Acicular magnetic iron based alloy particles for magnetic recording and method of producing the same
US5156922A · kind A · utility
16Cited by
14References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Jul 8, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12181
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are acicular magnetic iron based alloy particles for magnetic recording, containing 1.5 to 10 mol % of B based on Fe (calculated as B) and 1.5 to 10 mol % of Co based on Fe (calculated as Co) in the vicinity of the surfaces of said particles and having a saturation magnetization of not less than 125 emu/g and an S.F.D. value of not more than 0.50, and a process for producing the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.