Title:
アトマイズ法によるナノコンポジット磁石の製造方法
Document Type and Number:
Japanese Patent JP4055709
Kind Code:
B2
Abstract:
Iron-based rare earth alloy nanocomposite magnetic powder is produced by an atomization method, and contains >=2 ferromagnetic crystal phases. The average size of the hard crystal phase is 10-200nm and the average size of the soft magnetic phase is 1-100nm. The powder has the composition (Fe 1-mT m) 100-x-y-z-nQ xR yTi zM n. T : Co and/or Ni; Q : B and/or C; R : rare earth metal and/or yttrium; M : Nb, Zr, Mo, Ta and/or Hf; x : 10-25 atom%; y : 6-10 atom%; z : 0.1-12 atom%; m : 0-0.5; n : 0-10 atom%. Independent claims are also included for (1) a bonded magnet containing the powder; (2) the manufacture of the powder; and (3) the manufacture of the bonded magnet.
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Inventors:
Toshio Miyoshi
Hirokazu Kinsei
Satoshi Hirosawa
Hirokazu Kinsei
Satoshi Hirosawa
Application Number:
JP2003517890A
Publication Date:
March 05, 2008
Filing Date:
July 19, 2002
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
H01F1/06; H01L23/12; B22F1/00; B22F3/00; B22F9/00; B22F9/08; C21D6/00; C22C1/04; C22C33/02; C22C38/00; C22C38/12; C22C38/14; H01B1/22; H01F1/053; H01F1/057; H01F1/058; H01L21/56; H01L23/31; H01L23/498; H01L25/065; H01L25/10; H01L25/11; H01L25/18; H05K1/09; H05K3/40
Domestic Patent References:
| JP4098802A | ||||
| JP2000348919A | ||||
| JP2001060504A | ||||
| JP10053844A | ||||
| JP63313807A | ||||
| JP11097222A | ||||
| JP11288807A | ||||
| JP3261104A | ||||
| JP2298003A | ||||
| JP2001267162A | ||||
| JP2001244107A |
Attorney, Agent or Firm:
Seiji Okuda