WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO2013125600) SINTERED FERRITE MAGNET AND MOTOR PROVIDED THEREWITH
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2013/125600    International Application No.:    PCT/JP2013/054230
Publication Date: 29.08.2013 International Filing Date: 20.02.2013
IPC:
H01F 1/11 (2006.01), H01F 41/02 (2006.01)
Applicants: TDK CORPORATION [JP/JP]; 3-9-1, Shibaura, Minato-ku, Tokyo 1080023 (JP)
Inventors: TAGUCHI Hitoshi; (JP)
Agent: HASEGAWA Yoshiki; SOEI PATENT AND LAW FIRM, Marunouchi MY PLAZA (Meiji Yasuda Life Bldg.) 9th fl., 1-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1000005 (JP)
Priority Data:
2012-034039 20.02.2012 JP
Title (EN) SINTERED FERRITE MAGNET AND MOTOR PROVIDED THEREWITH
(FR) AIMANT FRITTÉ EN FERRITE AINSI QUE MOTEUR METTANT EN OEUVRE CELUI-CI
(JA) フェライト焼結磁石及びそれを備えるモータ
Abstract: front page image
(EN)The present invention provides a sintered ferrite magnet (10) that contains strontium ferrite having a hexagonal crystal structure. Expressed in terms of Na2O and K2O, the combined sodium and potassium content of said sintered ferrite magnet (10) is 0.004-0.31% by mass; expressed in terms of SiO2, the silicon content is 0.3-0.94% by mass; and the sintered ferrite magnet (10) satisfies relation (1). (1) 1.3 ≤ (SrF+Ba+Ca+2Na+2K) ≤ 5.7 (In relation (1), SrF represents the amount of strontium, on a molar basis, other than the strontium constituting the strontium ferrite, and Ba, Ca, Na, and K each represent the molar-basis amount of the respective element.)
(FR) L'invention concerne un aimant fritté (10) en ferrite contenant de la ferrite Sr ayant une structure cristalline hexagonale. Plus spécifiquement, dans cet aimant fritté (10) en ferrite, la teneur totale de Na et K, convertis respectivement en Na2O et K2O, est comprise entre 0,004 et 0,31 % en masse, et la teneur en Si, converti en SiO2, est comprise entre 0,3 et 0,94 % en masse. Cet aimant fritté (10) en ferrite, satisfait en outre la formule ci-dessous (1): (1) 1,3 ≦ (SrF+Ba+Ca+2Na+2K) ≦ 5,7. Dans cette formule (1), SrF représente la quantité en moles de Sr, excepté Sr de la ferrite, et Ba, Ca, Na et K représentent respectivement la quantité en moles des éléments respectifs.
(JA) 本発明は、六方晶構造を有するSrフェライトを含有するフェライト焼結磁石10であって、Na及びKの合計含有量が、NaO及びKOにそれぞれ換算して、0.004~0.31質量%、及びSiの含有量がSiO換算で0.3~0.94質量%、であり、下記式(1)を満たすフェライト焼結磁石10を提供する。 1.3≦(Sr+Ba+Ca+2Na+2K)≦5.7 (1) [式(1)中、Srは、Srフェライトを構成するSrを除いたSrのモル基準の含有量であり、Ba,Ca,Na及びKは、それぞれの元素のモル基準の含有量を示す。]
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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, 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, 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, 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, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)