Bias material, magnetic marker and method of producing the bias

Details Bias material, magnetic marker and method of producing the bias Bias material, magnetic marker and method of producing the bias

1998-04-29

1999-12-14

Sheehan, John

Metal treatment

Stock

Magnetic

420 82, 420 89, 340572, H01F 1047

Patent

active

060011947

ABSTRACT:
A bias material for magnetic markers is produced by plastic working to provide a strip form, which has a metal structure consisting of the iron-base matrix and a non-magnetic copper group metal phase in an amount of not less than a solubility limit thereof in an equilibrium state at a room temperature. The non-magnetic copper group metal phase is dispersed in the matrix so as to form a microstructural rod pattern. The bias material comprises preferably 3 to 35% wt % of a copper group metal. The magnetic marker is produced by combining the bias material and a magnetostriction element.

REFERENCES:
patent: 3938125 (1976-02-01), Benassi
patent: 4481045 (1984-11-01), Watanabe
patent: 5192375 (1993-03-01), Sawa et al.
patent: 5565849 (1996-10-01), Ho et al.
patent: 5662748 (1997-09-01), Mizoguchi et al.

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