Diffusion treatment of metal

Details Diffusion treatment of metal Diffusion treatment of metal

C - Chemistry, Metallurgy

23

C

117/74.5

C23C 9/02 (1980.01)

Patent

CA 1102184

ABSTRACT OF THE DISCLOSURE In the process of first diffusion chromizing and then diffusion aluminizing a nickel- or cobalt-based superalloy to impart a high resistance to sulfidation attack, the improvement according to which the diffusion chromizing is effected in a pack containing at least about 8% Ni3A1 and sufficient chromium in a retort tall enough to form an alpha-chrome phase at least 0.2 mil thick.

252386

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