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:
Jun. 03, 2014
Filed:
May. 04, 2012
Liming Zhang, Greer, SC (US);
David Clayton Van Nest, Iii, Greenville, SC (US);
Jere Allen Johnson, Greenville, SC (US);
Liming Zhang, Greer, SC (US);
David Clayton Van Nest, III, Greenville, SC (US);
Jere Allen Johnson, Greenville, SC (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for controlled removal of a portion of a diffusion coating from a coated superalloy component and a method for rejuvenating a coated superalloy component are provided. The methods include providing the component having an oxide layer, an additive layer between the oxide layer and a diffusion zone, the diffusion zone being between the additive layer and a superalloy substrate of the superalloy component. The methods include selectively removing the oxide layer and a portion of the additive layer by grit blasting, wherein removing creates an exposed portion. Rejuvenating includes applying an aluminide coating to the exposed portion and heat treating at a preselected elevated temperature to form a rejuvenated protective aluminide coating on the superalloy component.