Comparison of corrosion, physico-mechanical and wear properties of TiN, ZrN, Ti_xZr_1-xN and Ti_1-xAl_xN coatings

¹ Perm National Research Polytechnic University, Department of Innovative Technologies of Mechanical Engineering, 614990 Perm, Russia
² Volga State University of Technology “Volga Tech”, department “Design and manufacture of radio equipment”, 424000, the Republic of Mari El, Yoshkar-Ola, Russia

^* Corresponding author: annkam789@mail.ru

Abstract

In this paper, TiN, ZrN, Ti_xZr_1-xN, Ti_1-xAl_xN coatings were obtained by cathodic arc evaporation at optimal technological parameters. The corrosion properties of these coatings were investigated in 5% NaOH. The coating ZrN deposited by cathodic arc evaporation slows down the corrosion in the 5% NaOH by over 3,000 times, and the passive current – by 2,000 times. The Ti_xZr_1-xN coating has the best physico-mechanical properties: microhardness Н = 36 GPa, Young’s modulus Е = 312 GPa, elastic recovery W_e = 78 %, resistance to elastic failure strain H/E = 0.12, and resistance to plastic strain H³/E² = 1.31 GPa. The Ti_1-xAl_xN coating has the best wear properties: friction coefficient 0.09, counterbody wear intensity by volume 0.43•10^-8 mm³/Nm, coating wear intensity by volume 0.05•10^-4 mm³/Nm and by mass•0.03•10^-5 mg/Nm. Multilayer coating TiN-Ti_xZr_1-xN-Ti_1-xAl_xN-ZrN (ZrN-top layer) has a complex of high physico-mechanical and wear properties in 5% NaOH.