Preparation and Properties of Al2O3/Steel-epoxy Laminated Composites

A series of Al2O3/steel-epoxy laminated composites were prepared by using epoxy resin adhesive as binder via a simple process in a leaky mould at a pressure of 5 MPa. The results indicate that the interfaces of Al2O3/epoxy and steel/epoxy are joined tightly, and the laminated composites have much higher fracture toughness, impact tough- ness and energy consumption than the Al2O3 monolith, as well as having a close strength to Al2O3. The crack propaga- tion behavior indicates that the improvement of toughness and energy consumption attribute to the mechanisms of crack blunting and arresting, crack bridging, interface debonding, ductile deformation of steel-epoxy mesh layer.