Plate-shaped Titanium Carbides Appearing in Carbides of TiC-Mo2C-Ni Alloy.

It has been known that the plate-shaped titanium carbides (TiC) frequently appeared in carbides of TiC-Mo2C-Ni alloy. The study of formation of the plate-shpaed TiC has been made.It was found that the starting TiC powder fractured along (002) cleavage plane of TiC crystal during ball-milling, resulting in the (TiC+Mo2C+Ni) mixture containing plate-shpaed TiC particles. It was also found that the formation of plate-shaped TiC in carbides of the alloy was due to the fact that the plate-shaped TiC particles were rapidly occluded by so-called surrounding structure at the initial stage of sintering.