Effect of different carbon sources on synthesis of TiC-TiB<inf>2</inf> composite powders

© 2016, Chinese Ceramic Society. All right reserved. TiC-TiB2 composite powders were synthesized by a carbothermal reduction method with titanium dioxide, boric acid and different carbon sources (i.e., carbon black, sucrose and glucose) as raw materials. The effects of carbon source type and reaction temperature on the synthesis performance of TiC-TiB2 composite powders were investigated. The phase composition, grain size and morphology of TiC-TiB2 composite powders were investigated by X-ray diffractometer, laser granularity meter and scanning electron microscope. The results show that TiC-TiB2 composite powders can be synthesized under optimum condition (i.e., 1400 ℃ for 2 h using carbon black and glucose as a carbon source and 1350 ℃ for 2 h using sucrose as a carbon source). TiC-TiB2 composite powders possess the smallest particle size when carbon black is used as a carbon source at the optimum reaction temperature. The particles of TiC-TiB2 composite powders are dispersive and the particle size is about 100 nm.

Effect of different carbon sources on synthesis of TiC-TiB2 composite powders Academic Article