Casting transition metal alloy containing rare earth metal

Details Casting transition metal alloy containing rare earth metal Casting transition metal alloy containing rare earth metal

1988-02-02

1989-04-25

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having composition, density, or hardness gradient

428613, 428661, 428668, 428615, B32B 1504

Patent

active

048247359

ABSTRACT:
A process for casting molten transition metal alloy comprising 15 to 35 at % of rare earth metal in which the molten alloy is contacted with a surface (26) of a backing member (25) and the alloy is caused to solidify whilst in contact with the surface (26) such that when the alloy has solidified there is produced a unitary structure (21) comprising a solid layer (27) of the alloy bonded to the backing member (25). The process minimizes the effects of cracking in the alloy and facilitates the use of the alloy as a sputter target.

REFERENCES:
patent: 3856579 (1974-12-01), Allen
patent: 4121924 (1978-10-01), de Barbadello
patent: 4202022 (1980-05-01), Imamura et al.
patent: 4561484 (1985-12-01), Usui et al.
M. Copeland et al., "Stainless Steel-Gadolinium Alloys", Bureau of Mines report of investigations-6636, U.S. Dept. Int., 1965, pp. 1-29.

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