| abstract |
- The object of the invention is a process for preparing a material interphase from oxides having porosities, intended to be disposed between a ceramic reinforcing material, in particular fibers, and a glass, ceramic or glass-ceramic matrix, characterized in that it consists of: - choose a composition substantially identical to that of the matrix and / or reinforcing material, so as to limit the diffusion and have substantially identical expansion coefficients but having a melting temperature higher than that of the matrix, - add to said composition an auxiliary porosity generator, - depositing said composition on the reinforcing material. The invention also covers the material obtained, the process for treatment of a reinforcing ceramic fiber with this interphase material and the manufacturing process of an associated thermostructural material. |