Investigation and Development of Coatings Based on Intermetallics of Ti-Al System Alloyed with Zr by Vacuum-Arc Plasma

Cutting properties of the instrument are determined by a complex of factors. Multilayer coatings are characterized by a smooth transition of physical, mechanical and thermal properties of layers from the tool base to the upper boundary layer of coatings. In this paper is proposed to apply composite multilayer coatings based on intermetallides of the Ti-Al system alloyed with Zr to improve the performance properties of the grooving tools working at shock loads. In the work, the influence of technological parameters on the chemical composition of coatings alloyed with Zr was studied. The mechanical properties of alloyed coatings based on intermetallics of the Ti-Al system depending on the percentage contents of Zr are studied. For to determine the coefficients of friction and wear resistance were carried out Tribological tests by the Nanovea Tribometr equipment. Based on the results of the studies, the pilot lot of the slotting tool was processed and production tests were carried out. The results of the production tests showed an increase in tool life of 7 times compared to the original tool without coating. nitride.