Electrically conductive alumina-carbon nanocomposites prepared by Spark Plasma Sintering

被引：95
作者：
Inam, Fawad [1 ,2 ]
Yan, Haixue [1 ,2 ]
Jayaseelan, Daniel D. [3 ]
Peijs, Ton [1 ,2 ]
Reece, Michael J. [1 ,2 ]
机构：
[1] Univ London, Mat Res Ctr, London E1 4NS, England
[2] Univ London, Sch Mat Sci & Engn, London E1 4NS, England
[3] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2010年 / 30卷 / 02期
基金：
英国工程与自然科学研究理事会;
关键词：
Nanocomposites; Electrical conductivity; Al2O3; Carbon; Spark Plasma Sintering (SPS); COMPOSITES; NANOTUBES;
D O I：
10.1016/j.jeurceramsoc.2009.05.045
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：
Carbon nanotubes (CNTs) and carbon black were added to alumina to convert it into a good electrical conductor. Alumina-CNT and alumina-carbon black nanocomposites were fabricated by Spark Plasma Sintering (SPS). The electrical conductivity of alumina-CNT nanocomposites was found to be four times higher as compared to alumina-carbon black nanocomposites due to the fibrous nature and high aspect ratio of CNTs. The electrical conductivity of alumina-CNT nanocomposite increased with increasing grain size due to increasing density of CNTs at the grain boundaries. This effect was not observed for alumina-carbon black nanocomposite due to the particulate geometry of the carbon black. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码：153 / 157
页数：5
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