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1. (WO2018079755) RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/079755    International Application No.:    PCT/JP2017/039015
Publication Date: 03.05.2018 International Filing Date: 27.10.2017
IPC:
H01F 1/057 (2006.01), B22F 1/00 (2006.01), B22F 3/00 (2006.01), B22F 3/10 (2006.01), B22F 3/24 (2006.01), C21D 6/00 (2006.01), H01F 41/02 (2006.01), C22C 38/00 (2006.01)
Applicants: IHI CORPORATION [JP/JP]; 1-1, Toyosu 3-chome, Koto-ku, Tokyo 1358710 (JP)
Inventors: YONEYAMA, Nausuki; (JP).
EGUCHI, Haruki; (JP).
BANNO, Hidekazu; (JP).
NAKANOWATARI, Isao; (JP).
NAGAO, Keisuke; (JP)
Agent: OHGA, Shinji; (JP).
HYAKUMOTO, Hiroyuki; (JP)
Priority Data:
2016-212359 28.10.2016 JP
Title (EN) RARE-EARTH PERMANENT MAGNET AND METHOD FOR MANUFACTURING RARE-EARTH PERMANENT MAGNET
(FR) AIMANT PERMANENT À BASE DE TERRES RARES ET PROCÉDÉ DE FABRICATION D'UN AIMANT PERMANENT À BASE DE TERRES RARES
(JA) 希土類永久磁石および希土類永久磁石の製造方法
Abstract: front page image
(EN)A rare-earth permanent magnet is provided with a main phase which contains: one or more rare-earth elements R including Nd; one or more elements L selected from the group consisting of Co, Be, Li, Al, and Si; B; and Fe. A crystal forming the main phase belongs to P42/mnm. Some B atoms occupying the 4f site in the crystal are substituted with the atoms of element L. Distributions of the Nd atoms and the atoms of element L appear respectively with a plurality of periods along the C-axis direction of the crystal. The rare-earth permanent magnet is provided with an area in which the period of the atoms of element L and the period of the atoms of Nd coincide.
(FR)L'invention concerne un aimant permanent de terres rares comprenant une phase principale qui contient : un ou plusieurs éléments de terres rares R comprenant Nd; un ou plusieurs éléments L choisis dans le groupe constitué par Co, Be, Li, Al et Si; B; et Fe. Un cristal formant la phase principale appartient à P42/mnm. Certains atomes de B occupant le site 4f dans le cristal sont substitués par les atomes de d'élément L. Des distributions des atomes Nd et les atomes d'élément L apparaissent respectivement avec une pluralité de périodes le long de la direction d'axe C du cristal. L'aimant permanent de terres rares comprend une zone dans laquelle la période des atomes d'élément L et la période des atomes de Nd coïncident.
(JA)Ndを含む一種以上の希土類元素Rと、CoとBeとLiとAlとSiとからなる群から一種以上選択される元素Lと、Bと、Feとを含有する主相を備え、前記主相を形成する結晶がP42/mnmに属し、前記結晶の4fサイトを占有するB原子の一部が元素Lの原子と置換され、Nd原子と元素Lの原子との分布がそれぞれ前記結晶のC軸方向に沿って複数の周期で現れ、元素Lの原子の周期とNdの原子の周期とが一致する領域を備える希土類永久磁石である。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)