Microstructure and mechanical properties of alumina ceramics reinforced by boron nitride nanotubes

被引：59
|
作者：
Wang, Wei-Li [1 ,2 ]
Bi, Jian-Qiang [1 ,2 ]
Wang, Shou-Ren [3 ]
Sun, Kang-Ning [1 ,2 ]
Du, Ming [1 ,2 ]
Long, Na-Na [1 ,2 ]
Bai, Yu-Jun [1 ]
机构：
[1] Shandong Univ, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jinan 250061, Peoples R China
[2] Shandong Univ, Engn Ceram Key Lab Shandong Prov, Jinan 250061, Peoples R China
[3] Univ Jinan, Sch Mech Engn, Jinan 250022, Peoples R China
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2011年 / 31卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Hot pressing; Composites; Mechanical properties; Al2O3; Boron nitride nanotubes; WALL CARBON NANOTUBES; ELASTIC-MODULUS; NANOCOMPOSITES; COMPOSITES; CONDUCTIVITY; IMPROVEMENT;
D O I：
10.1016/j.jeurceramsoc.2011.05.042
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：
Boron nitride nanotubes (BNNTs)/alumina composites were fabricated by hot pressing. The mechanical properties of the composites are greatly dependent upon the content of BNNTs. In comparison with monolithic alumina, the incorporation of BNNTs results in the improvement of bending strength and fracture toughness owing to the effective inhibition of grain growth. A routine toughening mechanism, especially the bridging of BNNTs at grain boundaries and the sufficient physical bonding between BNNTs and alumina matrix, is dominantly responsible for the increase in mechanical properties. Crown Copyright (C) 2011 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2277 / 2284
页数：8
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