Carbonaceous material having oxidation-resistant protective layer and method for producing the same

摘要

Provided is a carbonaceous material having an oxidation-resistant protective layer which is substantially not oxidized at a temperature of at least 800 DEG C in the air. The oxidation-resistant protective layer preferably comprises a plurality of layers and at least one layer of them is a boron-containing layer on which a layer comprising glass or ceramic is formed. The carbonaceous material preferably comprises a C/C composite, an Si-SiC composite material or an SiC composite material. A method for producing the carbonaceous material is also provided.