SOLID SEAL WHICH IS OBTAINED BY MEANS OF THERMAL SPRAYING

摘要

The invention relates to an element which is made from a composite material (1) comprising a micro-cracked matrix (7) which takes the form of a three-dimensional interconnected network of micro-cracks (4) and which is open at the surface of the ceramic matrix. According to the invention, an additive material (6), consisting of a flux or glass, is dispersed in the matrix, said additive material (6) comprising a material which, when the composite material is brought to a determined temperature, softens and migrates by capillary action through the network of micro-cracks (4) to the surface of the element. A sufficient quantity of additive material is dispersed in the matrix in relation to same in order to coat an open surface (5) of the composite element such as to create a gas-tight barrier thereon.