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

被引：106

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.

引用

页码：947 / 952

页数：6

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