Thermal barrier coatings having an improved columnar microstructure
An article having a spallation resistant TBC comprises a metal substrate, such as a high temperature superalloy, and a TBC, such as a coating of yttria stabilized zirconia. The TBC comprises a plurality of plasma-sprayed layers. The TBC has a coherent, continuous columnar grain microstructure, where...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
23.10.2001
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | An article having a spallation resistant TBC comprises a metal substrate, such as a high temperature superalloy, and a TBC, such as a coating of yttria stabilized zirconia. The TBC comprises a plurality of plasma-sprayed layers. The TBC has a coherent, continuous columnar grain microstructure, wherein at least one layer has a plurality of continuous columnar grains which have been extended by directional solidification into an adjacent layer. |
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Bibliography: | Application Number: US20000632354 |