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...http://www.google.fr/patents/US6180184?utm_source=gb-gplus-shareBrevet US6180184 - Thermal barrier coatings having an improved columnar microstructure
Thermal barrier coatings having an improved columnar microstructure
