Carbon nanotube toughened aluminium oxide nanocomposite
Carbon nanotube toughened aluminium oxide nanocomposite
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DOI：
10.1016/j.jeurceramsoc.2009.09.032
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发表时间：
2010-03-01
影响因子：
5.7
通讯作者：
Zhu, Yan Qiu
中科院分区：
文献类型：
--
作者：
Ahmad, Iftikhar;Cao, Hongzhi;Zhu, Yan Qiu
研究了热压法制备碳纳米管增强氧化铝纳米复合材料的力学性能。结果表明，当碳纳米管体积分数为4%时，纳米复合材料的断裂韧性、硬度和弯曲强度分别比单块氧化铝提高了94%、13%和6.4%。当碳纳米管的体积分数为10%时，除了断裂韧性提高了66%外，其力学性能与单块氧化铝相比均有所下降。讨论了碳纳米管的增韧机理，这是由于碳纳米管在基体中的均匀分散、足够的致密化和合适的碳纳米管/基体界面连接。皇冠版权所有(C)2009由爱思唯尔有限公司出版。保留所有权利。
This paper describes the mechanical properties of carbon nanotube-reinforced Al2O3 nanocomposites fabricated by hot-pressing. The results showed that compared with monolithic Al2O3 the fracture toughness, hardness and flexural strength of the nanocomposites were improved by 94%, 13% and 6.4% respectively, at 4 vol.% CNT additions. For 10 vol.% CNT additions, with the exception of the fracture toughness, which was improved by 66%, a decrease in mechanical properties was observed when compared with those for monolithic Al2O3. The toughening mechanism is discussed, which is due to the uniform dispersion of CNTs within the matrix, adequate densification, and proper CNT/matrix interfacial connections. Crown Copyright (C) 2009 Published by Elsevier Ltd. All rights reserved.