MoSi-TiC composite powders were fabricated by in-situ reaction through mechanical alloying. Also the monolithic MoSi as well as TiC were synthesiced by mechanical alloying for comparison. An abrupt increase of vial surface temperature was detected due to a sudden reaction between elemental powders during milling. The reaction time for synthesis of composite powders decreased with increasing the content of (Ti+C) powder. It was found that a significant decrease of Ti grain size was observed with increasing the milling time. And the synthesis reaction of MoSi-TiC composite powders were largely dependent on the reaction between Ti and C powders.

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