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:
Dec. 28, 2010
Filed:
Sep. 03, 2008
David B. Allen, Oviedo, FL (US);
Andrew J. Burns, Orlando, FL (US);
Ramesh Subramanian, Oviedo, FL (US);
David B. Allen, Oviedo, FL (US);
Andrew J. Burns, Orlando, FL (US);
Ramesh Subramanian, Oviedo, FL (US);
Siemens Energy, Inc., Orlando, FL (US);
Abstract
A bimetallic bond layer () for a thermal barrier coating or TBC () on a superalloy substrate () for a high temperature environment. An interlayer () is applied on the substrate. A bond coat () comprising a CoNiCrAlY or NiCoCrAlY alloy is applied on the interlayer. A ceramic TBC () such as 8YSZ is applied on the bond coat. The interlayer () is an alloy that is compatible with the substrate and the bond coat, and that blocks or delays diffusion of aluminum from the bond coat into the substrate at high operating temperatures. This preserves aluminum in the bond coat that maintains a beneficial alumina scale () between the bond coat and the TBC. This delays spalling of the TBC, and lengthens the coating and component life.