Journal of South China University of Technology(Natural Science) >
Laminated Al2O3/Al Composites Bonded by Epoxy Resin Adhesive
Received date: 2012-09-07
Revised date: 2012-10-17
Online published: 2013-01-05
Supported by
广东省教育部产学研结合项目(2010B090400330)
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
Li Wei-xin Lu Ying Xie Ming-gui Yin Hao-dong Rao Ping-gen . Laminated Al2O3/Al Composites Bonded by Epoxy Resin Adhesive[J]. Journal of South China University of Technology(Natural Science), 2013 , 41(2) : 117 -122 . DOI: 10.3969/j.issn.1000-565X.2013.02.019
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