Patent ID: 6251317
Filing Date: 2001-06-26
Classification: C04B

Abstract:
A method for manufacturing a ceramic composite material comprising matrix and reinforcing materials and an intermediate weak interface material, said composite material being particularly intended for use at temperatures above 1400.degree. C. and in an oxidizing environment, the matrix and reinforcing materials consisting of the same or different ceramic oxides having a melting point above 1600.degree. C., and the interface material providing in combination with said matrix and reinforcing materials a stress field liable to micro-cracking, comprising:immersing the reinforcing material in a powder slurry containing carbon (C) and ZrO.sub.2 so as to be coated thereby, thereby creating said composite material;drying said composite material;green forming and densifying said composite material; andheat-treating said composite material in air leaving a porous structure of the interface material.