TEM analysis of nanocrystalline SiC ceramics sintered by SPS using Al2O3-TiO2 additive

被引：12

作者：

Shinoda, Yutaka ^{[1
]}

Suzuki, Yoshikazu ^{[2
]}

Yoshida, Katsumi ^{[3
]}

机构：

[1] Tokyo Inst Technol, Secure Mat Ctr, Mat & Structures Lab, Yokohama, Kanagawa 2268503, Japan

[2] Univ Tsukuba, Fac Pure & Appl Sci, I-1-1 Tennodai, Ibaraki 3058573, Japan

[3] Tokyo Inst Technol, Res Lab Nucl Reactors, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan

来源：

JOURNAL OF ASIAN CERAMIC SOCIETIES | 2013年 / 1卷 / 03期

关键词：

Silicon carbide; Alumina; Titania; Spark plasma sintering; Mullite; TEM; EDS;

D O I：

10.1016/j.jascer.2013.06.004

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：

Nanocrystalline SiC ceramics was fabricated by spark plasma sintering (SPS) using Al2O3 and TiO2 additives with the composition of 5, 10 and 20 mass% (Al2O3-TiO2). XRD analysis revealed formation of TiC phase. And also mullite phase with preferred orientation was detected in SiC with 20 mass% addition. From TEM observation and EDS analysis, TiC, aluminosilicate glass and mullite crystal phases were identified. Segregation of titanium atoms in addition to aluminum and oxygen atoms was observed at intergranular glassy phase with the thickness of 1-2 nm. The electrical conductivity was the same level as the Al2O3 single addition to SiC ceramics. (C) 2013 The Ceramic Society of Japan and the Korean Ceramic Society. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：267 / 273

页数：7

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