Synthesis and mechanical properties of TiB2/Ti2AlN composites fabricated by hot pressing sintering

被引：9
作者：
Lu, Shuai [1 ,2 ]
Li, Xiaoqiang [1 ]
Zhou, Youfu [1 ]
Xu, Wentao [1 ]
Ling, Junrong [1 ,2 ]
Pan, Wei [3 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
来源：
JOURNAL OF THE CERAMIC SOCIETY OF JAPAN | 2018年 / 126卷 / 11期
基金：
中国国家自然科学基金;
关键词：
TiB2/Ti2AlN composites; In-situ reaction; Hot pressing sintering; Mechanica I properties; SOLID-SOLUTIONS; MICROSTRUCTURE; CERAMICS; TI2ALN; BEHAVIOR; TI3ALC2; POWDERS;
D O I：
10.2109/jcersj2.18060
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：
TiB2/Ti2AlN composites with different proportions were successfully fabricated through solid state reaction of Ti/Al/AlN/BN powders and subsequent hot pressing sintering. The reaction mechanism, microstructures and mechanical properties of the composites were investigated. The Vickers hardness of the samples ascended with increases in the TiB2 content and reached the highest value of 11.32 +/- 0.12 GPa at a TiB2/Ti2AlN mole ratio of 1:2 (M2T1). TiB2/Ti2AlN composites with a mole ratio of 1:3 (M3T1) and 1:4 (M4T1) exhibited the maximum flexural strength of 497 +/- 15MPa and the highest fracture toughness of 9.52 +/- 0.14 MPa center dot m(1/2), respectively, which are 1.3 times and 1.8 times that of pure Ti2AlN (MT0) ceramic. (c) 2018 The Ceramic Society of Japan. All rights reserved.
引用
收藏
页码：900 / 905
页数：6
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