Surface treatment of parts of ferrous alloys

Details Surface treatment of parts of ferrous alloys Surface treatment of parts of ferrous alloys

1974-09-09

1976-05-18

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204 43S, 204 44, C25D 550, C25D 358

Patent

active

039575942

ABSTRACT:
The surface of a ferrous alloy is treated by electrolytic deposition of a copper-tin alloy surface layer followed by the diffusion heat treatment of the coated surface. Electrolysis is carried out in a bath containing monovalent copper ions, tetravalent tin ions, an alkali metal hydroxide, an alkali metal cyanide, alkali metal carbonates, alkali metal stannites, and an alkali metal citrate; and the diffusion heat treatment is carried out at between 500.degree. and 580.degree.C.

REFERENCES:
patent: 2397522 (1946-04-01), Baier
patent: 2793990 (1957-05-01), Heymann et al.
Brenner, "Electrodeposition of Alloys," Academic Press, N.Y. Vol. I., 1963, Chapter 15, pp. 500-507.

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