Enhancement mechanical properties of in-situ preparated B4C-based composites with small amount of (Ti3SiC2+Si)

被引：8
作者：
Liu, Yingying [1 ,2 ]
Liu, Huan [1 ,2 ]
Zhou, Yabin [3 ]
Sha, Wenhao [1 ,2 ]
Huang, Yihua [1 ]
Huang, Zhengren [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 201800, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[3] Nanjing Tech Univ, 30 Puzhu South Rd, Nanjing, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2022年 / 48卷 / 09期
关键词：
B4C-based composites; Mechanical properties; Spark plasma sintering; Ti3SiC2+Si; MICROSTRUCTURE; B4C; CONSOLIDATION; FABRICATION; EVOLUTION; STRESSES; CARBON;
D O I：
10.1016/j.ceramint.2022.01.058
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：
B4C-based composites were synthesized by spark plasma sintering using B4C?Ti3SiC2?Si as starting materials. The effects of sintering temperature and second phase content on mechanical performance and microstructure of composites were studied. Full dense B4C-based composites were obtained at a low sintering temperature of 1800 C. The B4C-based composite with 10 wt% (TiB2+SiC) shows excellent mechanical properties: the Vickers hardness, fracture toughness, and flexural strength are 33 GPa, 8 MPa m(1/2), 569 MPa, respectively. High hardness and flexural strength were attributed to the high relative density and grain refinement, the high fracture toughness was owing to the crack deflection and uniform distribution of the second phase.
引用
收藏
页码：12006 / 12013
页数：8
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