J. Phys. IV France 02 (1991) C2-697-C2-703
THE CVD OF TiB2 PROTECTIVE COATING ON SiC MONOFILAMENT FIBRESK.-L. CHOY and B. DERBY
Department of Materials, University of Oxford, Parks Road, GB-Oxford OX1 3PH, Great-Britain
TiB2 protective coatings have been deposited on SiC monofilament by a CVD technique. The CVD coating process studied involved the formation of TiB2 on resistively heated SiC fibres from the chemical reaction of TiCl4, BCl3, H2 at reduced pressure in a cold wall reactor. The effects of temperature, pressure and input reactant gas ratio on the morphology and nature of the coatings were investigated. The efficiency of chemically vapour deposited TiB2 as protective coating to inhibit the fibre-matrix interaction in titanium metal matrix composites was also evaluated by incorporating coated fibres in Ti-6Al-4V using diffusion bonding.
© EDP Sciences 1991