| 摘要 |
A nickel alloy article having at least 20% Ni, e.g. an alloy of 56% Fe, 27% Ni and 17% Co, is coated with a gold film, e.g. by vacuum evaporation, sputtering, gas plating, electrolytic or electroless plating, preferably from a KCN gold electro-plating bath, and then heated to between 600 and 1200 DEG C. for between 1/2 and 2 hours, e.g. in an inert atmosphere of N2 or A, to diffuse the gold into the article surface to provide the article with improved corrosion resistance, strength, conductivity and solderability. Prior to coating, the article may be cleaned with trichlorethylene or benzene, heated in H2 and etched with HCl. Glass may be directly fused to the surface during the gold diffusion to form a seal in the use of the treated article for components of semi-conductor devices.
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