Cerium misch-metal/cobalt magnets
US4087291A · kind A · utility
4Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1977 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Jun 17, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0557
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A permanent magnetic material, predominantly containing cerium misch-metal (CeMM) and cobalt, characterized by the composition: PA1 (CeMM.sub.1-x RE.sub.x).sub.1 -y Sm.sub.y Co.sub.5.+-.0.2 Wherein PA1 0<x<0.5; 0.ltoreq.y.ltoreq.0.25, Re comprises at least one of the rare earths, cerium, lanthanum, neodymium and praseodymium, and the cerium misch-metal approximately possesses the composition PA1 Ce.sub.60 La.sub..beta. Nd.sub..gamma. Pr.sub..delta., Wherein PA1 0.45<.alpha.<0.55 PA1 0.20<.beta.<0.40 PA1 0.05<.gamma.<0.15 PA1 0.00<.delta.<0.05 And PA1 .alpha.+.beta.+.gamma.+.delta..perspectiveto.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.