Barrier Coating of Carbon and Carbide Silicon Fibres for Composites with Ceramic Matrix

Hard melting carbide and oxide barrier coatings over carbon and carbide silicon continuous fibres were studied with respect to their morphology, microstructure, composition and resistance to oxidation, as far as these fibres are meant for the arming of composites with ceramic matrix for construction purposes. Coatings are proved to show a good adhesion towards the fibres, and are longwise and crosswise uniform. Coating methods do not permit fibres splicing with each other. Fibres strength after coating remains the same or insignificantly decreases. Composites with carbon silicon matrix, armed with carbide silicon fibres with the interface coatings are characterized by expanded destruction viscosity, provided by the weakening of the fibres - matrix bonding and fibres stretching. Therefore, they may be used as construction materials in various fields, including atomic energy production.