Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1991-07-10
1992-09-01
Nguyen, Nam
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
20419212, 21912114, C23C 1434, B23K 1500
Patent
active
051435900
ABSTRACT:
Described is a method of manufacturing a sputtering target assembly is that minimizes distortion during manufacture and a novel target assembly so produced. The method involves positioning a backing member in an external shoulder formed in the target member, electron beam welding mating surfaces and machining the interior surface of the welded assembly to provide a coextensive surface along the inner surfaces of the target and backing members. The resulting target assembly can withstand high water pressure and high sputter power levels.
REFERENCES:
patent: 4290876 (1981-09-01), Nishiyama et al.
patent: 4341816 (1982-07-01), Lauterbach et al.
patent: 4885075 (1989-12-01), Hillman
patent: 5009765 (1991-04-01), Qamar et al.
Delano Robert G.
Steed Garold L.
Strothers Susan D.
Johnson Matthey Inc.
Nguyen Nam
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