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:
Oct. 15, 2002
Filed:
Oct. 17, 2000
William R. Stowell, Rising Sun, IN (US);
Joseph Thomas Begovich, West Chester, OH (US);
Thomas Walter Rentz, Cincinnati, OH (US);
Glen A. MacMillan, Simpsonville, SC (US);
John Greene, Simpsonsville, SC (US);
Jane Ann Murphy, Middletown, OH (US);
Dainel P. Ivkovich, Jr., Fairfield, OH (US);
Andrew J. Skoog, West Chester, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A protective coating and coating method for protecting a thermal barrier coating (TBC) on a component, such as a component of a gas turbine engine. The protective coating comprises alumina particles in a silica-containing matrix, and may be substantially homogeneous or formed of multiple layers having different compositions. The composition and relative amounts of alumina and matrix material in the protective coating enable the coating to react with molten compounds containing calcia, magnesia, alumina and/or silica (CMAS), forming a compound with a melting temperature that is significantly higher than CMAS. As such, infiltration of molten CMAS into the TBC is significantly reduced or entirely avoided.