INCREASING WEAR RESISTANCE AND REDUCING THE COEFFICIENT OF FRICTION OF PARTS MADE OF TITANIUM ALLOYS BY DEPOSITING MODIFYING COATINGS ON THE WORKING SURFACES

The effectiveness of using ZrN and TiN coatings to increase wear resistance and to reduce the coefficient of friction on the working surfaces of parts made of titanium alloys are discussed. Even though the TiN coating has a slightly higher hardness, when studied by the pin-on-disk method with an indenter made of 52100 Bearing Steel, the sample with the ZrN coating showed noticeably better wear resistance. The ZrN-coated sample also provides a noticeable reduction in the friction coefficient (up to 0.25) compared to the uncoated sample and the TiN-coated sample. Thus, ZrN coating can be used effectively to increase the wear resistance of contact surfaces of parts made of titanium alloys.