Process for producing magnets having improved corrosion resistance
US5316595A · kind A · utility
20Cited by
0References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1991 |
| Grant date | May 31, 1994 |
| Priority date | — |
| Expiry date | Aug 5, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0577
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.