STRUCTURE AND PROPERTIES PVD AND CVD COATINGS DEPOSITED ONTO EDGES OF SINTERED CUTTING TOOLS

In papier were presented some results of structure and properties research Ti(C,N) coating by obtained by PVD method and Ti(C,N)+TiN coating obtained by CVD method deposited onto substrate sintered carbides WC-Co type and sialon tool ceramics. Cutting tools deposited investigating coatings are characterized a huge hardness (2442 divided by 3009 HV0.05) and high machinability in comparison with edges did not cover at all. There were used following searching techniques such as: observation of fractures and a topography of surface into the scanning electron microscope, analysis chemical composition by GDOES method, phase composition was determined by means of the X-ray diffractometer: standard and grazing incidence X-ray diffraction methods in order to characterize some finding structures into a performed work. The mechanical properties were determined on basis of following research: a measurement of hardness by Vickres's method, a measurement of roughness, adhesion by Scratch Test method. Cutting ability were defined on basis of technological cutting trials.