Rare earth metal-iron group metal target, alloy powder therefor

Details Rare earth metal-iron group metal target, alloy powder therefor Rare earth metal-iron group metal target, alloy powder therefor

1988-04-20

1990-09-18

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

148301, 204293, B22F 300

Patent

active

049575490

ABSTRACT:
A rare earth metal-iron group metal target for a magneto-optical disk is produced by mixing powder (a) produced by the rapid quenching treatment of an alloy composed of at least one rare earth metal and at least one iron group metal in a composition range which permits the formation of an eutectic structure, with powder (b) from at least one iron group metal in an amount necessary for meeting the composition requirements of the target; and subjecting the resulting mixture to pressure sintering in vacuum or in an inert gas atmosphere at a temperature lower than a liquid phase-appearing temperature of the mixture to produce a rare earth metal-iron group metal intermetallic bonding layer between the particles.

REFERENCES:
patent: 3928089 (1975-12-01), Cech
patent: 4620872 (1986-11-01), Hijikata et al.
"Mikkei New Material", p. 61, Nov. 24, 1988.
Summary of Lectures, 10th Academic Meeting of Japan Applied Magnetics Ass'n., pp. 128-129, 1986.

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