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. 11, 1999
Filed:
Mar. 01, 1993
Himanshu Bachubhai Vakil, Schenectady, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for producing on the surface of a nickel- or cobalt-based superalloy article a spallation-resistant aluminum oxide layer. An aluminum oxide layer is produced, typically under tensile stress, by chemical vapor deposition at low temperatures on a metal aluminide layer that has been deposited on the surface of the article whereby nickel or cobalt from the superalloy surface reacts with an aluminum compound to form the metal aluminide layer. The aluminum oxide layer under tensile stress is then heated to induce cracking therein, which imparts spallation resistance thereto. If desired, a thermal barrier layer may be deposited on the aluminum oxide layer.