A study has been made of the influence of oxidizing media (an air medium and a steam-helium mixture) in heating on the structure and thennoooxidation stability of carbon-based fibrous materials with alumina, silica, and silicon-carbide coatings applied to the surface of the fibers. It has been established that determining factors in production of protective films are the adhesive interaction of the reagents with the fiber surface and the regime of their heat treatment. It has been shown that the protective films formed increase the thermooxi-dation stability of carbon-based fibrous materials 1.5-2 times.
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