The sintering and grain growth behaviour of ceramic-carbon nanotube nanocomposites

被引：105
作者：
Inam, Fawad [1 ]
Yan, Haixue [1 ,2 ,3 ]
Peijs, Ton [1 ,2 ,3 ]
Reece, Michael J. [1 ,2 ,3 ]
机构：
[1] Queen Mary Univ London, Nanoforce Technol Ltd, London E1 4NS, England
[2] Queen Mary Univ London, Ctr Mat Res, London E1 4NS, England
[3] Queen Mary Univ London, Sch Mat Sci & Engn, London E1 4NS, England
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2010年 / 70卷 / 06期
关键词：
Carbon nanotubes; Ceramics; Nanocomposites; Powder processing; Sintering; GLASS MATRIX COMPOSITES; MECHANICAL-PROPERTIES; ELECTRICAL-CONDUCTIVITY; NITRIDE COMPOSITES; THERMAL-PROPERTIES; ALUMINA; MICROSTRUCTURE; SIZE; POWDER; FABRICATION;
D O I：
10.1016/j.compscitech.2010.02.010
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The sintering and grain growth behaviour of alumina + 2, 3.5 and 5 wt.% carbon nanotubes (CNTs) and alumina + 2 wt.% carbon black nanocomposites prepared by Spark Plasma Sintering (SPS) were studied. The addition of CNTs to ceramics produces a large reduction in the sintering temperature required for their complete densification and a significant grain size refinement by a previously unreported mechanism. The CNTs form a strong entangled network around the grains, which constrains the normal and abnormal grain growth. An alumina/alumina + 2 wt.% CNT/alumina laminate structure was prepared to demonstrate directly the large grain-growth retardation effect of CNTs. These effects open up the possibility of using CNTs as a sintering aid to control the sintering behaviour and microstructures of ceramics in bulk, laminate and functionally gradient (FGM) form. (C) 2010 Elsevier Ltd. All rights reserved.
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收藏
页码：947 / 952
页数：6
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