Magnetic head alloy material and method of producing the same

Details Magnetic head alloy material and method of producing the same Magnetic head alloy material and method of producing the same

1984-06-12

1986-04-08

Sheehan, John P.

Metal treatment

Compositions

Heat treating

75123B, 75123C, 75123H, 75123J, 75123L, C04B 3500

Patent

active

045810800

ABSTRACT:
An alloy material for magnetic head which ensures, when formed into a head, reduced distortion during writing and reduced level of noises such as sliding noise, while presenting high wear resistance.
The alloy material is produced by preparing a molten alloy having a basic composition consisting essentially of Fe and 4 to 8 wt % of Si, and further containing one or more than two additive element or elements selected from a group consisting of elements belonging in periodic table to groups IIA, IVB, VB, VIB, VIIB, VIII, IB, IIB, IIIA, IVA and VA. The molten alloy is then quenched at a high cooling rate of at least 10.sup.3 .degree.C./sec to become a thin sheet having a thickness ranging between 0.02 mm and 0.3 mm. The sheet is then heat-treated in a non-oxidizing atmosphere at 600.degree. to 1200.degree. C. for 0.01 to 20 hours, so that the mean grain size of 0.2 mm or smaller can be obtained.

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