Ceramic structure

Details Ceramic structure Ceramic structure

C - Chemistry, Metallurgy

04

B

C04B 37/00 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2372301

A ceramic structure obtained by combining a plurality of sintered ceramic material segments (3a, 3b) having a thermal expansion coefficient of 3.0×10 -6/° C or more and integrating them, in which ceramic structure thermal impact--relieving zones (5a, 5b) capable of releasing the thermal impact applied are provided between the segments (3a, 3b) and the widths of the thermal impact-relieving zones (5a, 5b) in the sectional direction of the ceramic structure are various. This ceramic structure is capable of sufficiently release the thermal impact applied, without significantly reducing the effective sectional area of the structure or the overall strength of the structure, and can have the universality capable of coping with various applications and various materials.

L'invention concerne une structure en céramique constituée par combinaison et intégration de plusieurs segments de corps frittés en céramique (3a, 3b), dont les coefficients d'expansion thermique sont égaux ou supérieurs à 3,0 x 10<-6>/C DEG . Des zones de dégagement de chocs thermiques (5a, 5b) capables de libérer un choc thermique se situent entre les segments (3a, 3b) et l'aspect flexible est attribué à la largeur desdites zones de dégagement (5a, 5b) dans le sens de la section transversale de la structure en céramique. Ladite structure peut libérer complètement un choc thermique sans provoquer de diminution importante de la zone de section transversale efficace de la structure ou de la résistance de l'ensemble de la structure, et présente un degré élevé de souplesse d'utilisation applicable dans le cadre de diverses utilisations et avec des matériaux variés.

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