Title:
磁気異方性ボンド磁石
Document Type and Number:
Japanese Patent JP3587158
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a magnetically anisotropic bonded magnet constituted of rare earth magnet powder having high anisotropy which is subjected to high-temperature hydrogen heat treatment and thermosetting resin. SOLUTION: A rare earth element (to be referred to as R in the following) is subjected to high temperature hydrogen heat treatment, has anisotropy (Br/Bs where Bs is 1.6 T (16 kG))of at least 0.70, and contains yttrium (Y). RFeB alloy consists of R, boron (B), inevitable impurities, and iron (Fe) as the residue. The rare earth magnet powder consists of RFe(Ga+Nb)B alloy, which contains RFeB alloy, gallium(Ga) and niobium(Nb). The magnetically anisotropic bonded magnet consists of the rare earth magnet powder and thermosetting resin and has a maximum energy product of at least 135 kJ/m3 can be obtained.
Inventors:
Yoshinobu Honzo
Chisato Mishima
Hironari Mitarai
Chisato Mishima
Hironari Mitarai
Application Number:
JP2000319447A
Publication Date:
November 10, 2004
Filing Date:
October 19, 2000
Export Citation:
Assignee:
Aichi Steel Co., Ltd.
International Classes:
B22F1/00; B22F3/00; C21D6/00; C22C38/00; H01F1/057; H01F1/08; (IPC1-7): H01F1/08; B22F1/00; B22F3/00; C21D6/00; C22C38/00
Domestic Patent References:
| JP7278615A | ||||
| JP7076754A | ||||
| JP7076708A | ||||
| JP1204401A | ||||
| JP8148315A | ||||
| JP7074012A | ||||
| JP8167513A | ||||
| JP7176417A | ||||
| JP7122416A | ||||
| JP3463911B2 |
Foreign References:
| WO1994015345A1 |