Patent ID: 9145339
Filing Date: 2015-09-29
Classification: C04B,C30B,Y10T

Abstract:
1. A material part, possessing a multilayer architecture formed of at least: one support layer based on carbon that possesses an open volume porosity varying from 25% to 40% and consists of graphite grains having a micrometric size of 1 to 10 μm, a surface layer made of silicon carbide, an intermediate layer inserted between said support and surface layers, wherein said intermediate layer is formed of a matrix of silicon carbide containing at least 30% by volume of a carbon nodule or nodules, with the volume fraction of silicon carbide forming said intermediate layer being equal to the volume fraction of the initial porosity of the graphite forming the support layer based on carbon, multiplied by at least 1.2, the volume fraction of silicon carbide forming the intermediate layer varying from 45% to 70%, and the surface and intermediate layers possessing less than 5% by volume of solid silicon.