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:
Mar. 19, 2019
Filed:
Dec. 08, 2014
Applicant:
Snecma, Paris, FR;
Inventor:
Stéphane Knittel, Saint-Fargeau-Ponthierry, FR;
Assignee:
SAFRAN AIRCRAFT ENGINES, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 11/02 (2006.01); C25D 11/26 (2006.01); C25D 21/12 (2006.01); C25D 11/00 (2006.01);
U.S. Cl.
CPC ...
C25D 11/26 (2013.01); C25D 11/024 (2013.01); C25D 11/026 (2013.01); C25D 21/12 (2013.01);
Abstract
A method of fabricating a part coated with a protective coating, the method including using micro-arc oxidation treatment to form a protective coating on the outside surface of a part, the part including a niobium matrix having metallic silicide inclusions present therein, the current passing through the part being controlled during the micro-arc oxidation treatment in order to subject the part to a succession of current cycles, the ratio of (quantity of positive charge applied to the part)/(quantity of negative charge applied to the part) lying in the range 0.80 to 1.6 for each current cycle.