Comprehensive wear model for tools with nanocomposite PVD coatings

The present paper summarises the methods of physical vapour depositions as well as importance and possible performance of nanocomposite coatings. After a detailed summary of testing conditions this article briefly introduces the gained results and analyses the wear mechanisms of end mills which are deposited with various coating layers. This paper contains a comprehensive wear model, which could describe several micromechanisms of high temperature tribological system. With clearing up the intensity of degradation (used up) process worn tools can be modelled under several machining conditions. Some connections have been worked out for describing several symptoms (e.g. increasing feed forces during machining) in conjunction with tool wear. Lastly the paper presents the most important functions for tool monitoring of end milling cutters.