Abstract
To determine the effect of Cr2N coating on the performance of rolling bearings, this article has studied the tribological and corrosion characteristics of thin-film coatings obtained by the MF method. The tribological characteristics of coatings were studied using the “ball on disk” scheme before and after Cr2N coatings were applied. As the counterbody was used a ball of SchCh15 (without coating). Analysis of cross-sections of wear tracks after testing indicates that there is virtually no wear after coating. The coated sample has a coefficient of friction of 0.14 0.17, i.e. it does not exceed the value of the coefficient of friction (<0.2) required for materials in dry friction pairs. The method of potentiometry was used to determine the corrosion of steel SchCh15 before and after applying a thin-film coating Cr2N.Corrosion tests were performed on a potentiostat-galvanostat P150, in a 4% solution of nitric acid (HNO3). The test results showed that after applying the Cr2N coating, the corrosion rate was 0.191 cm/year, i.e. half as much as that of uncoated steel SchCh15.