The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2022
Filed:
Jun. 09, 2017
Applicant:
Safran, Paris, FR;
Inventors:
Amar Saboundji, Moissy-Cramayel, FR;
Virginie Jaquet, Moissy-Cramayel, FR;
Assignee:
SAFRAN, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 14/16 (2006.01); C23C 14/08 (2006.01); C23C 14/14 (2006.01); C23C 14/34 (2006.01); C23C 14/58 (2006.01); C23C 12/00 (2006.01); C23C 28/00 (2006.01);
U.S. Cl.
CPC ...
C23C 14/165 (2013.01); C23C 12/00 (2013.01); C23C 14/08 (2013.01); C23C 14/083 (2013.01); C23C 14/14 (2013.01); C23C 14/5806 (2013.01); C23C 14/5853 (2013.01); C23C 28/321 (2013.01); C23C 28/345 (2013.01); C23C 28/3455 (2013.01); C23C 14/34 (2013.01);
Abstract
A process for protecting a part made of a hafnium-free nickel-based single-crystal superalloy against corrosion and oxidation includes manufacturing a part made of a hafnium-free nickel-based single-crystal superalloy, depositing successively on the part, a first layer including hafnium, then a mixed layer of stacked layers of an undercoat of an alloy having 10 atomic % or more of aluminum and a second layer including hafnium or a mixed layer of an alloy of aluminum and hafnium, and then a third layer including hafnium, and diffusing and performing an oxidation treatment so as to obtain a hafnium-doped alumina layer.