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:
May. 07, 2002
Filed:
Nov. 18, 1999
Applicant:
Inventors:
Douglas M. Carlson, Cedar Crest, NM (US);
Charles A. Claus, Concord, MA (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 1/500 ;
U.S. Cl.
CPC ...
B32B 1/500 ;
Abstract
An article having a layer of metal thermally sprayed over a substrate with a roughened interface at the surface of the substrate applied by a thermal spray process, such as the HVOF process. The interface has a predetermined cleanliness level so that after a diffusion heat treatment, the applied layer has an extended life in severe gas turbine service due to improved adhesion of the layer to the substrate. When the article is used for high temperature applications such as turbine shrouds and encounters significant levels of stress, the strength of the interface can be a factor in the life of the coating.