Permanent-magnet alloy
US4322257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1979 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | May 21, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/0557
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Permanent-magnet alloys having the general formula EQU RE(Co.sub.l-u-v-w-x-y Fe.sub.u Mn.sub.v Cr.sub.w V.sub.x X.sub.y).sub.z wherein Re is samarium, cerium, cerium mischmetal (MM), praseodymium, neodymium, lanthanum or mixtures thereof, X is Al, Cu or mixture thereof, and ______________________________________ 0.05 < u < 0.15 0.084 .ltoreq. u < 0.15 0.003 .ltoreq. v < 0.15 0.02 < v < 0.15 0.003 .ltoreq. w < 0.10 0 = w 0.003 .ltoreq. x < 0.10 0 = x 0.05 < y < 0.20 0.05 < y < 0.20 6.5 < z .ltoreq. 8.5 6.5 < z .ltoreq. 8.5 0.084 .ltoreq. u < 0.15 0.05 < u < 0.15 0 = v 0.02 < v < 0.15 0.02 < x < 0.10 0.02 < w < 0.10 0 = w 0.02 < x < 0.10 0.05 < y < 0.20 0.05 < y < 0.20 6.5 < z .ltoreq. 8.5 6.5 < z .ltoreq. 8.5 ______________________________________
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.