PROCESS FOR PRODUCING INTERPHASE MATERIAL, MATERIAL OBTAINED, PROCESS FOR TREATING CERAMIC REINFORCEMENT FIBER WITH SUCH MATERIAL AND THERMOSTRUCTURAL MATERIAL INCLUDING SUCH FIBERS

摘要

P - The object of the invention is a process for producing an interphase material from oxides having porosities, provided for being placed between a ceramic reinforcing material, in particular fibers, and a glass, ceramic or glass-ceramic matrix, characterized in that it consists in: - choosing a composition substantially identical to that of the matrix and / or the reinforcing material, so as to limit the diffusion and to have substantially identical expansion coefficients but having a melting temperature higher than that of the matrix, - adding a porosity-generating auxiliary to said composition, - depositing said composition on the reinforcing material. The invention also covers the material obtained, the method for treating a ceramic reinforcing fiber with this interphase material and the method for manufacturing an associated thermostructural material. /P