yuk-Chiu Lau
  • Publication number: 20150090074
    Abstract: The invention refers to a method for manufacturing a three-dimensional metallic article/component made of a Ni-, Co-, Fe-based superalloy or combinations thereof, entirely or partly, by a powder based additive manufacturing process. During the step of performing powder melting by scanning a dual laser setup is used, where two laser beams of different beam properties are combined in the same machine and by adjusted beam profiling and integration of a suitable beam switch in a controlled manner a switching between two different laser beam diameters is performed. In each layer the laser beam with the smaller diameter scans the whole area and in every kth layer, with k>1, the laser beam with the larger diameter scans the area where a coarse grain size is needed thereby remelting the area with fine grain sizes. With such a manufacturing method higher lifetime and operation performances of metallic parts and prototypes can be reached.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Inventors: Thomas ETTER, Matthias HOEBEL, Julius SCHURB, Felix ROERIG
  • Publication number: 20150093280
    Abstract: A material which can be used to manufacture components which exhibit high strength and high wear resistance, at the same time possessing reasonable ductility. The material also has cost advantages compared to other potential metal powder solutions. An iron based powder composition which achieves desired microstructure/properties and associated sliding wear resistance with reduced content of expensive alloying ingredients such as admixed elemental Ni and Copper.
    Type: Application
    Filed: January 3, 2013
    Publication date: April 2, 2015
    Inventors: Christophe Szabo, Senad Dizdar, Ola Bergman
  • Patent number: 8993493
    Abstract: Sliding parts are made of Pb-free Cu—Bi based sintered material. The side in contact with a shaft is machined to a predetermined roughness. A number of Bi phases are present on the finished surface. Stable performance of Bi is to be exhibited. Machined sintered material covers a portion of the Bi phases. The ratio of the exposed surface area of the Bi phases is 0.5% or more relative to the area of the finished surface.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: March 31, 2015
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Ryo Mukai, Hiromi Yokota, Kao Mouri
  • Patent number: 8992658
    Abstract: A sintered metal bearing is obtained by compression-molding of a raw-material powder containing at least a Cu powder, an SUS powder, and a pure Fe powder and thereafter sintering a compression-molded body at a predetermined temperature.
    Type: Grant
    Filed: March 2, 2010
    Date of Patent: March 31, 2015
    Assignee: NTN Corporation
    Inventors: Fuyuki Ito, Kazuo Okamura, Kenji Hibi
  • Publication number: 20150075327
    Abstract: Disclosed is process for producing a wear-resistant coating on a component. The process comprises providing an electrolyte which contains Co and/or Ni, dispersing first particles comprising hard material particles and/or slip material particles in the electrolyte, dispersing second particles comprising metal alloy particles in which the metal alloy comprises chromium and aluminum in the electrolyte, providing a component to be coated in a bath of the electrolyte which has first and second particles dispersed therein, and electrodepositing a matrix of Co and/or Ni with incorporated first and second particles on the component. A correspondingly produced wear-resistant coating is also disclosed.
    Type: Application
    Filed: September 12, 2014
    Publication date: March 19, 2015
    Inventors: André WERNER, Josef LINSKA
  • Publication number: 20150059525
    Abstract: The NdFeB system sintered magnet according to the present invention is a NdFeB system sintered magnet produced by diffusing Dy and/or Tb which are/is attached to a surface of a base material produced by orienting powder of a NdFeB system alloy in a magnetic field, and sintering the powder of the NdFeB system alloy, into grain boundaries inside the base material by grain boundary diffusion treatment, wherein a squareness ratio is equal to or higher than 95%. The NdFeB system sintered magnet can be produced by producing a base material of the NdFeB system sintered magnet by using a NdFeB system alloy with lamellas of a rare-earth rich phase dispersed substantially uniformly at predetermined spaces, as a starting alloy, and causing the alloy to occlude hydrogen, without performing heating for desorbing the occluded hydrogen thereafter until a sintering process, and applying grain boundary diffusion treatment to the base material.
    Type: Application
    Filed: March 26, 2013
    Publication date: March 5, 2015
    Inventors: Masato Sagawa, Naoki Fujimoto, Kazuyuki Komura, Tetsuhiko Mizoguchi
  • Patent number: 8961712
    Abstract: The present invention provides a rare earth based sintered magnet. The magnet is a rare earth based permanent magnet with a R-T-B (R represents one or more elements selected from Y and rare earth elements, T represents one or more metal elements including Fe or the combination of Fe and Co, and B represents B or the combination of B and C) based composition. When a R-rich phase (R represents rare earth element(s)) with atomic ratio of (Fe+Co)/(LR+HR+Fe+Co)?0.2 (LR represents Y and light rare earth element(s) selected from 57La to 63Eu, and HR represents heavy rare earth element(s) selected from 64Gd to 71Lu) is present in the grain boundary triple point, a region with HR/(LR+HR)?0.01 (atomic ratio) is present in the R-rich phase, and the region with HR/(LR+HR)?0.01 accounts for 10% to 90% of the area of the grain boundary triple point.
    Type: Grant
    Filed: August 2, 2012
    Date of Patent: February 24, 2015
    Assignee: TDK Corporation
    Inventors: Takuma Hayakawa, Ryota Kunieda, Tetsuya Chiba, Kenichi Nishikawa
  • Publication number: 20150040725
    Abstract: The application discloses a rare-earth permanent magnetic powder, a bonded magnet, and a device using the bonded magnet. The rare-earth permanent magnetic powder comprises 4 to 12 at. % of Nd, 0.1 to 2 at. % of C, 10 to 25 at. % of N and 62.2 to 85.9 at. % of T, wherein T is Fe or FeCo and the main phase of the rare-earth permanent magnetic powder is a hard magnetic phase with a TbCu7 structure. Material volatilization can be avoided effectively during a preparation process of the rare earth permanent magnetic powder, thus improving the wettability with a water-cooling roller during the preparation process and final prepared materials are provided with good magnetic properties.
    Type: Application
    Filed: July 2, 2012
    Publication date: February 12, 2015
    Inventors: Yang Luo, Hongwei Li, Dunbo Yu, Kuoshe Li, Wenlong Yan, Jiajun Xie, Shuai Lu
  • Patent number: 8940110
    Abstract: An iron-based corrosion resistant and wear resistant alloy includes (in weight percentage) carbon from about 1.6 to 3%, silicon from about 0.8 to 2.1%, manganese up to 1.0%, chromium from about 12.0 to 15.0%, molybdenum from about 2.0 to 4.0%, nickel from about 0.2 to 0.8%, copper up to 4.0%, boron up to 0.5%, and the balance including iron and incidental impurities. The alloy is suitable for use in elevated temperature applications such as in valve seat inserts for combustion engines.
    Type: Grant
    Filed: September 15, 2012
    Date of Patent: January 27, 2015
    Assignee: L. E. Jones Company
    Inventors: Cong Yue Qiao, David M. Doll
  • Publication number: 20150000468
    Abstract: There is provided a metal powder for powder metallurgy including Zr and Si in a manner such that following conditions of (A) and (B) are satisfied, wherein a remainder thereof includes at least one element selected from the group consisting of Fe, Co and Ni, (A) the mass ratio of a content of Zr to a content of Si is 0.03 to 0.3, and (B) the content of Si is 0.35 to 1.5% by mass.
    Type: Application
    Filed: September 17, 2014
    Publication date: January 1, 2015
    Inventor: Hidefumi NAKAMURA
  • Publication number: 20140366687
    Abstract: Recycled Nd—Fe—B sintered magnets. One of the recycled Nd—Fe—B sintered magnets includes a composition of WaRbAc, where waste material W comprises material from a waste Nd—Fe—B sintered magnet, rare earth material R comprises at least one of: Nd or Pr, and elemental additives A comprises at least one of: Nd, Pr, Dy, Co, Cu, or Fe, and indices a, b, and c indicate atomic percentages of the corresponding compositions or elements and have values satisfying Nd[0.1-19 at. %*s(Nd), x]Pr[0.1-19 at. %*s(Pr),y]Dy[0.1-19%*s(Dy),z]Co[0,d]Cu[0,e]Fe[0,f] where [m, n] means a range from minimum m and maximum n, s(t) is the atomic percent of element t in starting composition; f(t) is the atomic percent of element t in final composition, x=18?[81, 99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), y=18?[81, 99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), z=18?[81, 99.9] at. %*(s(Nd)+s(Pr)+s(Dy)), d=3?[81, 99.9] at. %*s(Co), e=0.3?[81, 99.9] at. %*s(Cu), and f=77?[81, 99.9] at. %*(s(Fe)+s(Co)).
    Type: Application
    Filed: July 31, 2014
    Publication date: December 18, 2014
    Inventors: Miha ZAKOTNIK, Peter Afiuny, Catalina Oana Tudor, Scott Dunn
  • Patent number: 8883047
    Abstract: Compositions related to skutterudite-based thermoelectric materials are disclosed. Such compositions can result in materials that have enhanced ZT values relative to one or more bulk materials from which the compositions are derived. Thermoelectric materials such as n-type and p-type skutterudites with high thermoelectric figures-of-merit can include materials with filler atoms and/or materials formed by compacting particles (e.g., nanoparticles) into a material with a plurality of grains each having a portion having a skutterudite-based structure. Methods of forming thermoelectric skutterudites, which can include the use of hot press processes to consolidate particles, are also disclosed. The particles to be consolidated can be derived from (e.g., grinded from), skutterudite-based bulk materials, elemental materials, other non-Skutterudite-based materials, or combinations of such materials.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: November 11, 2014
    Assignees: Massachusetts Institute of Technology, Trustees of Boston College
    Inventors: Zhifeng Ren, Jian Yang, Xiao Yan, Qinyu He, Gang Chen, Qing Hao
  • Publication number: 20140326363
    Abstract: The present invention provides R-T-B-based rare earth magnet particles comprising no expensive rare resources such as Dy and having an excellent coercive force which can be produced by HDDR treatment without any additional steps. The present invention relates to R-T-B-based rare earth magnet particles comprising crystal grains comprising a magnetic phase of R2T14B, and a grain boundary phase, in which the grain boundary phase has a composition comprising R in an amount of not less than 13.5 atom % and not more than 35.0 atom % and Al in an amount of not less than 1.0 atom % and not more than 7.0 atom %. The R-T-B-based rare earth magnet particles can be obtained by controlling heat treatment conditions in the DR step of the HDDR treatment in the course of subjecting a raw material alloy to the HDDR treatment.
    Type: Application
    Filed: August 30, 2012
    Publication date: November 6, 2014
    Applicant: TODA KOGYO CORP.
    Inventors: Nobuhiro Katayama, Hirofumi Kawasaki, Koichiro Morimoto
  • Publication number: 20140328713
    Abstract: A double-alloy NdFeB rare earth permanent magnetic material and manufacturing method thereof are provided. The method comprises respectively melting an A1 alloy comprising heavy rare earth such as Dy, Tb, Ho and Gd as well as an A2 alloy comprising light rare earth such as La, Ce, Pr and Nd; mixing the A1 alloy and the A2 alloy by a two-dimensional or three-dimensional mixer with a ratio of A1/A2=0˜0.5 under protection of nitrogen; producing powder in a jet mill after mixing; collecting fine powder; putting and mixing the powder and the fine powder in the two-dimensional or three-dimensional mixer; putting into a magnetic field pressing machine for pressing under the protection of the nitrogen after mixing and producing permanent magnetic products by sintering, aging, etc. The present invention can obviously decrease rare earth utilization and increase a magnetic energy product and coercivity of the rare earth permanent magnet.
    Type: Application
    Filed: October 7, 2013
    Publication date: November 6, 2014
    Applicant: China North Magnetic & Electronic Technology Co., LTD
    Inventor: Haotian Sun
  • Patent number: 8876935
    Abstract: A sintered material for valve guides consists of, by mass %, 1.3 to 3% of C, 1 to 4% of Cu, 0.01 to 0.08% of P, 0.05 to 0.5% of Sn, and the balance of Fe and inevitable impurities. The sintered material exhibits a metallic structure made of pores and a matrix. The matrix is a mixed structure of a pearlite phase, a ferrite phase, an iron-phosphorus-carbon compound phase, and at least one of a copper-tin alloy phase and a combination of a copper phase and a copper-tin alloy phase. A part of the pores includes graphite that is dispersed therein. The iron-phosphorus-carbon compound phase is dispersed at 3 to 25% by area ratio, and the copper-tin alloy phase and the combination of the copper phase and the copper-tin alloy phase are dispersed at 0.5 to 3.5% by area ratio, with respect to a cross section of the metallic structure, respectively.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: November 4, 2014
    Assignee: Hitachi Powdered Metals Co., Ltd.
    Inventors: Hiroki Fujitsuka, Hideaki Kawata
  • Patent number: 8876936
    Abstract: Disclosed herein is an engine valve seat, including: iron (Fe) as a main component; about 0.6˜1.2 wt % of carbon (C); about 1.0˜3.0 wt % of nickel (Ni); about 8.0˜11.0 wt % of cobalt (Co); about 3.0˜6.0 wt % of chromium (Cr); about 4.0˜7.0 wt % of molybdenum (Mo); about 0.5˜2.5 wt % of tungsten (W); about 1.0˜3.0 wt % of manganese (Mn); about 0.2˜1.0 wt % of calcium (Ca); and other inevitable impurities.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: November 4, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corporation, Korea Sintered Metal Co., Ltd.
    Inventors: Ki Bum Kim, Eui Jun Kim, Seong Jin Kim, Sung Kweon Jang, Ki Jung Kim, Shin Gyu Kim, Jong Kwan Park, Sung Tae Choi
  • Publication number: 20140318316
    Abstract: The present invention provides a rare earth based sintered magnet. The magnet is a rare earth based permanent magnet with a R-T-B (R represents one or more elements selected from Y and rare earth elements, T represents one or more metal elements including Fe or the combination of Fe and Co, and B represents B or the combination of B and C) based composition. When a R-rich phase (R represents rare earth element(s)) with atomic ratio of (Fe+Co)/(LR+HR+Fe+Co)?0.2 (LR represents Y and light rare earth element(s) selected from 57La to 63Eu, and HR represents heavy rare earth element(s) selected from 64Gd to 7ILu) is present in the grain boundary triple point, a region with HR/(LR+HR)?0.01 (atomic ratio) is present in the R-rich phase, and the region with HR/(LR+HR)?0.01 accounts for 10% to 90% of the area of the grain boundary triple point.
    Type: Application
    Filed: August 2, 2012
    Publication date: October 30, 2014
    Applicant: TDK CORPORATION
    Inventors: Takuma Hayakawa, Ryota Kunieda, Tetsuya Chiba, Kenichi Nishikawa
  • Patent number: 8871354
    Abstract: Provided is a copper-based sliding material including a steel back-metal layer and a Cu alloy layer. The Cu alloy layer contains, by mass %, 10 to 30% of Bi, 0.5 to 5% of an inorganic compound, and the balance being Cu and inevitable impurities. The Cu alloy layer may further contain 0.5 to 5% of Sn and/or at least one element selected from the group consisting of Ni, Fe, P and Ag in a total amount of 0.1 to 10%. The inorganic compound has an average particle size of 1 to 5 ?m and a specific gravity of 70 to 130% relative to the specific gravity of Bi. Bi phase is formed in the Cu alloy layer in an average particle size of 2 to 15 ?m, and the Bi phase is dispersed in the Cu alloy layer and isotropic.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: October 28, 2014
    Assignee: Daido Metal Company Ltd.
    Inventors: Takuo Imai, Kouji Zusi, Kentaro Tujimoto
  • Publication number: 20140311288
    Abstract: The present invention provides a permanent magnet with both a high corrosion resistance and magnetic properties compared to the existing R-T-B based magnets. It is a R-T-B based sintered magnet (wherein, R includes Y (yttrium) and R1 as essential, R1 is at least one kind of rare earth elements except Y but includes Nd as essential, and T is at least one kind of transition metal element including Fe or the combination of Fe and Co as essential). By allowing the ratio of R1 to Y (R1:Y) in the R contained in the grain boundary phase to be 80:20˜35:65 in terms of the calculated molar ratio of the grain boundary phase and adding Y to the raw materials of the R-T-B based magnet, Y segregates at the triple point, and corrosion of grain boundary phase is prevented by oxidized Y.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 23, 2014
    Inventors: Yasushi ENOKIDO, Akihiro OHSAWA
  • Publication number: 20140311290
    Abstract: The present invention provides a permanent magnet with a coercivity that will not be significantly decreased and a light weight compared to conventional R-T-B based permanent magnets. A core-shell structure is formed for the major phase grain by adding Cu to the R-T-B based magnet which is the raw material. When the mass concentration of Y in the core portion is set as EY, the mass concentration of Y in the shell portion is set as LY and the mass concentration of Y in the R2-Fe14—B crystal grain calculated from the ratio R1:Y in the total composition is set as SY, the ratio a of EY to SY (EY/SY) is 1.1 or more. Thus, the magnetic insulation among the crystal grains becomes better which prevents the coercivity from decreasing due to the addition of Y. Further, the addition of Y makes the magnet lighter in weight.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 23, 2014
    Inventors: Yasushi ENOKIDO, Daisuke TANAKA
  • Publication number: 20140311289
    Abstract: The present invention provides a permanent magnet with both a high corrosion resistance and magnetic properties compared to the existing R-T-B based magnets. It is a R-T-B based sintered magnet (wherein, R includes Y (yttrium) and R1 as essential, R1 is at least one kind of rare earth elements except Y but includes Nd as e essential, and T is one or more kinds of transition metal elements including Fe or the combination of Fe and Co as essential). By allowing the ratio of R1 to Y (R1:Y) in the R to be 80:20˜35:65 according to the molar ratio of the sintered magnet composition, Y segregates at the triple point, and corrosion of grain boundary phase is prevented by oxidizing it.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 23, 2014
    Applicant: TDK CORPORATION
    Inventors: Yasushi ENOKIDO, Akihiro OHSAWA
  • Publication number: 20140311287
    Abstract: The present invention provides a permanent magnet with excellent temperature characteristics and without magnetic properties significantly decreased compared to the existing R-T-B based magnet. By means that the R-T-B based magnet as the raw material is applied to heating treatment for a long time, the main phase grains will turn into core-shell like, and said R-T-B based magnet comprises main phase grains having core portion and shell portion that covers the core. When the mass concentration of RI and Y in the core portion is set as ?R1 and ?Y respectively and the mass concentration of R1 and Y in the shell portion is set as ?R1 and ?Y respectively, the ratio (B/A) between the mass concentration ratio of R1 to Y in the shell portion (?R1/?Y=B) and the mass concentration ratio of R1 to Y in the core portion (?R1/?Y=A) is 1.1 or more.
    Type: Application
    Filed: April 16, 2014
    Publication date: October 23, 2014
    Applicant: TDK CORPORATION
    Inventors: Yasushi ENOKIDO, Kyung-Ku CHOI, Ryuji HASHIMOTO, Daisuke TANAKA
  • Publication number: 20140311291
    Abstract: The present invention provides a permanent magnet with excellent adhesion strength with plated layer and without significant decrease in magnetic properties, compared to the conventional R-T-B based magnet. By means that the R-T-B based magnet as the raw material is applied to heating treatment for a long time, the major phase grains will form core-shell like structures in the R-T-B based magnet in which R1 and Ce are included as an essential of R. When the mass concentration of R1 and Ce in the core portion is set as ?R1 and ?Ce respectively and that of R1 and Ce in the shell portion is set as ?R1 and ?Ce respectively, the ratio (B/A) between the mass concentration ratio of R1 to Ce in the shell portion (?R1/?Ce=B) and that of R1 to Ce in the core portion (?R1/?Ce=A) is 1.1 or more.
    Type: Application
    Filed: April 22, 2014
    Publication date: October 23, 2014
    Inventors: Yasushi ENOKIDO, Kyung-Ku CHOI, Kenichi SUZUKI, Daisuke TANAKA
  • Publication number: 20140314612
    Abstract: A method of manufacturing an R-T-B rare earth sintered magnet includes a process of disposing and sintering a compact of a first alloy powder and an alloy material of a second alloy in a chamber of a sintering furnace. The first alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The first alloy contains 11 at % to 17 at % of R, 4.5 at % to 6 at % of B, 0 at % to 1.6 at % of M, and T as the balance, and Dy content in all of the rare earth elements is 0 at % to 29 at %. The second alloy consists of R which represents a rare earth element, T which represents a transition metal essentially containing Fe, a metal element M which represents Al and/or Ga, B, Cu, and inevitable impurities. The second alloy contains 11 at % to 20 at % of R, 4.5 at % to 6 at % of B, and 0 at % to 1.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 23, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: Kenichiro NAKAJIMA, Akifumi MURAOKA, Takashi YAMAZAKI
  • Patent number: 8864870
    Abstract: A method of making dispersion-strengthened alloy particles involves melting an alloy having a corrosion and/or oxidation resistance-imparting alloying element, a dispersoid-forming element, and a matrix metal wherein the dispersoid-forming element exhibits a greater tendency to react with a reactive species acquired from an atomizing gas than does the alloying element. The melted alloy is atomized with the atomizing gas including the reactive species to form atomized particles so that the reactive species is (a) dissolved in solid solution to a depth below the surface of atomized particles and/or (b) reacted with the dispersoid-forming element to form dispersoids in the atomized particles to a depth below the surface of said atomized particles. Bodies made from the dispersion strengthened solidified particles exhibit enhanced fatigue and creep resistance and reduced wear as well as enhanced corrosion and/or oxidation resistance at high temperatures.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: October 21, 2014
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Iver E. Anderson, Robert L. Terpstra
  • Patent number: 8864869
    Abstract: The hearth roll for a continuous annealing furnace is able to suppress the occurrence of buildup on the hearth roll surface and able to be stably used for a long period under the high temperature environment. The hearth roll has a cermet coating comprised 50 to 90 vol % of ceramic and the balance of a heat resistant alloy on its surface, the ceramic containing Cr3C2: over 50 to 90 vol %, Al2O3: 1 to 40 vol %, Y2O3: 0 to 3 vol %, and ZrB2: 0 to 40 vol % and having a balance of unavoidable impurities and pores, the heat resistant alloy containing Cr: 5 to 20 mass %, Al: 5 to 20 mass %, and one or both of Y and Si: 0.1 to 6 mass % and has a balance of one or both of Co and Ni and unavoidable impurities.
    Type: Grant
    Filed: November 28, 2008
    Date of Patent: October 21, 2014
    Assignees: Nippon Steel & Sumitomo Metal Corporation, Tocalo Co., Ltd.
    Inventors: Yasushi Kurisu, Tatsuo Suidzu
  • Patent number: 8858675
    Abstract: A powder metallurgical combination is provided comprising an iron-based powder A comprising core particles of iron to which core particles nickel is diffusion alloyed and wherein said nickel diffusion alloyed to said core particles comprises 4-7% (preferably 4.5-6%) by weight of said iron-based powder A, and a powder B substantially consisting of particles of pure iron. Further a method is provided for preparing a powder metallurgical combination.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: October 14, 2014
    Assignee: Hoganas AB (Publ)
    Inventor: Mats Larsson
  • Patent number: 8852499
    Abstract: The invention concerns a nanocrystalline alloy of the formula: Fe3?xAl1+xMyTz wherein: M represents at least one catalytic specie selected from the group consisting of Ru, Ir, Pd, Pt, Rh, Os, Re, Ag and Ni; T represents at least one element selected from the group consisting of Mo, Co, Cr, V, Cu, Zn, Nb, W, Zr, Y, Mn, Cd, Si, B, C, O, N, P, F, S, Cl and Na; x is a number larger than ?1 and smaller than or equal to +1 y is a number larger than 0 and smaller or equal to +1 z is a number ranging between 0 and +1 The invention also concerns the use of this alloy in a nanocrystalline form or not for the fabrication of electrodes which in particular, can be used for the synthesis of sodium chlorate.
    Type: Grant
    Filed: May 15, 2008
    Date of Patent: October 7, 2014
    Assignees: Hydro-Québec, Meeir Technologie Inc.
    Inventors: Robert Schulz, Sylvio Savoie
  • Patent number: 8845956
    Abstract: The disclosure relates to a method for production of a component, such as a contact piece, for a switchgear assembly. To introduce a slot and apply a contact outer contour directly during the powder-metallurgical production process of the contact material, contouring in the form of a slot or slots is introduced into the powder-metal material, which is located in a mold, essentially in a direction parallel to a normal to a surface of the component, to form the component with a slot.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: September 30, 2014
    Assignee: ABB Technology AG
    Inventors: Dietmar Gentsch, Guenter Pilsinger
  • Publication number: 20140286816
    Abstract: An R-T-B sintered magnet including a composition containing a rare earth element, a transition element and boron, containing essentially no dysprosium as a rare earth element, and having crystal grains with a composition containing a rare earth element, a transition element and boron, and grain boundary regions formed between the crystal grains, wherein the triple point regions which are grain boundary regions surrounded by 3 or more crystal grains have a composition containing a rare earth element, a transition element and boron and have a higher mass ratio of the rare earth element than the crystal grains, the average value of the area of the triple point regions in a cross-section being no greater than 2 ?m2 and the standard deviation of the area distribution being no greater than 3.
    Type: Application
    Filed: October 11, 2012
    Publication date: September 25, 2014
    Applicant: TDK CORPORATION
    Inventors: Eiji Kato, Chikara Ishizaka, Taeko Tsubokura, Tamotsu Ishiyama, Nobuhiro Jingu
  • Publication number: 20140283649
    Abstract: An R-T-B based sintered magnet maintains high magnetic properties and decreases usage of heavy rare earth elements. The magnet includes main phase grains and grain boundary phases, the main phase grain containing a core portion and a shell portion. X in the main phase LR(2-x)HRxT14B of the core portion ranges from 0.00 to 0.07; x in the main phase LR(2-x)HRxT14B of the shell portion ranges from 0.02 to 0.40; and the maximum thickness of the shell portion ranges from 7 nm to 100 nm. LR contains Nd and one or more light rare earth elements consisting of Y, La, Ce, Pr and Sm; HR contains Dy or/and Tb and one or more heavy rare earth elements consisting of Gd, Ho, Er, Tm, Yb and Lu; T contains Fe or/and Co and one or two kinds of Mn and Ni; and B represents boron partly replaced by C (carbon).
    Type: Application
    Filed: October 4, 2012
    Publication date: September 25, 2014
    Applicant: TDK CORPORATION
    Inventors: Ryota Kunieda, Takuma Hayakawa, Tetsuya Chiba, Kenichi Nishikawa, Yoshinori Fujikawa
  • Publication number: 20140286815
    Abstract: An R-T-B based alloy strip containing dendritic crystals including a R2T14B phase, wherein on at least one surface, the average value for the widths of the dendritic crystals is no greater than 60 ?m, and the number of crystal nuclei in the dendritic crystals is at least 500 per 1 mm square area.
    Type: Application
    Filed: October 11, 2012
    Publication date: September 25, 2014
    Applicant: TDK CORPORATION
    Inventors: Tamotsu Ishiyama, Taeko Tsubokura, Eiji Kato, Nobuhiro Jingu, Chikara Ishizaka
  • Publication number: 20140286811
    Abstract: An Fe-based sintered alloy, essentially consists of, in percentage by mass, Mn: 0.5 to 2.0, Mo: 0.3 to 1.6, Cu: 0.4 to 1.5, C: 0.4 to 0.7 and the balance of Fe plus unavoidable impurities; and has a metallic structure made of 5 to 70% of martensite phase relative to a base material except pore and 25 to 90% of bainite phase relative to the base material except the pore.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 25, 2014
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Hiroshi OHMORI, Yuji YAMANISHI
  • Publication number: 20140271317
    Abstract: The present invention is to provide a Co—Cr—Mo alloy excellent in mechanical properties such as yield strength and tensile strength. The present invention is a biocompatible Co—Cr—Mo alloy comprising, in mass %, more than 30% and not more than 36% of Cr, 5 to 8% of Mo, 0.20 to 0.65% of N, and the balance consisting of Co and inevitable impurities, and produced by layered manufacturing. The biocompatible Co—Cr—Mo alloy of the present invention preferably has a solidification structure of a dendrite structure and the primary arm spacing of the dendrite structure is not more than 5 ?m.
    Type: Application
    Filed: October 18, 2012
    Publication date: September 18, 2014
    Applicants: KYOCERA Medical Corporation, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY
    Inventors: Naoyuki Nomura, Takao Hanawa
  • Patent number: 8834595
    Abstract: An ultrasonic welding tool fabricated of powder metal material includes a body and a welding tip extending axially from the body to a working end. The powder metal material can be ferrous-based and admixed with additives, such as alumina, carbide, ferro-molybdenum, ferro-nickel, chrome or tribaloy. An exposed surface of the welding tip can comprise Fe3O4 oxides. The tool is compacted to the desired shape and sintered. The body can include a different second material compacted separately from the welding tip and then joined to the tip and sintered.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: September 16, 2014
    Assignee: Federal-Mogul Corporation
    Inventor: Denis Christopherson, Jr.
  • Publication number: 20140251085
    Abstract: The present invention provides a powder core used for high-frequency magnetic components and a soft magnetic metal powder which is suitable for the manufacturing of the above-described powder core. The invention relates to a soft magnetic metal powder, consisting of, in terms of mass %: 0.5% to 10.0% of Si, 1.5% to 8.0% of Cr, and 0.05% to 3.0% of Sn, with the balance being Fe and unavoidable impurities.
    Type: Application
    Filed: March 4, 2014
    Publication date: September 11, 2014
    Inventors: Mikiko Tsutsui, Yuichiro Fujita
  • Publication number: 20140245863
    Abstract: A raw powder having a composition containing, in weight percent, B: 2.2 to 3.0%; Si: 3.0 to 5.0%; Mo: 18 to 25%; Cu: 1 to 15%, the balance of Ni and unavoidable impurities, with a weight ratio of Mo content to B content being from 7 to 9, is produced using a molten metal spraying method, and the raw powder is then sintered, thereby a corrosion-resistant and wear-resistant Ni-based alloy is produced.
    Type: Application
    Filed: September 26, 2012
    Publication date: September 4, 2014
    Applicant: Toshiba Kikai Kabushiki Kaisha
    Inventors: Yasushi Fukase, Ryosuke Fujimoto, Shinichi Nikaidou