Mechanical and thermal shock properties of laminated ZrB2-SiC/SiCw ceramics

被引：18

作者：

Zhang, Lulu ^{[1
]}

Wei, Chuncheng ^{[2
]}

Li, Shuang ^{[2
]}

Wen, Guangwu ^{[2
]}

Liu, Yuying ^{[1
]}

Wang, Peng ^{[2
]}

机构：

[1] Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255049, Peoples R China

[2] Shandong Univ Technol, Sch Mat Sci & Engn, Zibo 255049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2019年 / 45卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Laminated; ZrB2; SiC whiskers; Fracture toughness; Thermal shock resistance; SIC WHISKERS; BEHAVIOR; MICROSTRUCTURE; ABLATION; STRENGTH;

D O I：

10.1016/j.ceramint.2018.12.140

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：

Laminated structure is an effective design to improve the fracture and ablation behaviors of ceramics in the high temperature fields. To investigate the effect of interface layer on the fracture manner of laminated ceramics, two laminated ZrB2-SiC/SiCw (LZS(w)) and ZrB2-SiC/SiCp (LZS(p)) ceramics were prepared by hot pressing with SiC whiskers and SiC powders as strong interface layers, respectively. The flexural strength and fracture toughness of LZS(w) ceramic reached 471 MPa and 15.9 MPa m(1/2), respectively. This improved fracture toughness of the LZS(w) ceramic was mainly attributed to the introduction of SiC whiskers as the strong interface layer, which significantly prompted crack deflection and branching, increased crack propagation path and consumed more fracture energy during fracture process.

引用

页码：6503 / 6508

页数：6

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