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Title:
PRODUCTION OF PERMANENT MAGNET ALLOY
Document Type and Number:
Japanese Patent JPH07118787
Kind Code:
A
Abstract:

PURPOSE: To obtain a permanent magnet alloy for thin product use, in which deterioration in magnetic properties does not occur even if at least one principal plane is worked by grinding, etc., and thickness is reduced, by compacting a powder in which the atomic composition of material is specified and then sintering the resulting green compact.

CONSTITUTION: A powder, which has a composition containing, by atom, 0.05-3.0% of at least one kind among borides and also containing, as essential components, 10-24% R (Where R consists of at least one element among Nd, Pr, Dy, Ho and Tb, or consists of one or more elements among them and further at least one element among La, Ce, Sm, Gd, Er, Eu, Tm, Yb, La, and Y), 4-24% B, and 65-81% Fe, is sintered. By this method, the permanent magnet alloy for thin product use, free from deterioration in magnetic properties even if one principal plane of sintered magnet is worked, e.g. by grinding, can be obtained.


Inventors:
FUJIMURA SETSUO
YAMAMOTO HITOSHI
MATSUURA YUTAKA
HIROZAWA SATORU
SAGAWA MASATO
Application Number:
JP9837193A
Publication Date:
May 09, 1995
Filing Date:
April 02, 1993
Export Citation:
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Assignee:
SUMITOMO SPEC METALS
International Classes:
C22C33/02; C22C38/00; C22C38/60; H01F1/053; H01F1/057; H01F1/08; H01F41/02; (IPC1-7): C22C33/02; C22C38/00; C22C38/60; H01F1/053; H01F1/08; H01F41/02
Attorney, Agent or Firm:
Asato Kato



 
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