Journal of Inorganic Materials ›› 2014, Vol. 29 ›› Issue (12): 1339-1344.DOI: 10.15541/jim20140410

• Orginal Article • Previous Articles    

Preparation and Properties of Hot-pressed Al2O3/Al-steel Mesh-Al Laminated Composites

BAI Ming-Min1, LI Wei-Xin1,2, LI Yan-Hui1, ZHAO Wei1, RAO Ping-Gen1   

  1. (1. School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China; 2. Jingde Zhen University, Jingde Zhen 333000, China)
  • Received:2014-08-12 Published:2014-09-28 Online:2014-11-20
  • About author:BAI Ming-Min(1986-), female, candidate of PhD. E-mail: 75403890@qq.com
  • Supported by:
    Science and Technology Program of Guangdong Province of China (2012B091000107)

Abstract:

Al2O3/Al-steel mesh-Al laminated composites with “sandwich” Al-steel mesh-Al layer as interlayer, which was consisted of two Al foils and one steel mesh, were prepared by vacuum hot pressing at 580℃ and 1.5 MPa. The results indicate that the interface of Al2O3/Al is bonded tightly and no reaction is observed. Intermetallic compound (IMC) is detected in Al/steel interface which improves the connection conditions between the steel and Al. The laminated composites have much higher fracture toughness, work-of-fracture than that of the Al2O3 monolith, as well as having a close strength to Al2O3. Crack blunting and arresting, crack bridging, interface debonding, and ductile deformation of “sandwich” Al-steel mesh-Al layer are the main reasons for improving the toughness and work-of-fracture of laminated composites. Low-velocity impact results suggest that the Al2O3/Al-steel mesh-Al laminated composites have good impact resistance.

Key words: alumina, Al-steel, hot pressing, laminated composites, mechanical properties, low-velocity impact

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