Fracture behaviour of ceramic laminates with strong linked layers

Multi-component ceramics materials having layered structure possess potential to be more convenient than monolithic ones. Depending on design a number of laminated structures can be distinguished. The most common division is by behaviour of layer interface i.e. with strong or weak interfaces. In this contribution the fracture behaviour of the laminates with strong interface allowing creation of residual stresses within layers will be described. Presence of residual stresses can enhance fracture properties. The alumina and zirconia were the components and electrophoretic deposition was used to prepare the laminate. Fracture behaviour was investigated using three point bending test of SEVNB specimens. Fracture surfaces were reconstructed and crack propagation changes were determined. Influence of residual stresses on fracture behaviour was found and described