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. 25, 2007
Filed:
Sep. 29, 2003
Andrew L. Purvis, New Era, MI (US);
Bruce M. Warnes, Beaver, PA (US);
Irving R. Mcfarren, Muskegon, MI (US);
Joel L. Cockerill, Montague, MI (US);
Andrew L. Purvis, New Era, MI (US);
Bruce M. Warnes, Beaver, PA (US);
Irving R. McFarren, Muskegon, MI (US);
Joel L. Cockerill, Montague, MI (US);
Howmet Corporation, Whitehall, MI (US);
Abstract
Method of forming an outwardly grown aluminide diffusion coating on a superalloy substrate disposed in a coating retort including the steps of heating the substrate to a temperature of 900 to 1200 degrees C., flowing a coating gas comprising aluminum trichloride and a carrier gas through the coating retort at a flow rate of the coating gas of about 100 to about 450 standard cubic feet per hour, providing a concentration of aluminum trichloride in the retort of less than 1.4% by volume of the coating gas, and providing a total pressure of the coating gas in the coating retort of about 100 to about 450 Torr.