Rare Earth And Transition Metal Containing Patents (Class 148/301)
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Patent number: 11948733Abstract: A method of processing an anisotropic permanent magnet includes forming anisotropic flakes from a hulk magnet alloy, each of the anisotropic flakes having an easy magnetization direction with respect to a surface of the flake and combining the anisotropic flakes with a binder to form a mixture. The method further includes extruding or rolling the mixture without applying a magnetic field such that the easy magnetization directions of the anisotropic flakes align to form one or more layers having a magnetization direction aligned with the easy magnetization directions of the anisotropic flakes, and producing the anisotropic permanent magnet from the layers having the magnetization direction such that the anisotropic permanent magnet has a magnetization with a specific orientation.Type: GrantFiled: January 17, 2020Date of Patent: April 2, 2024Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Wanfeng Li, Chuanbing Rong, Franco Leonardi, Michael W. Degner
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Patent number: 11865623Abstract: A magnetic powder and a method for fabricating the same according to an embodiment of the present disclosure are provided. The magnetic powder is powder particles synthesized using a mixture of a rare earth oxide, a raw material, a metal, a metal oxide and a reducing agent, wherein the powder particles are single-phase, the raw material includes at least one of Fe and Co, the metal includes at least one of Ti, Zr, Mn, Mo, V and Si, and the metal oxide includes at least one of MnO2, MoO3, V2O5, SiO2, ZrO2 and TiO2.Type: GrantFiled: August 6, 2019Date of Patent: January 9, 2024Inventors: Jinhyeok Choe, Ikjin Choi, Hyounsoo Uh, Soon Jae Kwon
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Patent number: 11742121Abstract: An Sm—Fe—N magnet material includes from 7.0 at % to 12 at % of Sm, from 0.1 at % to 1.5 at % of at least one element selected from the group consisting of Hf and Zr, from 0.05 at % to 0.5 at % of C, from 10 at % to 20 at % of N, and from 0 at % to 35 at % of Co, with a remainder being Fe and unavoidable impurities.Type: GrantFiled: February 26, 2019Date of Patent: August 29, 2023Assignee: DAIDO STEEL CO., LTD.Inventor: Iwao Sakazaki
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Patent number: 11694826Abstract: The present disclosure aims to provide a bonded magnet having good magnetic properties and a method of preparing the bonded magnet. The present disclosure provides a method of preparing a bonded magnet, including: a first compression step of compressing a magnetic powder having an average particle size of 10 ?m or less while magnetically orienting it to obtain a first molded article; a second compression step of bringing the first molded article into contact with a thermosetting resin having a viscosity of 200 mPa·s or less, followed by compression to obtain a second molded article; and a heat treatment step of heat treating the second molded article.Type: GrantFiled: December 27, 2019Date of Patent: July 4, 2023Assignee: NICHIA CORPORATIONInventors: Takashi Asada, Shuichi Tada
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Patent number: 11594353Abstract: A sintered magnet contains Sm—Fe—N-based crystal grains and has high coercivity; and a magnetic powder is capable of forming a sintered magnet without lowering the coercivity even if heat is generated in association with the sintering. A sintered magnet comprises a crystal phase composed of a plurality of Sm—Fe—N-based crystal grains and a nonmagnetic metal phase present between the Sm—Fe—N crystal grains adjacent to each other, wherein a ratio of Fe peak intensity IFe to SmFeN peak intensity ISmFeN measured by an X-ray diffraction method is 0.2 or less. A magnetic powder comprises Sm—Fe—N-based crystal particles and a nonmagnetic metal layer covering surfaces of the Sm—Fe—N crystal particles.Type: GrantFiled: July 8, 2019Date of Patent: February 28, 2023Assignees: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY, Murata Manufacturing Co., Ltd.Inventors: Kenta Takagi, Wataru Yamaguchi, Takaaki Yokoyama, Kenji Sakaguchi, Kazuhiro Yoshii, Yuji Yokoyama
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Non-oriented electrical steel sheet and method for manufacturing non-oriented electrical steel sheet
Patent number: 11469018Abstract: A non-oriented electrical steel sheet according to one embodiment of the invention has a chemical composition represented by C: 0.0030% or less, Si: 2.00% or less, Al: 1.00% or less, Mn: 0.10% to 2.00%, S: 0.0030% or less, one or more selected from the group consisting of Mg, Ca, Sr, Ba, Nd, Pr, La, Ce, Zn, and Cd: greater than 0.0100% and not greater than 0.0250% in total, a parameter Q represented by Q=[Si]+2×[Al]?[Mn]: 2.00 or less; Sn: 0.00% to 0.40%, Cu: 0.00% to 1.00%, and a remainder: Fe and impurities, and a parameter R represented by R=(I100+I310+I411+I521)/(I111+I211+I332+I221) is 0.80 or greater.Type: GrantFiled: February 15, 2019Date of Patent: October 11, 2022Assignee: NIPPON STEEL CORPORATIONInventors: Takeshi Kubota, Takeaki Wakisaka, Masafumi Miyazaki, Takashi Morohoshi -
Patent number: 11404187Abstract: A magnetic material is expressed by a composition formula 1: (R1-xYx)aMbTcZnd. R is at least one element selected from the group consisting of rare-earth elements, M is Fe or Fe and Co, T is at least one element selected from the group consisting of Ti, V, Nb, Ta, Mo, and W, x is a number satisfying 0.01?x?0.8, a is a number satisfying 4?a?20 atomic percent, b is a number satisfying b=100?a?c?d atomic percent, c is a number satisfying 0<c<7 atomic percent, and d is a number satisfying 0.01?d?7 atomic percent. The magnetic material includes: a main phase having a ThMn12 crystal phase; and a sub phase containing 50 atomic percent or more of Zn.Type: GrantFiled: February 25, 2019Date of Patent: August 2, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masaya Hagiwara, Shinya Sakurada, Keiko Okamoto
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Patent number: 11404189Abstract: A non-oriented electrical steel sheet produced by hot rolling a steel slab containing, by mass %, C: not more than 0.0050, Si: 3.2 to 4.5%, Mn: 0.1 to 2.0%, P: not more than 0.020%, As: not more than 0.0030%, Sn+Sb: 0.005 to 0.10%, and one or two elements selected from Mo and W by a content ranging from 0.0020 to 0.10% in total, subjecting the resultant steel sheet to one cold rolling or two or more cold rollings including an intermediate annealing therebetween to achieve a final sheet thickness, and then subjecting the cold rolled sheet to finish annealing, a N2 content in an atmosphere in the finish annealing is set to not more than 20 vol %, and average strain rate in the first pass is set to not more than 4/sec, allowing the cold rolling property to improve with no degradation in magnetic property and no decrease in productivity.Type: GrantFiled: May 8, 2018Date of Patent: August 2, 2022Assignee: JFE STEEL CORPORATIONInventors: Tomoyuki Okubo, Yoshiaki Zaizen, Masanori Uesaka, Yoshihiko Oda
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Patent number: 11370949Abstract: This invention provides a regenerator material having a high specific heat, particularly in the temperature range of 10 to 25K, and a regenerator and a refrigerator comprising the regenerator material. The present invention specifically provides an HoCu-based regenerator material represented by general formula (1): HoCu2-xMx (1), wherein x is 0<x?1, and M is at least one member selected from the group consisting of Al and transition metal elements (excluding Cu), as well as a regenerator and a refrigerator comprising the regenerator material.Type: GrantFiled: April 27, 2018Date of Patent: June 28, 2022Assignee: SANTOKU CORPORATIONInventors: Takahiro Kuriiwa, Yasutomo Matsumoto
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Patent number: 11311933Abstract: A method and a plant for the production of a powdery starting material, which is provided for the manufacture of rare earth magnets, are disclosed. First of all, at least one magnetic material, which is comminuted into a powdery intermediate product with a possibly increased concentration of impurities, and/or at least one alloy including rare earth metal are provided, which includes a low concentration of impurities.Type: GrantFiled: May 16, 2019Date of Patent: April 26, 2022Assignee: NETZSCH Trockenmahltechnik GmbHInventors: Frank Winter, Wilhelm Fernengel
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Patent number: 11289249Abstract: The permanent magnet includes: a main phase expressed by a composition formula: RMZNX and having at least one crystal structure selected from the group consisting of a Th2Ni17 crystal structure, a Th2Zn17 crystal structure, and a TbCu7 crystal structure; and a sub phase having a phosphorus compound phase containing a phosphorus compound excluding a phosphoric acid compound.Type: GrantFiled: February 25, 2019Date of Patent: March 29, 2022Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Naoyuki Sanada, Shinya Sakurada
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Patent number: 11009290Abstract: A process for liquefying hydrogen gas into liquid hydrogen that includes: continuously introducing hydrogen gas into an active magnetic regenerative refrigerator module, wherein the module has one, two, three or four stages, wherein each stage includes a bypass flow heat exchanger that receives a bypass helium heat transfer gas from a cold side of a low magnetic or demagnetized field section that includes a magnetic refrigerant bed at a hydrogen gas first cold inlet temperature and discharges hydrogen gas or fluid at a first cold exit temperature; wherein sensible heat of the hydrogen gas is entirely removed by the bypass flow heat exchanger in the one stage module or a combination of the bypass flow heat exchangers in the two, three or four stage module, the magnetic refrigerant bed operates at or below its Curie temperature throughout an entire active magnetic regeneration cycle, and a temperature difference between the bypass helium heat transfer first cold inlet temperature and the hydrogen gas first cType: GrantFiled: September 6, 2019Date of Patent: May 18, 2021Assignees: Battelle Memorial Institute, Emerald Energy NW, LLCInventors: Jamie D. Holladay, Kerry D. Meinhardt, Evgueni Polikarpov, Edwin C. Thomsen, John Barclay, Jun Cui
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Patent number: 10930417Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.Type: GrantFiled: July 19, 2018Date of Patent: February 23, 2021Assignee: GM GLOBAL TECHNOLOGY OPERATIONSInventors: Chen Zhou, Frederick E. Pinkerton
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Patent number: 10867728Abstract: The present invention relates to a method of producing an anisotropic magnetic powder having good magnetic properties. The method of producing an anisotropic magnetic powder includes: pretreating an oxide containing Sm and Fe by heat treatment in a reducing gas atmosphere to obtain a partial oxide; heat treating the partial oxide in the presence of a reductant at a first temperature of 1000° C. or higher and 1090° C. or lower and then at a second temperature lower than the first temperature and in the range of 980° C. or higher and 1070° C. or lower to obtain alloy particles; and nitriding the alloy particles to obtain an anisotropic magnetic powder.Type: GrantFiled: December 20, 2018Date of Patent: December 15, 2020Assignee: NICHIA CORPORATIONInventor: Hisashi Maehara
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Patent number: 10704137Abstract: Provided is a master alloy for a sputtering target, wherein, when elements constituting the master alloy are following X1, X2, Y1, Y2, Y2, and Y3; specifically, where X1 is one or two types of Ta or W; X2 is at least one type of Ru, Mo, Nb or Hf; Y1 is one or two types of Cr or Mn; Y2 is one or two types of Co or Ni; and Y3 is one or two types of Ti or V, the master alloy comprises any one combination of X1-Y1, X1-Y2, X1-Y3, X2-Y1, and X2-Y2 of the foregoing constituent elements. The present invention consequently yields superior effects of being able to obtain a sintered sputtering target with few defects and having a high-density and uniform alloy composition, and, by using this target, to realize the deposition of an alloy barrier film with uniform quality and few particles at a high speed.Type: GrantFiled: September 28, 2015Date of Patent: July 7, 2020Assignee: JX NIPPON MINING & METALS CORPORATIONInventors: Takayuki Asano, Kunihiro Oda
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Patent number: 10693353Abstract: A method for producing a magnet plate for a linear motor is provided. The magnet plate comprises a base plate and a plurality of magnets juxtaposed to one another on a surface of the base plate. The method comprises providing the plurality of magnets on a surface of the base plate at a certain interval, placing the base plate into a mold, supplying a resin material into the mold, so as to form a resin molding covering the plurality of magnets on the surface of the base plate by means of injection molding, and magnetizing the plurality of magnets.Type: GrantFiled: May 17, 2016Date of Patent: June 23, 2020Assignee: FANUC CORPORATIONInventors: Yoshifumi Shimura, Takuya Maeda, Yuusuke Kondou
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Patent number: 10658095Abstract: The present invention relates to an Sm—Fe—N magnet material including: 7.0-12 at % of Sm; 0.1-1.5 at % of at least one element selected from the group consisting of Hf, Zr, and Sc; 0.1-0.5 at % of Mn; 10-20 at % of N; and 0-35 at % of Co, with the remainder being Fe and unavoidable impurities. The present invention also relates to an Sm—Fe—N bonded magnet including a powder of the Sm—Fe—N magnet material and a binder.Type: GrantFiled: September 11, 2017Date of Patent: May 19, 2020Assignee: DAIDO STEEL CO., LTD.Inventors: Iwao Sakazaki, Takefumi Sugiyama
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Patent number: 10629340Abstract: In one embodiment, a permanent magnet includes: a composition expressed by RpFeqMrCusCo100-p-q-r-s (R is a rare-earth element, M is at least one element selected from Zr, Ti, and Hf, 10?p?13.5 at %, 25?q?40 at %, 1.35?r?1.75 at %, and 0.88?s?13.5 at %); and a metallic structure including Th2Zn17 crystal phases each having a Fe concentration of 25 at % or more, and Cu-rich crystal phases each having a Cu concentration of from 25 at % to 70 at %. An average thickness of the Cu-rich crystal phases is 20 nm or less, and an average distance between the Cu-rich crystal phases is 200 nm or less.Type: GrantFiled: November 11, 2013Date of Patent: April 21, 2020Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Yosuke Horiuchi, Shinya Sakurada, Tsuyoshi Kobayashi, Keiko Okamoto, Masaya Hagiwara, Masaki Endo
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Patent number: 10490325Abstract: An magnetic material is a magnetic material expressed by a composition formula: (R1-xYx)aMbTcAd, which includes a main phase consisting of a ThMn12 type crystal phase. 30 atomic percent or more of the element M in the composition formula is Fe.Type: GrantFiled: August 22, 2017Date of Patent: November 26, 2019Assignee: KABUSHIKI KAISHA TOSHIBAInventors: Masaya Hagiwara, Tomohiro Yamashita, Naoyuki Sanada, Yosuke Horiuchi, Shinya Sakurada
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Patent number: 10351935Abstract: Provided is a magnetic compound represented by the formula (R(1-x)Zrx)a(Fe(1-y)Coy)bTcMdAe (wherein R represents one or more rare earth elements, T represents one or more elements selected from the group consisting of Ti, V, Mo, and W, M represents one or more elements selected from the group consisting of unavoidable impurity elements, Al, Cr, Cu, Ga, Ag, and Au, A represents one or more elements selected from the group consisting of N, C, H, and P, 0?x?0.5, 0?y?0.6, 4?a?20, b=100?a?c?d, 0<c<7, 0?d?1, and 1?e?18), in which a main phase of the magnetic compound includes a ThMn12 type crystal structure, and a volume percentage of an ?-(Fe,Co) phase is 20% or lower.Type: GrantFiled: September 3, 2015Date of Patent: July 16, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noritsugu Sakuma, Akira Kato, Kota Washio, Hidefumi Kishimoto, Masao Yano, Akira Manabe, Masaaki Ito, Shunji Suzuki, Kurima Kobayashi
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Patent number: 10325705Abstract: A bond magnet molding is provided that contains coated magnetic particles having at least two layers of an oxide layer of 1-20 nm on a surface of magnetic particles and an organic layer of 1-100 nm on an outer side of the oxide layer. The bond magnet molding preferably includes a Zn alloy as a binder. The Zn alloy has a strain rate sensitivity exponent (m value) of not less than 0.3 and an elongation at break of not less than 50%. The magnet particles have a nitrogen compound containing Sm and Fe that are solidified using the binder at a temperature not higher than a molding temperature.Type: GrantFiled: August 24, 2015Date of Patent: June 18, 2019Assignee: Nissan Motor Co., Ltd.Inventors: Yoshio Kawashita, Masaya Arai, Ryou Murakami, Shinichirou Fujikawa
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Patent number: 10325704Abstract: A rare earth magnet having a main phase and a sub-phase, wherein the main phase has a ThMn12-type crystal structure; the sub-phase contains at least any one of an Sm5Fe17-based phase, an SmCo5-based phase, an Sm2O3-based phase, and an Sm7Cu3-based phase; assuming that the volume of the rare earth magnet is 100%, the volume fraction of the sub-phase is from 2.3 to 9.5% and the volume fraction of an ?-Fe phase is 9.0% or less; and the density of the rare earth magnet is 7.0 g/cm3 or more.Type: GrantFiled: December 15, 2016Date of Patent: June 18, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Noritsugu Sakuma, Akira Kato, Masao Yano, Shunji Suzuki, Kurima Kobayashi
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Patent number: 10192661Abstract: 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: GrantFiled: April 22, 2014Date of Patent: January 29, 2019Assignee: TDK CORPORATIONInventors: Yasushi Enokido, Akihiro Ohsawa
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Patent number: 10079085Abstract: A rare-earth permanent magnetic powder, a bonded magnet containing thereof and a device using the bonded magnet are provided of the present disclosure. The rare-earth permanent magnetic powder comprises: 70 vol % to 99 vol % of a hard magnetic phase and 1 vol % to 30 vol % of a soft magnetic phase, the hard magnetic phase has a TbCu7 structure, and the grain size of the hard magnetic phase is 5 nm to 100 nm; the soft magnetic phase is a Fe phase having a bcc structure, the average grain size of the soft magnetic phase is 1 nm to 30 nm, and the standard deviation of the grain size is below 0.5?.Type: GrantFiled: May 31, 2013Date of Patent: September 18, 2018Assignees: GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS, GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Hongwei Li, Yang Luo, Dunbo Yu, Kuoshe Li, Wenlong Yan, Shipeng Li, Yongqiang Yuan, Haijun Peng
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Patent number: 10062482Abstract: Interstitially modified compounds of rare earth element-containing, iron-rich compounds may be synthesized with a ThMn12 tetragonal crystal structure such that the compounds have useful permanent magnet properties. It is difficult to consolidate particles of the compounds into a bulk shape without altering the composition and magnetic properties of the metastable material. A combination of thermal analysis and crystal structure analysis of each compound may be used to establish heating and consolidation parameters for sintering of the particles into useful magnet shapes.Type: GrantFiled: August 25, 2015Date of Patent: August 28, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Chen Zhou, Frederick E. Pinkerton
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Patent number: 10020102Abstract: The present invention provides an R-T-B based permanent magnet suitable as a magnet with a variable magnetic force for a motor with variable magnetic flux, which has a high residual magnetic flux density, a low coercivity, and a magnetic force that can be reversibly varied by a small external magnetic field. A permanent magnet with a high residual magnetic flux density and a low coercivity that is suitable as a variable magnet for a motor with variable magnetic flux can be obtained, by selecting the rare earth elements consisting of one or more of Y, La and Ce for a predetermined amount of the rare earth element(s) R in the R-T-B based permanent magnet, and further adding a predetermined amount of the additive element(s) which is at least one of Al, Cu, Zr, Hf and Ti.Type: GrantFiled: April 17, 2015Date of Patent: July 10, 2018Assignee: TDK CORPORATIONInventors: Ryuji Hashimoto, Yasushi Enokido, Kenichi Nishikawa
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Patent number: 9964344Abstract: A magnetic cooling apparatus including a plurality of magnetic regenerators including a plurality of magnetocaloric materials to emit heat when magnetized and to absorb heat when demagnetized. The magnetic regenerators are rotatably disposed on a circumference having a predetermined radius, at least one coil is disposed on the circumference and coupled to the magnetic regenerators, and a plurality of permanent magnets is provided inside and outside the circumference to generate a magnetic field to magnetize or demagnetize the magnetic regenerators. The at least one coil interacts with the magnetic field generated by the permanent magnets to rotate the magnetic regenerators. The coil interacting with the magnetic field to magnetize or demagnetize the magnetic regenerators is coupled to the magnetic regenerators such that the magnetic regenerators reciprocate or rotate, thereby minimizing a size of the magnetic cooling apparatus, relative to the use of a motor.Type: GrantFiled: June 24, 2014Date of Patent: May 8, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jin Han Kim, Il Ju Mun, Woo Hyek Choi, Young Dae Ko, Keon Kuk, Min Soo Kim
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Patent number: 9941037Abstract: The instant invention relates to a magnetocaloric material based on NdPrFe17 melt-spun ribbons. This material has improved properties when compared with other similar magnetocaloric (MC) materials since it has an enhanced refrigeration capacity in the room temperature range due to its broader magnetic entropy change as function of the temperature curve. This material is useful as magnetic refrigerant as a part of magnetocaloric refrigerators.Type: GrantFiled: January 6, 2015Date of Patent: April 10, 2018Assignee: Instituto Potosino De Investigacion Cientifica y Tecnologica A.C.Inventors: Jose Luis Sanchez Llamazares, Cesar Fidel Sanchez Valdes, Pablo Jesus Ibarra Gaytan
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Patent number: 9859042Abstract: 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: GrantFiled: July 2, 2012Date of Patent: January 2, 2018Assignee: GRIREM ADVANCED MATERIALS CO., LTD.Inventors: Yang Luo, Hongwei Li, Dunbo Yu, Kuoshe Li, Wenlong Yan, Jiajun Xie, Shuai Lu
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Patent number: 9851128Abstract: A heat pump system is provided that uses MCM to provide for heating or cooling. The heat pump is constructed from a continuously rotating regenerator where MCM is cycled in and out of a magnetic field in a continuous manner. A heat transfer fluid is circulated therethrough to provide for heat transfer in a cyclic manner. The MCM may include stages having different Curie temperature ranges. A field of varying magnetic flux may be used. The rotating regenerator can be equipped with one or more gaskets to improve fluid seals between the rotating regenerator and stationary parts. An appliance using such a heat pump system is also provided. The heat pump may also be used in other applications for heating, cooling, or both.Type: GrantFiled: April 22, 2014Date of Patent: December 26, 2017Assignee: Haier US Appliance Solutions, Inc.Inventors: Michael Alexander Benedict, David G. Beers
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Patent number: 9809460Abstract: An electrically conductive thin film including a compound represented by Chemical Formula 1 and having a layered crystal structure Re2C??Chemical Formula 1 wherein Re is a lanthanide. Also an electronic device including the electrically conductive thin film.Type: GrantFiled: June 25, 2015Date of Patent: November 7, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hee Jung Park, Yoon Chul Son, Doh Won Jung, Woojin Lee, Jae-Young Choi
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Patent number: 9773876Abstract: An amorphous semiconductor composition includes 1 to 70 atomic percent iron, 15 to 65 atomic percent dysprosium, 15 to 35 atomic percent terbium, balance X, wherein X is at least one of an oxidizing element and a reducing element. The composition has an essentially amorphous microstructure, an optical transmittance of at least 50% in at least the visible spectrum and semiconductor electrical properties.Type: GrantFiled: June 28, 2016Date of Patent: September 26, 2017Assignee: UT-Battelle, LLCInventors: Raphael C. Pooser, Benjamin J. Lawrie, Arthur P. Baddorf, Abhinav Malasi, Humaira Taz, Annettee E. Farah, Ramakrishnan Kalyanaraman, Gerd Josef Mansfred Duscher, Maulik K. Patel
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Patent number: 9765996Abstract: A regenerative refrigerator of a single stage type or a multistage type includes: a cylinder having a cooling stage and a cylinder side wall axially extending from the cooling stage; a displacer having a regenerator provided at the same stage as the cooling stage and a displacer side wall axially extending to face the cylinder side wall, and axially movably disposed in the cylinder; and a low temperature-side gas flow path making a gas expansion space between the displacer and the cooling stage communicate with a low-temperature end of the regenerator and having a gas flow gap between the displacer side wall and the cylinder side wall, and a displacer gas passage making the gas flow gap communicate with the low-temperature end of the regenerator and having a gap-side opening provided further toward a high temperature side than the low-temperature end of the regenerator.Type: GrantFiled: March 4, 2015Date of Patent: September 19, 2017Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.Inventor: Takaaki Matsui
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Patent number: 9657971Abstract: The invention provides a first-order phase-transition La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss, and preparation and use thereof. The material has a NaZn13-type structure, is composed of granules with a particle size in the range of 15˜200 ?m and not less than 15 ?m, and is represented by chemical formula La1-xRx(Fe1-p-qCopMnq)13-ySiyA?. The method for preparing the material comprises steps of preparing the material La1-xRx(Fe1-p-qCopMnq)13-ySiyA? by smelting and annealing; and then crushing the material into powder with a particle size in the range of 15˜200 ?m. Without changing the components, a La(Fe,Si)13-based magnetocaloric material showing small hysteresis loss and strong magnetocaloric effect can be obtained by adjusting the particle size within the range of 15˜200 ?m. Utilization of this type of materials in the practical magnetic refrigeration application is of great significance.Type: GrantFiled: October 24, 2012Date of Patent: May 23, 2017Assignees: INSTITUTE OF PHYSICS, CHINESE ACADEMY OF SCIENCES, HUBEI QUANYANG MAGNETIC MATERIALS MANUFACTURING CO., LTD.Inventors: Fengxia Hu, Ling Chen, Jing Wang, Lifu Bao, Rongrong Wu, Baogen Shen, Jirong Sun, Huayang Gong
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Patent number: 9548150Abstract: New magnetic materials containing cerium, iron, and small additions of a third element are disclosed. These materials comprise compounds Ce(Fe12?xMx) where x=1-4, having the ThMn12 tetragonal crystal structure (space group I4/mmm, #139). Compounds with M=B, Al, Si, P, S, Sc, Co, Ni, Zn, Ga, Ge, Zr, Nb, Hf, Ta, and W are identified theoretically, and one class of compounds based on M=Si has been synthesized. The Si cognates are characterized by large magnetic moments (4?Ms greater than 1.27 Tesla) and high Curie temperatures (264?Tc?305° C.). The Ce(Fe12?xMx) compound may contain one or more of Ti, V, Cr, and Mo in combination with an M element. Further enhancement in Tc is obtained by nitriding the Ce compounds through heat treatment in N2 gas while retaining the ThMn12 tetragonal crystal structure; for example CeFe10Si2N1.29 has Tc=426° C.Type: GrantFiled: March 6, 2013Date of Patent: January 17, 2017Assignee: GM Global Technology Operations LLCInventors: Chen Zhou, Frederick E. Pinkerton, Jan F. Herbst
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Patent number: 9435012Abstract: Provided are a method for producing powder for a magnet, and methods for producing a powder compact, a rare-earth-iron-based alloy material, and a rare-earth-iron-nitrogen-based alloy material. Magnetic particles constituting the powder each have a texture in which grains of a phase of a hydride of a rare-earth element are dispersed in a phase of an iron-containing material. The uniform presence of the phase of the iron-containing material in each magnetic particle results in powder having excellent formability, thereby providing a powder compact having high relative density. The powder is produced by heat-treating rare-earth-iron-based alloy powder in a hydrogen atmosphere to separate the rare-earth element and the iron-containing material and then forming a hydride of the rare-earth element. The powder is compacted. The powder compact is heat-treated in vacuum to form a rare-earth-iron-based alloy material.Type: GrantFiled: December 22, 2015Date of Patent: September 6, 2016Assignee: Sumitomo Electric Industries, Ltd.Inventor: Toru Maeda
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Patent number: 9245673Abstract: A magnetocaloric cascade containing at least three different magnetocaloric materials with different Curie temperatures, which are arranged in succession by descending Curie temperature, wherein none of the different magnetocaloric materials with different Curie temperatures has a higher layer performance Lp than the magnetocaloric material with the highest Curie temperature and wherein at least one of the different magnetocaloric materials with different Curie temperatures has as lower layer performance Lp than the magnetocaloric material with the highest Curie temperature wherein Lp of a particular magnetocaloric material being calculated according to formula (I): Lp=m*dTad,max with dTad,max: maximum adiabatic temperature change which the particular magnetocaloric material undergoes when it is magnetized from a low magnetic field to high magnetic field during magnetocaloric cycling, m: mass of the particular magnetocaloric material contained in the magnetocaloric cascade.Type: GrantFiled: January 23, 2014Date of Patent: January 26, 2016Assignee: BASF SEInventors: Colman Carroll, Olaf Rogge, Bernard Hendrik Reesink, Andrew Rowe, Danny Arnold, Armando Tura
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Patent number: 9143041Abstract: A magnetic circuit for a non-contact charging apparatus comprising a coil, a coil yoke disposed on the rear surface side of the coil, and a magnetic attraction means disposed in a hole of the coil yoke with a magnetic gap in plane and/or thickness directions.Type: GrantFiled: February 7, 2011Date of Patent: September 22, 2015Assignee: HITACHI METALS, LTD.Inventors: Hiromitsu Itabashi, Yoshiyuki Moriyama
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Patent number: 9044810Abstract: A rare earth magnet is prepared by disposing a R1-T-B sintered body comprising a R12T14B compound as a major phase in contact with an R2-M alloy powder and effecting heat treatment for causing R2 element to diffuse into the sintered body. The alloy powder is obtained by quenching a melt containing R2 and M. R1 and R2 are rare earth elements, T is Fe and/or Co, M is selected from B, C, P, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Zr, Nb, Mo, Ag, In, Sn, Sb, Hf, Ta, W, Pt, Au, Pb, and Bi.Type: GrantFiled: June 29, 2010Date of Patent: June 2, 2015Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Tadao Nomura, Hiroaki Nagata, Takehisa Minowa
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Publication number: 20140345751Abstract: A non-oriented electrical steel sheet has a chemical composition including, in mass %, C: 0.005% or less, Si: 5% or less, Al: 3% or less, Mn: 5% or less, S: 0.005% or less, P: 0.2% or less, N: 0.005% or less, Mo: 0.001 to 0.04%, Ti: 0.0030% or less, Nb: 0.0050% or less, V: 0.0050% or less, Zr: 0.0020% or less, one or both of Sb and Sn: 0.001 to 0.1% in total, and the balance being iron and incidental impurities.Type: ApplicationFiled: September 26, 2012Publication date: November 27, 2014Inventors: Yoshihiko Oda, Hiroaki Toda, Tadashi Nakanishi, Yoshiaki Zaizen
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Patent number: 8854173Abstract: An Fe-based amorphous alloy powder of the present invention has a composition represented by (Fe100-a-b-c-x-y-z-tNiaSnbCrcPxCyBzSit)100-?M?. In this composition, 0 at %?a?10 at %, 0 at %?b?3 at %, 0 at %?c?6 at %, 6.8 at %?x?10.8 at %, 2.2 at %?y?9.8 at %, 0 at %?z?4.2 at %, and 0 at %?t?3.9 at % hold, a metal element M is at least one selected from the group consisting of Ti, Al, Mn, Zr, Hf, V, Nb, Ta, Mo, and W, and the addition amount ? of the metal element M satisfies 0.04 wt %???0.6 wt %. Accordingly, besides a decrease of a glass transition temperature (Tg), an excellent corrosion resistance and high magnetic characteristics can be obtained.Type: GrantFiled: July 15, 2013Date of Patent: October 7, 2014Assignee: Alps Green Devices Co., Ltd.Inventors: Keiko Tsuchiya, Jun Okamoto, Hisato Koshiba
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Patent number: 8808468Abstract: The invention relates to a Fe—Si—La alloy having the atomic composition: (La1-a-a?MmaTRa?)1[(Fe1-b-b?CObMb?)1-x(Si1-cXc)x]13(CdNeH1-d-e)y(R)z(I)f Mm representing a mixture of lanthanum, cerium, neodymium and praseodynium in the weight proportion of 22 to 26% La, 48 to 53% Ce, 17 to 20% Nd and 5 to 7% Pr, the said mixture possibly comprising up to 1% by weight of impurities, TR representing one or more elements of the rare earth family other than lanthanum, M representing one or more type d transition elements of the 3d, 4d and 5d layers X representing a metalloid element selected from Ge, Al, B, Ga and In R representing one or more elements selected from Al, Ca, Mg, K and Na, I representing one or two elements selected from O and S, with: 0?a<0.5 and 0?a?<0.2 0?b?0.2 and 0?b?<0.4 0?c?0.5 and 0?d?1 0?e?1 and f?0.1 0.09?x?0.13 and 0.002?y?4 0.0001?z?0.01 the subscripts b, d, e, x and y being such that the alloy further satisfies the following condition: 6.143b(13(1?x))+4.437y[1?0.Type: GrantFiled: December 15, 2008Date of Patent: August 19, 2014Assignee: Aperam Alloys ImphyInventors: Thierry Waeckerle, Herve Fraisse, Mohamed Balli, Patricia De Rango, Daniel Fruchart, Damien Gignoux, Salvatore Miraglia, Mariana Rosca, Miguel Jose Artigas Alava
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Patent number: 8764917Abstract: A ferromagnetic compound magnet in accordance with the present invention includes a ferromagnetic compound based on a binary alloy containing R—Fe system (R is a 4f transition element or Y) or a ternary allay containing R—Fe-T system (R is a 4f transition element or Y, and T is a 3d transition element except for Fe, or Mo, Nb or W), the ferromagnetic compound being characterized by: atomic percentage of the element R to the element Fe or to the elements Fe and T is 15% or lower; an element F is incorporated into an interstitial position in a crystal lattice of the alloy. The ferromagnetic compound is expressed in a chemical formula of: R2Fe17Fx; R2(Fe,T)17Fx; R3Fe29Fy; R3(Fe,T)29Fy; RFe12Fz; or R(Fe,T)12Fz (0<x?3, 0<y?4, 0<z?1).Type: GrantFiled: November 30, 2010Date of Patent: July 1, 2014Assignee: Hitachi, Ltd.Inventors: Hiroyuki Suzuki, Matahiro Komuro, Yuichi Satsu, Takao Imagawa
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Patent number: 8641832Abstract: An objective of the present invention is to provide a method for producing a rare earth metal-based permanent magnet having an Al film containing Mg, which exhibits an excellent salt water resistance. The present invention, which is to accomplish the objective, is a method for producing a rare earth metal-based permanent magnet having formed on the surface thereof an Al film containing Mg by a vapor deposition, characterized in that the production method comprises, in the case of cooling the magnet from a high temperature of 160° C. or higher after the completion of the vapor deposition step inside the treating chamber of a deposition apparatus, rapidly cooling down the magnet at a cooling rate of 10° C./min or higher until the temperature of the magnet reaches at least 60° C.Type: GrantFiled: March 30, 2007Date of Patent: February 4, 2014Assignee: Hitachi Metals, Ltd.Inventors: Atsushi Kikugawa, Shinichiro Sakashita
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Publication number: 20130315775Abstract: A rare earth magnet production method of the present invention includes a placing step of placing a magnet material including a compact or a sintered body of powder particles having a rare earth magnet alloy, and a diffusing material containing a diffusing element to improve coercivity, in a vicinity of each other; and a diffusing step of diffusing the diffusing element into an inside of the magnet material by exposing the magnet material heated to vapor of the diffusing element evaporated from the diffusing material heated; and wherein the diffusing step is a step of heating the diffusing material independently of the magnet material to diffusing material temperature which is different from heating temperature of the magnet material called magnet material temperature.Type: ApplicationFiled: February 13, 2012Publication date: November 28, 2013Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Yuji Kaneko, Hisaaki Takao, Yukio Takada, Motoki Hiraoka, Keiu Kanada
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Patent number: 8551210Abstract: A composite article (1; 10; 40) comprises a plurality of inclusions (5) of a magnetocalorically active material embedded in a matrix (4) of a magnetocalorically passive material. The inclusions (5) and the matrix (4) have a microstructure characteristic of a compacted powder.Type: GrantFiled: December 27, 2007Date of Patent: October 8, 2013Assignee: Vacuumschmelze GmbH & Co. KGInventors: Georg Werner Reppel, Matthias Katter
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Patent number: 8439998Abstract: In sintering a metal powder after pressure molding into a given configuration, random amorphous flaky metal fine powders (10) are used as metal powder materials. In addition, spherical particulate metal powders 11 are used as main materials, and random amorphous flaky metal fine powders 10 having finer particle size than the metal powders 11 and produced by fracturing a metal fracture material by means of high-velocity gas swirling flow are used as sub-materials, and molding and sintering are performed in a state of dispersing the sub-materials (10) in the main materials (11). Thus, despite being a power metallurgical product, it is possible to obtain a metal product having a dense metallographic structure and excellent in properties such as mechanical strength.Type: GrantFiled: December 2, 2005Date of Patent: May 14, 2013Assignees: Sunrex Kogyo Co., Ltd., Nanopulus Co., Ltd., Ace Giken Co., Ltd.Inventors: Kenzo Ito, Masahiro Yamamoto, Etsuo Yamamoto
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Patent number: 8424314Abstract: The present invention relates to new intermetallic compounds having a crystalline structure of Ni3Sn2 type for the magnetic refrigeration, their use and a process for preparing the same. The present invention further relates to new magnetocaloric compositions for the magnetic refrigeration and their use.Type: GrantFiled: March 27, 2009Date of Patent: April 23, 2013Assignee: Universite Henri Poincare Nancy 1Inventor: Thomas Mazet
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Patent number: 8388769Abstract: To mold a high-resistance magnet at low temperature, including room temperature, the magnet includes magnetic powders, metallic powders having a lower hardness than the magnetic powders and a high-resistance layer, wherein the magnetic powders occupy a larger volume than the metallic powders. In particular, the high-resistance layer contains a fluorine compound and is placed between the magnetic powder and the metallic powders.Type: GrantFiled: December 19, 2006Date of Patent: March 5, 2013Assignee: Hitachi, Ltd.Inventors: Matahiro Komuro, Yuichi Satsu, Takashi Yasuhara
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Patent number: 8350430Abstract: An R—Fe—B sintered magnet has a structure including main phase crystal grains and a grain boundary area surrounding the crystal grains. The sintered magnet includes fluorine and a specified metal element selected from elements belonging to Group 2 through Group 16 of periodic table excepting the rare earth element, carbon and boron. The fluorine has a higher concentration in a region closer to a magnet surface than in the center. The specified element also has a higher concentration in the region closer to the surface. The sintered magnet includes oxyfluoride containing carbon, Dy and the metal element in a grain boundary area region at a distance of 1 ?m or greater from the magnet surface, and the carbon has a higher concentration than the concentration of the metal element in a region at a distance of 1 ?m to 500 ?m from the magnet surface.Type: GrantFiled: April 23, 2012Date of Patent: January 8, 2013Assignee: Hitachi, Ltd.Inventors: Matahiro Komuro, Yuichi Satsu, Yoshii Morishita, Shigeaki Funyu, Mitsuo Katayose