Alloy target, its fabrication, and regeneration processes

Details Alloy target, its fabrication, and regeneration processes Alloy target, its fabrication, and regeneration processes

1998-03-02

2000-06-06

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75245, 419 33, 419 48, C22C 3302

Patent

active

060713232

ABSTRACT:
An alloy target comprises at least one rare earth metal element Tb, Dy, Gd, Sm, Nd, Ho, Tm, and Er with a substantial balance of a transition metal element such as Fe, Co and Ni, and has a substantially homogeneous sintered structure and a permeability of 3 or lower. The alloy target is fabricated by a process comprising steps of melting in a high-frequency furnace or crucible furnace, quenching, pulverization, and firing under pressure. After the alloy target has been used up, it is regenerated by mixing alloy powders (to be regenerated) obtained by the mechanical pulverization of the used-up target with the alloy powders obtained at the pulverization step of the aforesaid process to obtain a mixture, and firing the mixture under pressure.

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