Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (2): 117-122.doi: 10.3969/j.issn.1000-565X.2013.02.019

• Materials Science & Technology • Previous Articles     Next Articles

Laminated Al2O3/Al Composites Bonded by Epoxy Resin Adhesive

Li Wei-xin Lu Ying Xie Ming-gui Yin Hao-dong Rao Ping-gen   

  1. School of Materials Science and Engineering,South China University of Technology Guangzhou 510640,Guangdong,China
  • Received:2012-09-07 Revised:2012-10-17 Online:2013-02-25 Published:2013-01-05
  • Contact: 饶平根(1965-)，男，教授，博士生导师，主要从事高性能陶瓷研究． E-mail:pgrao@scut.edu.cn
  • About author:李伟信(1980-)，男，博士生，主要从事陶瓷及复合材料性能研究． E-mail：38058449@qq.com
  • Supported by:

    广东省教育部产学研结合项目(2010B090400330)

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Abstract:

Laminated Al2O3/Al ceramic composites were successfully fabricated via a simple molding process at room temperature and 5 MPa,with epoxy resin adhesives as the hinder.Then,the bond strengths of the adhesives with various mass ratios of epoxy resin to hardener,namely 1:0.7,1:0.8,1:0.9 and 1:1.0,were investigated.The resuhs indicate that the bond strength reaches its maximum when the mass ratio is 1:0.8,and that,when A1 foils with their surface ground in different directions are added in the lap joints,the unidirectional grinding may result in higher bond strength.Microstructure analysis results show that the interfaces of Al2 O3/epoxy/Al bond tightlv. Moreover,mechanical test results show that,as compared with Al2 O3 monolith,the fabricated composites haye a slightly lower bending strength but much higher fracture toughness and fracture work,which is attributed to the multiple fractures occurring during the crack propagation.

Key words: aluminum oxide, aluminum, laminated composites, epoxy resin, mould pressing

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