Thermal barrier layer and process for producing the same

Details Thermal barrier layer and process for producing the same Thermal barrier layer and process for producing the same

C - Chemistry, Metallurgy

23

C

C23C 4/10 (2006.01) B32B 9/00 (2006.01) B32B 15/04 (2006.01) B32B 15/20 (2006.01) C23C 4/04 (2006.01) C23C 4/18 (2006.01) C23C 14/08 (2006.01)

Patent

CA 2428363

A device operable in a temperature environment in excess of about 1000°C is provided. The device comprises a substrate and a ceramic thermal barrier layer deposited on at least a portion of the substrate. The layer is formed with a ternary or pseudoternary oxide having a pyrochlore or perovskite structure and a fugative material and having pores or other voluminous defects. The thermal barrier layer advantageously is abradable.

La présente invention concerne un dispositif pouvant fonctionner par des températures dépassant 1000 oC environ. Le dispositif comprend un substrat et une couche d'isolation thermique en céramique sur au moins une partie du substrat. La couche d'isolation est formée au moyen d'un oxyde ternaire ou pseudoternaire comportant une structure de pyrochlore ou de pérovskite, ainsi qu'une substance fugace, et comportant des pores ou d'autres défauts bouffants. Un avantage de cette couche d'isolation thermique est qu'elle peut être abrasée.

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