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Investigation of the tribological and operational properties of (Mex,Moy,Al1-(x+y))N (Me –Ti, Zr or Cr) coatings
The paper discusses the properties of the (Mex,Moy,Al1-(x+y))N coatings, where Me means titanium, zirconium, or chromium. The studies were focused on the phase and elemental compositions of the coatings, and their hardness and adhesive bond strength to the substrate were found. The investigation of...
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Published in: | Tribology international 2022-01, Vol.165, p.107305, Article 107305 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The paper discusses the properties of the (Mex,Moy,Al1-(x+y))N coatings, where Me means titanium, zirconium, or chromium. The studies were focused on the phase and elemental compositions of the coatings, and their hardness and adhesive bond strength to the substrate were found. The investigation of the tribological properties found that while at temperature of 400 °C, the lowest value of the adhesion component fadh of the coefficient of friction (COF) was registered for the Ti-TiN-(Ti,Mo,Al)N and Cr-CrN-(Cr,Mo,Al)N coatings, then at temperatures of 550 °C and higher, the lowest value of fadh was observed for the Zr-ZrN-(Zr,Mo,Al)N coating. The study of cutting properties during the turning of steel discovered the best wear resistance of a tool with the Zr-ZrN-(Zr,Mo,Al)N coating. Special attention was paid to the diffusion and oxidation processes in the area of the “coating-material being machined” interface. In the mentioned area, the zones of plastic deformation of the coating, formed under the cutting conditions, were discovered and investigated. The studies reveal that plastic deformation deteriorates the barrier properties of the coating layers with respect to the diffusion of iron. The Zr-ZrN-(Zr,Mo,Al)N coating has a balanced combination of high hardness and relatively low value of fadh, due to which it resists well to abrasive and adhesive-fatigue wear.
•Correlation between the tribological properties of the coating and the cutting properties of coated tools.•Mechanism of plastic deformation of the coatings changes depending on their composition.•Plastic deformation of the coating layers reduces the resistance of the coating to diffusion of iron.•Formation of the region of spinodal decomposition of the coating layers under the influence of cutting conditions. |
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ISSN: | 0301-679X 1879-2464 |
DOI: | 10.1016/j.triboint.2021.107305 |