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- Article name
- Multilayered two-, three and multi-component nitride coatings with gradient of structure, phase and element composition, and improved physical-mechanical, tribological and corrosion properties in neutral chloride and alkaline solutions
- Authors
- KAMENEVA A. L., , annkam789@mail.ru, Federal State Budget Institution of Higher Education "National Research Perm Polytechnic University", Perm, Russia
- Keywords
- multilayer coatings / tool and friction pairs / PVD methods / phase and elemental composition / mechanical / wear and corrosion properties
- Year
- 2018 Issue 3 Pages 73 - 81
- Code EDN
- Code DOI
- Abstract
- Coatings are designed to increase the longevity of tools and friction pairs, including sliding bearings of new generation engines, used in neutral chloride and alkaline solutions. Physical-mechanical and tribological properties, corrosion behavior of multilayer two-, three- and multi-component nitride coatings on different substrates (HG30, X165CrMoV12, and USt 37-2-DIN) have been studied. Dependencies between the coatings properties and their phase and elemental composition were established. The multilayer two-component TiN coating based on phase c-TiN obtained by pulsed magnetron sputtering slows down the corrosion and passive current in 3 % NaCl by more than 2500 times. The stoichiometric ZrN coating consisting entirely of the c-ZrN phase deposited by cathodic arc evaporation slows down the corrosion current in the 5 % NaOH by more than 3000 times, and the passive current - by 2000 times. The multilayer TiN-ZrN coating with phase composition gradient (c-TiN, c-TiZrN2, and δ-Zr3N4), Zr and Ti gradient possess the best complex of physical-mechanical, tribological properties and corrosion resistance in neutral chloride and alkaline solutions. TiN-ZrN coating slows down the corrosion and passive current in 3 % NaCl and in 5 % NaOH up to 200 and 300 times, respectively. Multilayer coating with three-component ((Ti, Zr)N; (Ti, Al)N) or multi-component ((Ti, Zr, Al)N) layers exhibit, as a rule, worse corrosion resistance compared to two-component coatings.
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