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. 06, 2008
Filed:
Jun. 18, 2004
William Randolph Stowell, Rising Sun, OH (US);
Daniel Peter Ivkovich, Fairfield, OH (US);
Timothy Lance Manning, Cincinnati, OH (US);
Tara Easter Mcgovern, Simpsonville, SC (US);
Jane Ann Murphy, Franklin, OH (US);
Thomas Walter Rentz, Cincinnati, OH (US);
Mathew Curtis Roling, Simpsonville, SC (US);
Raymond Grant Rowe, Niskayuna, NY (US);
Andrew Jay Skoog, West Chester, OH (US);
William Randolph Stowell, Rising Sun, OH (US);
Daniel Peter Ivkovich, Fairfield, OH (US);
Timothy Lance Manning, Cincinnati, OH (US);
Tara Easter McGovern, Simpsonville, SC (US);
Jane Ann Murphy, Franklin, OH (US);
Thomas Walter Rentz, Cincinnati, OH (US);
Mathew Curtis Roling, Simpsonville, SC (US);
Raymond Grant Rowe, Niskayuna, NY (US);
Andrew Jay Skoog, West Chester, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
A coating and method for overcoating a TBC on a component used in a high-temperature environment, such as the combustor section of an industrial gas turbine. The coating defines the outermost surface of the component and is formed of at least two layers having different compositions. An inner layer of the coating contains alumina in a first silica-containing matrix material that is free of zinc titanate. An outer layer of the coating contains alumina, a glass material, and zinc titanate in a second silica-containing matrix material. The outer layer of the coating has a surface roughness of not greater than three micrometers Ra and forms the outermost surface of the component. The coating reduces the component temperature by reducing the convective and radiant heat transfer thereto.