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- Article name
- Dependence of tribological properties of Zr1-xAlxN coatings on its elemental and phase composition
- Authors
- KAMENEVA A. L., , annkam789@mail.ru, Federal State Budget Institution of Higher Education "National Research Perm Polytechnic University", Perm, Russia
GILEV V. G., , xray@pm.pstu.ac.ru, Research center of powder materials science of Perm National Research Polytechnic University, Perm, Russia
KLOCHKOV A. Yu., , sanyaglobal@gmail.com, Perm National Research Polytechnic University, Perm, Russia
KAMENEVA N. V., , knv143@mail.ru, Perm National Research Polytechnic University, Perm, Russia
SUSHENTSOV N. I., , sniyola@mail.ru, Volga State Technological University, Yoshkar-Ola, Mari El Republic, Russia
STEPANOV S. A., , stepan_mail@mail.ru, Volga State Technological University, Yoshkar-Ola, Mari El Republic, Russia
- Keywords
- Zr1-xAlxN coating / phase and elemental composition / tribological properties
- Year
- 2020 Issue 1 Pages 58 - 63
- Code EDN
- Code DOI
- Abstract
- The tribological properties of Zr1−xAlxN coatings are experimentally determined as a function of their phase and elemental composition, which varies depending on the nitrogen content in the gas mixture during deposition. In was found that critical force Fcrit, the indenter penetration depth l and, as a result, its maximum resistance to local loads and elastic recovery after unloading, depend on the Al content and the volume fraction of the wurtzite phase w-Zr3AlN in the coating. At a low Al content (x £ 0.5), a single-phase Zr1-xAlxN coating forms on the basis of the orthorhombic phase d-Zr3N4, while at x > 0.50 a nanocomposite structure is formed with a mixture of orthorhombic, cubic and wurtzite phases. The maximum content of the energetically favorable wurtzite phase w-Zr3AlN in the coating contributes to an increase in its total free energy, increasing the thermodynamic stability of the coating and resistance to wear at high temperatures. Zr0.28Al0.72N coating with a maximum content of Al = 55.44 at. % and wurtzite w-Zr3AlN phase with Vw-Zr3AlN = 27.56 % has a minimum friction coefficient f = 0.05, a minimum degree of coating failure l = 15 μm, and, as a result, maximum resistance to local loads and elastic recovery of the coating after unloading.
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