Structure and tribological properties of MoN cathodic-arc coating

The influence of the deposition mode and test conditions on the structure and tribological properties of cathodic-arc MoN coatings was investigated. At bias voltages in the range from −30 to −70 V, 10 μm thick coatings based on hexagonal molybdenum nitride δ‑MoN with high nanohardness (up to 34.7 GP...

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Veröffentlicht in:Materials science (New York, N.Y.) Jg. 60; H. 6; S. 792 - 799
Hauptverfasser: Klimenko, I. O., Belous, V. A., Podhurska, V. Ya, Shved, M. M., Tolmachova, G. M., Kolodiy, I. V., Ovcharenko, V. D., Ishchenko, M. G., Babayev, I. M., Kuprin, O. S.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: New York Springer US 01.05.2025
Springer Nature B.V
Schlagworte:
Aluminum oxide
Arc deposition
Bias
Cathodic coating (process)
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium nitride
Coatings
Contact stresses
Friction
Materials Science
Mechanical properties
Modulus of elasticity
Molybdenum
Molybdenum oxides
Nanohardness
Nitrogen
Nuclear power plants
Oxidation
Protective coatings
Solid Mechanics
Structural Materials
Substrates
Temperature
Thermal instability
Thermal transformations
Titanium nitride
Tribology
Turbines
Wear resistance
Cathodic-arc deposition
Bias voltage
Counterbody material
Test temperature
Wear resistance
Structure
MoN coating
ISSN:1068-820X, 1573-885X
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Zusammenfassung:The influence of the deposition mode and test conditions on the structure and tribological properties of cathodic-arc MoN coatings was investigated. At bias voltages in the range from −30 to −70 V, 10 μm thick coatings based on hexagonal molybdenum nitride δ‑MoN with high nanohardness (up to 34.7 GPa) and elastic modulus (up to 471 GPa) are formed on a 15Kh12VNMF steel substrate. Tests of “coated plate–ball” tribopairs using ∅ 10 mm ceramic (Al 2 O 3 ) and steel (ShKh15) balls without and with 10 μm thick CrN, TiN and MoN coatings show that the coating deposited at a bias voltage of −70 V has the best properties; the “plate with MoN coating–ball with TiN coating” pair is optimal by the tribological characteristics at 20 °C. At 500 °C the wear resistance of the MoN coating decreases rapidly, which is associated with its thermal instability and transformation into molybdenum oxide under the influence of contact stresses.
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ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-025-00951-6