A method for surface treatment of iron alloys a helicoidal guide by means of galvanic deposition of a copper - tin - alloy and subsequent diffusion heat treatment

摘要

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 DEG and 580 DEG C.