This paper presents research results of the impact of high-energy krypton ions on structure and mechanical properties of ZrTiN coatings. The ZrTiN coatings were synthesized by the magnetron sputtering method on the substrates from Cr18Ni10Ti steel. Samples irradiated by 84Kr14 with energy 125 MeV to fluence 1016 cm−2 at room and 600°C temperatures. It established that irradiation resulted in significant changes in the surface structure, i.e. appearance of the coral-like structure. Formation of coral-like structure leads to degradation of mechanical properties such as hardness and corrosion resistance. Most significant changes surface structure and properties of coating observed after irradiation at room temperature.