Titanium article having a protective coating and a method of applying a protective coating to a Titanium article

摘要

A titanium aluminide turbine blade (10) includes an aerofoil (12), a platform (14) and a root (16). A protective coating (2) is applied to the aerofoil (12) and the platform (14) of the turbine blade (10). The protective coating (2) comprises austenitic stainless steel. A chromium oxide layer (22) is formed on the protective coating (2). The protective coating (20) and chromium oxide layer (22) provides oxidation and sulphidation resistance for the titanium aluminide article (10).