Microstructures and mechanical properties of laminated ZrC-SiC composites with different SiC powders

被引:6
|
作者
Li, Yuanyuan [1 ]
Li, Qinggang [1 ,2 ]
Wang, Zhi [1 ]
机构
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Shandong Prov Key Lab Preparat & Measurement Bldg, Jinan 250022, Peoples R China
基金
中国国家自然科学基金;
关键词
Layered structures; Structural composites; Mechanical properties; Scanning electron microscopy (SEM); Heat treatment; FABRICATION; CERAMICS; BEHAVIOR; SI3N4;
D O I
10.1016/j.ceramint.2015.07.204
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 ZrC-SiC composites with different SiC powders were prepared through tape casting and hot pressing. Two different SiC powders, with sizes of 10 mu m and 800 nm, were introduced into the laminated ZrC-SiC composite. The results show that there are obvious crack deflection and prolonged crack length in the laminated structure. Moreover, the composite B with a mean SiC particle size of 800 nm is more compact than composite A (with mean SiC particle size of 10 pm). The Si elements in composite A and composite B are pressed into the ZrC layer; fewer Zr elements spread to the SiC layer. The diffusion of Si elements of the SiC(2) (SiC particle size of 800 nm) layer is easier and more uniform. Moreover, composite B has a higher density, lower porosity, and higher flexural strength than composite A. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码:15255 / 15260
页数:6
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