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:
Apr. 28, 2009
Filed:
Feb. 22, 2006
Paul J. Fink, Maineville, OH (US);
Brian T. Hazel, West Chester, OH (US);
Christine Govern, Cincinnati, OH (US);
Joseph M. Greene, Indianapolis, IN (US);
Paul J. Fink, Maineville, OH (US);
Brian T. Hazel, West Chester, OH (US);
Christine Govern, Cincinnati, OH (US);
Joseph M. Greene, Indianapolis, IN (US);
General Electric Company, Schenectady, NY (US);
Abstract
An article and method for stabilization of a nickel-based superalloy coated with a diffusion aluminide coating. The region below the aluminide coating is first carburized to form refractory carbides. The article is cleaned and masked as required so that regions that will not have an aluminide coating are not carburized. After placing the article into a furnace and heating in a non-oxidizing atmosphere to a carburizing temperature, a carburizing gas is introduced, and the near surface region is carburized to a depth of about 100 microns. Refractory carbides are formed in this region. When a diffusion aluminide coating is formed on the article, the refractory elements, being present as refractory carbides, are not available to form detrimental TCP phases.