ZHANG Erlin
,
ZENG Songyan
,
ZENG Xiaochun
,
LI Qingchun(Harbin institute of Technology
,
Harbin
,
ChinaManuscript received 7 April 1995)
金属学报(英文版)
In this paper,the effects of aluminum content,C/Ti ratio and the size of powders on the phase constitute and micrography of reaction synthesis of Al+Ti+C system have been studied by the use of XRD and SEM.It has been shown that with the increase of aluminum content,in addition to TiC,Al_3Ti phase is also synthesised,and the content of Al_3Ti increase,and the size of TiC become fine,changing from 0.4-1.4μm.The increase of C/Ti ratio is favorable to the synthesis of TiC and can increase the Al content in which only TiC phase has formed,and has no effect on the micrography of TiC,but shows great in fluence on the micrography,of Al_3Ti.In addition,the size of titanium has no effect on the phase constitue and micrography,but the size of aluminum has great in fluence on them.With the increase of size of aluminum powder,Al_3Ti will be synthesised and its content increase also,so it is unfavorable to the synthesis of TiC.
关键词:
:composite
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