B. Yang
,
Y.Q. Wang
,
J. Zhang and B.L. Zhou(Institute of Metal Research
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China)(Nanchang University
,
Nanchang 330029
,
China)(International Center for Materials Physics
,
Chinese Academy of Sciences
,
Shenyang 110015
,
China)
金属学报(英文版)
A novel technique m which TiC particulates are prepared by an in situ reaction in molten aluminum is introduced for producing TiC/Al composite. In order to reveal the characteristic of the technique, the formation mechanism of TiC particulates prepared by this method is studied in this paper. Both theoretical and experimental results have shown that the TiC particulates are formed by a diffusion mechanism when the molar fraction of aluminum in the preforms is higher than 20.02%. On the contrary, the TiC particulates are formed by a solution-precipitation mechanism when the fraction of aluminum in the preforms is lower than 20.02%.
关键词:
in situ reaction
,
null
,
null
