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

1992-07-29

1993-08-24

Sheehan, John P.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or purifying free metal powder or producing or...

B22F 900

Patent

active

052384837

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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