COMPOSITE METAL HAVING A NICKEL ALLOY BASE WITH A DIFFUSED COATING

摘要

A method of producing a sulfidation and oxidation resistant coating upon nickel base alloys, and article produced thereby wherein chromium and aluminum-silicon layers are imposed upon the base and then subject to such temperatures as will cause diffusion of these layers, resulting in a product wherein the base material is provided with a chromium rich intermediate layer and an aluminum rich exterior layer.