Metal treatment – Stock – Cobalt base
Patent
1982-09-17
1986-09-23
Miller, Edward A.
Metal treatment
Stock
Cobalt base
148426, 420902, 204 431, 204 445, 204123, C22C 1907
Patent
active
046133887
ABSTRACT:
There are provided superplastic alloys formed by electrodeposition of the alloy onto a cathode from an electrolyte containing a first metal ion, which is iron, nickel or cobalt, and a second constituent different from the first, which is iron, nickel, cobalt, tungsten or molybdenum, or a colloidal dispersoid. The products formed are fine-grain deposits free of intergranular embrittling films, and exhibit grain boundary flow at a superplastic temperature below a recrystallization temperature of the deposit. Nickel-cobalt alloys are preferred, and are deposited from halide-free sulfamate baths, with care being taken to eliminate all anode oxides from the system. In a complex structure, the approximate initial hardware contour is formed by electrodeposition, and the final structure formed by superplastic forming.
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Marker Harold E.
Walter Robert J.
Field Harry B.
Ginsberg Lawrence N.
Hamann H. Fredrick
Miller Edward A.
Rockwell International Corporation
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