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:
Aug. 03, 2004
Filed:
Apr. 30, 2002
Robert W. Bruce, Loveland, OH (US);
Antonio F. Maricocchi, Loveland, OH (US);
Roger D. Wustman, Loveland, OH (US);
Karl S. Fessenden, Wilder, KY (US);
John D. Evans, Springfield, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method of operating an EBPVD apparatus ( ) to deposit a ceramic coating on an article ( ), such that the thermal conductivity of the coating is both minimized and stabilized. More particularly, the EBPVD apparatus ( ) is operated to perform multiple successive coating operations which together constitute a coating campaign. During the campaign, the surface temperatures of the articles ( ) being coated do not exceed about 1000° C. as a result of the combined heat transfer from the coating chamber ( ) to the articles ( ) being reduced during the course of the campaign, even though the temperature within the coating chamber ( ) continuously rises during successive coating operations of the campaign. Ceramic coatings deposited at such relatively low temperatures exhibit lower and more stable thermal conductivities.