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. 26, 2004
Filed:
Aug. 16, 2002
Ramgopal Darolia, West Chester, OH (US);
Boris A. Movchan, Kyiv, UA;
Yuriy E. Rudoy, Kyiv, UA;
Leonella M. Nerodenko, Kyiv, UA;
Irene Spitsberg, Loveland, OH (US);
David John Wortman, Niskayuna, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A thermal barrier coating, or TBC ( ), and method for forming the TBC ( ). The TBC ( ) is formed of a thermal-insulating material that contains yttria-stabilized zirconia (YSZ) alloyed with at least a third oxide. The TBC ( ) is formed to also contain elemental carbon, and may potentially contain carbides and/or a carbon-containing gas that forms from the thermal decomposition of carbon. The TBC ( ) is characterized by lower density and thermal conductivity, high temperature stability and improved mechanical properties. To exhibit the desired effect, the third oxide is more particularly one that increases the lattice strain energy of the TBC microstructure as a result of having an ion size that is sufficiently different than a zirconium ion.