Title: Process for producing magnets having improved corrosion resistance
Application Number: 85109695 Application Date: 1985.12.24
Publication Number: 1003768 Publication Date: 1986.10.01
Approval Pub. Date: 1991.01.16 Granted Pub. Date: 1991.01.16
International Classifi-cation: C23C14/00;C23C16/00;H01F1/04;H01F7/02
Applicant(s) Name: Sumitomo Special Metals Co., Ltd. Address:
Inventor(s) Name: Takaki Hamada;Tetsuji Hayakawa;Yutaka Matsuura
Attorney & Agent: LU XINHUA
Abstract:
    Fe-B-R type permanent magnet is produced by: forming an anticorrosive coating film layer on a Fe-B-R base permanent magnet material body by means of vapor deposition to thereby improve the corrosion resistance thereof. The anticorrosive thin film is formed of metal, oxides, nitrides, carbides, borides, silicides, composite compositions thereof, or a mixture thereof. Additionally blasting, shot peening, heat treatment for forming an interdiffusion layer, and/or resin impregnation may be applied.
Time: 5