Hybrid ceramic material composed of insulating and...

B - Operations – Transporting – 32 – B

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B32B 18/00 (2006.01) B32B 3/26 (2006.01) B32B 5/02 (2006.01) C04B 35/80 (2006.01) C04B 37/00 (2006.01) C04B 38/08 (2006.01) F01D 5/28 (2006.01) F01D 11/12 (2006.01)

Patent

CA 2461699

A hybrid ceramic structure (10), for use in high temperature environments such as in gas turbines, is made from an insulating layer (12) of porous ceramic that is thermally stable at temperatures up to 1700 C bonded to a high mechanical strength structural layer (8) of denser ceramic that is thermally stable at temperatures up to 1200 C, where optional high temperature resistant adhesive (9) can bond the layers together, where optional cooling ducts (11) can be present in the structural layer and where hot gas (14) can contact the insulating layer (12) and cold gas (15) can contact the structural layer (8).

L'invention concerne une structure céramique hybride (10), destinée à être utilisée dans des environnements haute température du type turbine à gaz, qui comprend une couche isolante (12) en céramique poreuse, thermiquement stable à des températures allant jusqu'à 1700· C, liée à une couche structurelle (8) à résistance mécanique élevée en céramique plus dense thermiquement stable à des températures allant jusqu'à 1200· C. On peut éventuellement utiliser un adhésif résistant aux températures élevées (9) pour lier les couches entre elles, ainsi qu'un réseau de conduites de refroidissement (11) dans la couche structurelle, avec possibilité de contact entre du gaz chaud (14) et la couche isolante (12) et de contact entre du gaz froid (15) et la couche structurelle (8).

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