Super-magnetostrictive alloy

Details Super-magnetostrictive alloy Super-magnetostrictive alloy

1991-03-18

1992-05-05

Sheehan, John P.

Metal treatment

Stock

Magnetic

420416, H01F 1147

Patent

active

051103761

ABSTRACT:
A super-magnetostrictive alloy has a high coefficient of magnetostriction and satisfactory toughness. The first type of the super-magnetostrictive alloy has a composition whose atomic ratio is expressed by (Tb.sub.x Dy.sub.1-x (Fe.sub.1-y Mn.sub.y).sub.z, where 0.35.ltoreq.x.ltoreq.0.9, 0.001.ltoreq.y.ltoreq.0.6, and 1.4.ltoreq.z.ltoreq.2.1. The second type of the supermagnetostrictive alloy has a composition whose atomic ratio is expressed by (Tb.sub.x Dy.sub.1-x (Fe.sub.1-y-w Mn.sub.y T.sub.w).sub.z, where 0.2.ltoreq.x.ltoreq.0.9, 0.05.ltoreq.y.ltoreq.0.4, 0.05.ltoreq.w.ltoreq.0.1, and 1.4.ltoreq.z.ltoreq.2.1, and where T is at least one of Co and Ni. The super-magnetostrictive alloys of both types have a Laves-type intermetallic compound phase as a main phase, and a rare earth metal phase is located between the portions having the main phase.

REFERENCES:
patent: 4378258 (1983-03-01), Clark et al.

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