In-situ synthesis, microstructure and properties of Ti2AlN/TiB2 composite

被引:6
作者
Zhao, Guorui [1 ,2 ]
Chen, Jixin [1 ]
Zheng, Liya [1 ,2 ]
Li, Yueming [1 ,2 ]
Zhang, Hui [1 ,2 ]
Gai, Jianli [1 ,2 ]
Li, Meishuan [1 ]
机构
[1] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Univ Chinese Acad Sci, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
Ti2AlN; Composite; Microstructure; Mechanical properties; HIGH-TEMPERATURE; REACTIVE SYNTHESIS; THERMAL-STABILITY; HIGH-PRESSURE; TI3SIC2; DIFFRACTION; TI3ALC2; PHASES; OXIDATION; VACUUM;
D O I
10.3139/146.111460
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
Dense Ti2AlN/TiB2 composite was successfully fabricated via in-situ hot pressing using Ti, Al, and BN powders as starting materials. The reaction path, microstructure and typical properties were systematically investigated. It was found that the crystallographic orientation relationship between Ti2AlN and TiB2 could be expressed as: ( 0 0 0 1) Ti2AlN//( 0 0 0 1) TiB2 and [ 1 2 1 0] Ti2AlN//[ 1 2 1 0] TiB2 for the first time. The composite exhibits high flexural strength ( 924 +/- 45 MPa), high hardness ( 13.4 +/- 0.3 GPa) and high electrical conductivity ( 6.5 +/- 0.2 x 10(6) ( Omega m)(-1)).
引用
收藏
页码:133 / 138
页数:6
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