Spark plasma sintering of LaB6-(Ti, Zr)B2 composites

被引：7
|
作者：
Wang, X. [1 ]
Zhang, J. X. [1 ]
Yang, X. Y. [1 ]
Hu, K. [1 ]
Zhang, J. W. [1 ]
机构：
[1] Hefei Univ Technol, Sch Mat Sci & Engn, Hefei 230009, Peoples R China
来源：
ADVANCES IN APPLIED CERAMICS | 2017年 / 116卷 / 03期
基金：
中国国家自然科学基金;
关键词：
LaB6-(Ti; Zr)B-2; composite; spark plasma sintering; microstructure; mechanical property; MECHANICAL-PROPERTIES; INDENTATION FRACTURE; SYSTEM;
D O I：
10.1080/17436753.2016.1264139
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：
The LaB6-(Ti-,Ti- Zr)B-2 composite was fabricated from LaB6, TiB2 and ZrB2 powders by spark plasma sintering (SPS) at 1600-1900 degrees C holding for 5min under 40MPa. The densification behaviour, microstructure, mechanical properties were investigated. The complete solid solution phase of (Ti, Zr)B-2 was identified. The morphologies of LaB6 and (Ti, Zr)B-2 grains were equiaxed and elongated, respectively. The highest relative density of 98.43% and Vickers hardness of 19.56GPa were obtained at 1900 degrees C. The fracture toughness of 4.43MPam(1/2) was obtained at 1800 degrees C.
引用
收藏
页码：132 / 137
页数：6
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