Acicular magnetic iron based alloy particles for magnetic record

Details Acicular magnetic iron based alloy particles for magnetic record Acicular magnetic iron based alloy particles for magnetic record

1991-07-08

1992-10-20

Sheehan, John P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite powder

148105, 148306, 148307, 148309, 148310, 420 77, 420 78, 420 80, 420 95, 420 98, 420103, 420117, 420119, 420121, B22F 102

Patent

active

051569221

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.

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