**4. Conclusions**

The processes that take place in the cutting area are very complex and difficult for modeling. Till present, there is no any ideal model (both mathematical and mechanical), which would take into account all the factors involved in the cutting process (stresses, temperature, diffusion and chemical processes, etc.), and such a model is unlikely to be created in the near future. Accordingly, an entirely adequate assessment of the working efficiency of a coating can be made only in the course of cutting tests. At the same time, there are several techniques, including those considered in this chapter, which make it possible to predict the performance properties of the coatings with a fairly high probability.

The conducted experiments found the following:


*The Effect of Elemental Composition and Nanostructure of Multilayer Composite Coatings on… DOI: http://dx.doi.org/10.5772/intechopen.93973*
