FABRICATION OF TiO_2 COATED C_f/ Al BY USING SOL-GEL TECHNIQUE
ZENG Qingbing(The First MedicaI University of PLA; Guangzhou 510515)
Cite this article:
ZENG Qingbing(The First MedicaI University of PLA; Guangzhou 510515). FABRICATION OF TiO_2 COATED C_f/ Al BY USING SOL-GEL TECHNIQUE. Acta Metall Sin, 1997, 33(9): 1002-1008.
Abstract TiO2 sol was prepared by hydrolysis and polycondensation of titania alkoxides in the presence of acetic acid. Further study focused on dipping TiO2 oxide coating on carbon fibers by sol-gel continous processing and fabrication of Cf/ Al preformed wire.Some characterization methods such as IR, TG-DTA, XRD, SEM are used. The results show that the effect of TiO2 coating depends on the viscosity of sol. After coating treatment,the cracks on carbon fiber surface are covered, oxidation resistance of carbon fibers is enhanced, the wettability between the fibers and melting aluminum is greatly improved and the tensile strength of C / Al prefabrication is heigtened.
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