A CERAMIC COMPOSITE, PARTICULARLY FOR USE AT TEMPERATURES ABOVE 1400.DEGRE.C

摘要

2135061 9322258 PCTABS00027 A ceramic composite material comprises matrix and possibly reinforcing materials and intermediate weak interface material and is particularly intended for being used at temperatures above 1400 ·C and in an oxidizing environment, the matrix and possibly reinforcing materials consisting of the same or different ceramic oxides having a melting point above 1600 ·C. In order to obtain said ceramic composite material the invention suggests that the interface material consists of one or more ceramic oxides not exhibiting solid solubility, eutecticum below the temperature of manufacture or use or reactivity with any of the matrix or possibly reinforcing materials and in combination with said materials providing a stress field liable to micro-cracking, said matrix and possibly reinforcing materials essentially being substantially pure.