Title:
R-T-B-M ANISOTROPIC MAGNETIC POWDER AND ITS MANUFACTURE
Document Type and Number:
Japanese Patent JP3649291
Kind Code:
B2
Abstract:
PURPOSE: To provide magnetic powder high in coercive force and excellent in magnetic anisotropy easily and stably by performing plastic processing besides hydrogen occlusion processing and dehydrogen processing, or repeating hydrogen occlusion processing and dehydrogen processing several times.
CONSTITUTION: This is R-T-B anisotropic magnetic powder which has R2T14B(R: rare earth metal including Y, T: transition metal) 0.02-5μm in average crystal grain diameter for its main phase, and in which the quantity of magnetization in the direction of an axis where the magnetization is easy is 130emu/g or over, and the quantity of magnetization in the direction of an axis where the magnetization is hard is 60emu/g or under.
Inventors:
Katsunori Iwasaki
Endo Minoru
Masaaki Tokunaga
Endo Minoru
Masaaki Tokunaga
Application Number:
JP1543393A
Publication Date:
May 18, 2005
Filing Date:
February 02, 1993
Export Citation:
Assignee:
Neomax corporation
International Classes:
C22C38/00; H01F1/053; H01F1/057; H01F1/06; H01F1/08; B22F1/00; (IPC1-7): H01F1/06; B22F1/00; C22C38/00; H01F1/053; H01F1/08
Domestic Patent References:
| JP6445103A | ||||
| JP6390104A | ||||
| JP3222304A | ||||
| JP3295202A | ||||
| JP4192505A | ||||
| JP3160705A | ||||
| JP4371539A |