Smirnov, I., Chornyi, A., Lysak, V., Kaplun, P., Drobot, O., Poberezhnyi, M., & Rutkovskyi, A. (2022). Microstructure and wear resistance of modified surfaces obtained by ion-plasma nitriding of 40ХН2МА steel. Problems of Tribology, 27(3/105), 89–95. https://doi.org/10.31891/2079-1372-2022-105-3-89-95