Effect of reaction atmosphere on combustion synthesis of Ti2AlN

被引:5
作者
Liu, G. H. [1 ]
Li, J. T. [1 ]
机构
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
基金
北京市自然科学基金; 中国国家自然科学基金;
关键词
Ti2AlN; Combustion synthesis; Reaction atmosphere; AIR; TI3ALC2; TI3SIC2; TIN;
D O I
10.1179/1743676111Y.0000000064
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Combustion synthesis of Ti2AlN was carried out in air and pressurised N-2 respectively. The reaction atmosphere had an evident effect on the phase composition and microstructure of the products. By combustion synthesis in 2 MPa N-2, Ti2AlN was synthesised as the major product, but in the samples prepared in air, Ti2AlN was obtained only as a minor phase, and the predominant phases were Ti-Al intermetallics. The reaction mechanism has been studied, suggesting that TiN is a key intermediate in the formation of Ti2AlN. It is proposed that, in the combustion synthesis of Ti2AlN, the flux of N-2 plays an important role in determining both reaction kinetics and phase composition of the products.
引用
收藏
页码:196 / 201
页数:6
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