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:
Sep. 18, 2007
Filed:
Jun. 30, 2005
Roger Dale Wustman, Mason, OH (US);
Mark Alan Rosenzweig, Hamilton, OH (US);
William Clarke Brooks, Lebanon, OH (US);
Brian H. Pilsner, Mason, OH (US);
James Douglas Risbeck, Cincinnati, OH (US);
Richard Roy Worthing, Jr., Cincinnati, OH (US);
Roger Dale Wustman, Mason, OH (US);
Mark Alan Rosenzweig, Hamilton, OH (US);
William Clarke Brooks, Lebanon, OH (US);
Brian H. Pilsner, Mason, OH (US);
James Douglas Risbeck, Cincinnati, OH (US);
Richard Roy Worthing, Jr., Cincinnati, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for selectively removing an aluminide coating from at least one surface of a metal-based substrate by: (a) contacting the surface of the substrate with at least one stripping composition comprising nitric acid at a temperature less than about 20° C. to degrade the coating without damaging the substrate; and (b) removing the degraded coating without damaging the substrate. Also disclosed is a method for replacing a worn or damaged aluminide coating on at least one surface of a metal-based substrate by selectively removing the coating using the above steps, and then applying a new aluminide coating to the surface of the substrate. Turbine engine parts, such as high-pressure turbine blades, treated using the above methods are also disclosed.