Electron and acoustic emission accompanying oxide coating fracture

Abstract The behavior of an oxide coating during the tensile deformation of its substrate depends on the physical properties of the oxide and the oxide-substrate interface. These properties strongly influence the rate of appearance and extension of cracks in the oxide layer. We investigate the relationship between the growth of cracks in anodized Al 1350 and electron and acoustic emission. We present evidence that both types of emission are strongly influenced by the energy released during crack propagation.