Acicular alloy magnetic powder

Details Acicular alloy magnetic powder Acicular alloy magnetic powder

1991-05-16

1993-11-09

Resan, Stevan A.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

252 6255, 428694BA, 428900, 148105, 148306, 148307, 148310, 148311, 75348, 75369, 106403, B32B 100, G11B 500

Patent

active

052601323

ABSTRACT:
An acicular alloy base magnetic powder comprising iron and cobalt, which has an average particle long axis size of not larger than 0.25 .mu.m, an axial ratio of from 4 to 8, a cobalt content of from 8 to 50% by weight based on the weight of iron and saturation magnetization of at least 120 emu/g after being kept standing at the temperature of 60.degree. C. and relative humidity of 90% for a week, which has improved corrosion resistance and can provide a magnetic recording medium suitable for recording in the short wavelength range.

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patent: 4895758 (1990-01-01), Sakemoto et al.
patent: 5151115 (1992-09-01), Tamai

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