Patent Number: 6,332,937

Title: Method of improving oxidation and corrosion resistance of a superalloy article, and a superalloy article obtained by the method

Abstract: A method of improving the oxidation and corrosion resistance of a superalloy article comprises providing a superalloy substrate having a sulphur content which is less than 0.8 ppm by weight, and depositing on the substrate a protective antioxidation coating having a sulphur content also less than 0.8 ppm by weight. A heat barrier layer may also be provided by depositing on the protective anti-oxidation coating a ceramic coating of columnar structure.

Inventors: Jaslier; Yann (Melun, FR), Alperine; Serge Alexandre (Paris, FR), Leger; Jacques Louis (Combs la Ville, FR)

Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation ""Snecma""

International Classification: C23F 11/16 (20060101); C23F 11/10 (20060101); C23C 28/00 (20060101); C23C 30/00 (20060101); C23C 014/34 ()

Expiration Date: 12/25/2018