Electrical properties of silica-based nanocomposites with multiwall carbon nanotubes

被引：39

作者：

Guo, Shuqi

Sivakumar, Ramasamy

Kitazawa, Hideaki

Kagawa, Yutaka

机构：

[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

[2] Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo 1538505, Japan

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2007年 / 90卷 / 05期

关键词：

D O I：

10.1111/j.1551-2916.2007.01636.x

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：

Fully dense multiwall carbon nanotubes (MWCNT)/SiO2 nanocomposites with MWCNTs contents of 5 and 10 vol% have been processed by spark plasma sintering, and the electrical conductivities of the nanocomposites were evaluated at temperatures ranging from 5 to 300 K. It has been found that the incorporation of MWCNTs converted an insulating silica nanoceramic into metallically conductive composites. The room-temperature conductivities of the nanocomposites, with over 14 orders of magnitude compared with pure silica, are in the range of 8 and 65 S/m. Also, it was interestingly found that the conductivity increased linearly with temperature from 5 to 300 K.

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页码：1667 / 1670

页数：4

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