Reinforcement of precursor-derived Si-C-N ceramics with carbon nanotubes

被引：44

作者：

Katsuda, Yuji

Gerstel, Peter

Janakiraman, Narayanan

Bill, Joachim

Aldinger, Fritz

机构：

[1] Univ Stuttgart, Max Planck Inst Met Forsch, Pulvermet Lab, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Inst Nichtmet Anorgan Mat, Pulvermet Lab, D-70569 Stuttgart, Germany

[3] NGK Insulators Ltd, Mat Res Lab, Nagano 4678530, Japan

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2006年 / 26卷 / 15期

关键词：

nanocomposites; toughness and toughening; electron microscopy; precursors-organic; carbon nanotubes;

D O I：

10.1016/j.jeurceramsoc.2005.10.014

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：

Nanocomposites consisting of precursor-derived Si-C-N ceramics incorporated with carbon nanotubes (CNTs) were successfully prepared by casting of a mixture of CNTs and a liquid precursor polymer followed by cross-linking and thermolysis. The effect of CNTs on the fracture toughness of these nanocomposites was investigated by a thermal loading technique. The results reveal a dependence of the fracture toughness on the type of the CNTs. One type shows a significant increase of the fracture toughness at CNT contents of only 1-2 mass%, whereas the other one exhibits no effect. The microstructural effects of CNTs observed at the fracture surfaces of the nanocomposites by scanning electron microscope (SEM) and transmission electron microscope (TEM) can be correlated with the observed fracture toughness behavior. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3399 / 3405

页数：7

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