Amorphous magnetic alloy material

Details Amorphous magnetic alloy material Amorphous magnetic alloy material

1981-09-10

1983-11-22

Sheehan, John P.

Metal treatment

Stock

Amorphous, i.e., glassy

420440, 420583, 420584, 420585, 420586, 148 3155, C22C 1900

Patent

active

044167091

ABSTRACT:
The present invention relates to an amorphous magnetic alloy material suited for use as a core material of a magnetic head.
When the magnetic head is subjected to a slide contact with a magnetic tape over a long period of time, a film of oxide and the like is formed on the surface of an amorphous magnetic alloy material due to chemically corrosive media frequently contained in the magnetic coating layer of the magnetic tape or due to carbon dioxide, water and the like contained in the air.
The amorphous magnetic alloy material of the present invention is highly corrosion resistant due to the combination of chromium and platinum family element(s), and, the inconveniences in a magnetic head, due to chemical wear, can be prevented even where the magnetic head is operated or stored in a considerably severe condition.

REFERENCES:
patent: 4052201 (1977-10-01), Polk et al.
patent: 4067732 (1978-01-01), Ray
patent: 4079430 (1978-03-01), Fujishima et al.
patent: 4187128 (1980-02-01), Billings et al.
patent: 4188211 (1980-02-01), Yamaguchi et al.
patent: 4225339 (1980-09-01), Inomata et al.
The Condensed Chemical Dictionary, 8th ed., 1971, p. 213.
Zairyo Kagakw (Material Science) 15(4), 1978, pp. 207-214.

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