共 1 条
- [1] Effect of aluminium addition on the combustion reaction of titanium and carbon to form TiC[J] . Yoon Choi,Shi -Woo Rhee.Journal of Materials Science . 1993 (24)
Preparation of TiAl/Ti2AlC Composites with Ti/Al/C Powders by In-situ Hot Pressing
被引：0
作者：
梅炳初
严明
机构：
[1] State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
[2] State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China
关键词：
Ti-Al-C system;
TiAl/Ti2AlC composites;
in-situ hot pressing;
microstructure;
D O I：
暂无
中图分类号：
TB331 [金属复合材料];
学科分类号：
0805 ;
080502 ;
摘要：
TiAl/Ti2AlC composites were prepared by in-situ hot pressing of Ti/Al/C powders mixtures and sintered at different temperatures were investigated by X-ray diffraction （XRD） of samples. The reaction procedure of Ti-Al-C system could be divided into three stages. Below 900 ℃, Ti reacts with Al to form TiAl intermetallics; above 900 ℃, C reacts with remain Ti to form TiC triggered by the exothermal reaction of Ti and Al; TiAl reacts with TiC to produce dense TiAl/Ti2AlC composites. In the holding stage, ternary Ti2AlC develops to layered polycrystal and composites pyknosis in the meanwhile. The mechanism of synthesis and microstructure was especially discussed.
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页码：14 / 16
页数：3
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