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Thermal barrier coating resistant to sintering

United States Patent

August 23, 2005
View the Complete Patent at the US Patent & Trademark Office
A device (10) is made, having a ceramic thermal barrier coating layer (16) characterized by a microstructure having gaps (18) with a sintering inhibiting material (22) disposed on the columns (20) within the gaps (18). The sintering resistant material (22) is stable over the range of operating temperatures of the device (10), is not soluble with the underlying ceramic layer (16) and is applied by a process that is not an electron beam physical vapor deposition process. The sintering inhibiting material (22) has a morphology adapted to improve the functionality of the sintering inhibiting material (22), characterized as continuous, nodule, rivulet, grain, crack, flake and combinations thereof and being disposed within at least some of the vertical and horizontal gaps.
Subramanian; Ramesh (Oviedo, FL), Seth; Brig B. (Maitland, FL)
Siemens Westinghouse Power Corporation (Orlando, FL)
10/ 158,305
May 30, 2002
GOVERNMENT RIGHTS STATEMENT This invention was conceived under United States Department of Energy Contract DE-FCO2-00CH11048. The United States Government has certain rights hereunder.