Method of improving plating properties of magnetic alloy materia

Details Method of improving plating properties of magnetic alloy materia Method of improving plating properties of magnetic alloy materia

1975-08-29

1978-03-21

Richman, Barry S.

Metal treatment

Compositions

Heat treating

134 2, 156625, 156664, 204 32R, 204 34, 427 62, 427307, C25D 534, C25D 548, C23G 114, C21D 174

Patent

active

040802264

ABSTRACT:
A niobium containing alloy amterial is initially annealed in a hydrogen atmosphere at a temperature approximating 700.degree. C. The alloy material is then immersed in an aqueous solution of approximately between 1.0%-20.0% by weight of sodium hydroxide being maintained at a temperature of at least 70.degree. C. Immersion of the alloy material in the aqueous solution removes niobium oxide which is formed in the surface portion of the alloy material during the annealing step. After removal of the alloy material from the aqueous solution, the alloy material is plated on its surface with an electric contact material.

REFERENCES:
patent: 3328271 (1967-06-01), Kneip, Jr. et al.
patent: 3553015 (1971-01-01), Dohogne
Cotton et al., Advanced Inorganic Chemistry, Interscience Publishers (1962); pp. 770 and 774, relied upon.
Kirk-Othmer Encyclopedia of Chemical Technology, 2nd Ed., (1969); vol. 13, p. 781, relied upon.

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