Wear for low friction-running-in and tribochemical wear

It is well-known that beginning of sliding so-called running-in is an important for stable low friction by formation of well- conformed interface with suitable tribo-chemical product. To form such functional interface, initial wear in the conforming proceb in the early stages of friction is key to lead for changing in the material, physical and chemical properties of the surface. Further, initial wear during running-in leads to continuous self-formation of low friction interface due to tribo-chemical wear at the stable low friction stage. The running-in control technique for self-forming such low friction interface more surely and stably is a low friction technology. The surface texture that can actively control tribo-chemical reaction introduced in this paper is one of the promising low friction technologies..