A Simple Laminated Alumina Based Composite with High Work of Fracture

Abstract:

A kind of laminated composite named Al₂O₃/Nylon/Al with high work of fracture was prepared by a simple process using epoxy resin adhesives as binder in a leaky mold at a pressure of 5 MPa. Light microscopy and scanning electron microscopy were employed to observe the microstructures and crack propagation of the laminated composites. The flexural strength and fracture toughness were measured through three-point bending test, and the work of fracture of the laminated composite was calculated from load-displacement curves of three-point bending test. The experimental results show the composite have low Young's modulus and flexural strength, however, the work of fracture of the laminated composite appears to be high of 2850 J/m², and the fracture toughness reaches about 11 MPa•m^1/2. Analysis of microstructure and crack propagation reveals that the failure of the laminated composite exhibit distinctive characteristic.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 484-489
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.484
• Online since: June 2012
• Authors: Wei Xin Li, Ying Lu, Ping Gen Rao, Xiu Lin Huang
• Keywords: Al₂O₃/Nylon/Al, Epoxy Resin Adhesives, Laminated Composite, Work of Fracture

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