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- Article name
- Influence of the hard alloy thermal state on the structural state, physical-mechanical and tribological properties of the Ti1-xAlxN coating
- Authors
- KAMENEVA A. L., , annkam789@mail.ru, Federal State Budget Institution of Higher Education "National Research Perm Polytechnic University", Perm, Russia
KAMENEVA N. V., , knv143@mail.ru, Perm National Research Polytechnic University, Perm, Russia
- Keywords
- Ti1-xAlxN coating / hard alloy / thermal state / physical-mechanical properties / tribological properties
- Year
- 2020 Issue 4 Pages 52 - 58
- Code EDN
- Code DOI
- Abstract
- The structural state effect of the WC-Co hard alloy (the size of plasticity zone and WC grains) and temperature on its hardness has been studied. The maximum heating temperature of the hard alloy VK8 before the coating deposition should not exceed 790 K to maintain its hot hardness. The formation stages of the Ti1-xAlxN coating depending on the hard alloy temperature are revealed. The formation temperature range of a continuous nanostructured Ti1-xAlxN coating corresponds to 670-890 K. An increase in the structure formation temperature of the Ti1-xAlxN coating is achieved by rising the bias voltage on the substrate from 200 to 280 V. The dependence of the physical-mechanical and tribological properties of the Ti1-xAlxN coating on the thermal state of the hard alloy has been established. The hardening efficiency of carbide tools increases by the hot hardness preservation of the hard alloy and the formation on its surface nanostructured coating Ti1-xAlxN, which has a complex of high physical-mechanical properties with a minimum friction coefficient.
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