抄録
Carbon fibers coated with titanium carbide were obtained by direct titanization of carbon fibers in a gas mixture of titanium tetrachloride and hydrogen. Influence of such factors as the thickness of coating layer, titanizing temperature, gas composition, on the oxidation resistivity and tensile strength of the coated fibers are discussed. 1) Oxidation resistivity was improved with the thickness of TiC layer, but tensile strength get worse in the opposite way. 2) Maximum oxidation resistivity and tensile strength were obtained at temperatures of about 1150°Cand 1100°C, respectively, in the case of thickness of TiC layer 1μ. 3) Oxidation resistivity was improved with the increase of TiCl4 in the coating atmosphere. 4) Oxidationproceeded mainly through pinholes or cracks except for thin layer as 0.3μ.
