Measurements of the fracture energy of the coating/substrate interfacial region through radial-notched cylindrical specimens

摘要: Measurements of the adhesive strength are normally conducted using direct pull test. However, in test failure often occurs at location polymeric used to prepare specimen when coating/substrate interface is stronger than adhesive. Even does occur interface, provides ill-defined properties since measured strongly affected by strength-controlling defects present before In this paper we have developed a new geometry that ensures propagation crack along or interfacial region, depending on and region. Furthermore, well-defined properties, i.e. fracture energy The proposed validated oxide coatings steel substrates prepared via thermal spray technique.