Lopata, A., Lopata, V., Kachynska, I. and Solovykh, A. 2025. Research into the possibility of improving the quality of electric arc coatings by nitriding. Problems of Tribology. 30, 2/116 (Jun. 2025), 69–76. DOI:https://doi.org/10.31891/2079-1372-2026-116-2-69-76.