METHOD FOR TREATING CERAMIC FIBRES BY PHOSPHATION

摘要

The invention relates to a method for treating silicon carbide fibres (20), comprising a reactive gaseous phosphation heat treatment such as to form, around each fibre (20), an oxidation-protective coating (200) including a surface layer of silicon pyrophosphate crystals (201) and at least one subjacent bilayer system (210) comprising a layer of a phosphosilicate glass (211) and a layer of microporous carbon (212).