Preparation of TiAl/Ti2AlC composites with Ti/Al/C powders by in-situ hot pressing

被引：0
|
作者：
Mei Bingchu [1 ]
Yan Ming [1 ]
Zhu Jiaoqun [1 ]
Zhou Weibing [1 ]
机构：
[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2006年 / 21卷 / 02期
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：
T [工业技术];
学科分类号：
08 ;
摘要：
TiAl/Ti2AlC composites were prepared by in-situ hot pressing of Ti/Al/C powders mixtures and siniered at different temperatures were investigated by X-ray diffraction (XRD) of samples. The reaction procedure of T-Al-C system could be divided into three stages. Below 900 degrees C, K reacts with Al to form TiAl intermetallies; above 900 V, C reacts with remain T to form KC triggered by the exothermal reaction of Ti and Al; TiAl reacts with TiC to produce dense TiAl/Ti-2 AlC composites. In the holding stage, ternary Ti-2 AlC develops to layered polycrystal and conposites pyknosis in the meanwhile. The mechanism of synthesis and microstructure was especially discussed.
引用
收藏
页码：14 / 16
页数：3
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