The effect of carbon nanotubes microstructures on reinforcing properties of SWNTs/alumina composite

被引：34

作者：

Wei, Tong ^{[1
,2
]}

Fan, Zhuangjun ^{[1
,2
]}

Luo, Guohua ^{[1
]}

Wei, Fei ^{[1
]}

Zhao, Daqing ^{[3
]}

Fan, Jinpeng ^{[3
]}

机构：

[1] Tsinghua Univ, Dept Chem Engn, Beijing Key Lab Green Chem React Engn & Technol, Beijing 100084, Peoples R China

[2] Harbin Engn Univ, Sch Chem Engn & Mat Sci, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Heilongjiang, Peoples R China

[3] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

来源：

MATERIALS RESEARCH BULLETIN | 2008年 / 43卷 / 10期

关键词：

ceramics; nanostructures; microstructure; mechanical properties;

D O I：

10.1016/j.materresbull.2007.10.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Alumina reinforced with 1 wt% single-wall carbon nanotubes (SWNTs) was fabricated by hot-pressing. The fracture toughness of SWNTs/Al2O3 composite reaches 6.40 +/- 0.3 MPa m(1/2) which is twice as high as that of unreinforced alumina. Nanoindentation introduced controlled cracks and the damage were examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). SWNTs reinforcing mechanisms including CNT pullout, CNT fracture, CNT bridging and crack deflection were directly observed,and the relationship between carbon nanotubes microstructures in the matrix and mechanical properties was also discussed in detailed. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：2806 / 2809

页数：4

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