Dry Sliding Friction Study of ZrN/CrN Multi-Layer Coatings Characterized by Vibration and Acoustic Emission Signals

In this work, we studied single-layer ZrN and CrN coatings, as well as multi-layer ZrN/CrN coatings deposited by the vacuum-arc method on WC-8 wt.% Co substrates. The sliding friction parameters were preset to simulate different operating conditions for coatings, i.e., severe and zero wear regimes....

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Bibliographic Details
Published in:Metals (Basel ) 2022-11, Vol.12 (12), p.2046
Main Authors: Filippov, Andrey, Vorontsov, Andrey, Shamarin, Nickolay, Moskvichev, Evgeny, Novitskaya, Olga, Knyazhev, Evgeny, Denisova, Yuliya, Leonov, Andrei, Denisov, Vladimir, Tarasov, Sergei
Format: Article
Language:English
Subjects:
acoustic emission
Acoustic emission testing
Acoustics
Arc deposition
coatings
Coefficient of friction
Corrosion resistance
Emission analysis
Load
Monolayers
Multilayers
Piston rings
Protective coatings
Sliding friction
Substrates
Synchrotrons
Vibration
wear
Wear resistance
Working conditions
Zirconium nitrides
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Summary:In this work, we studied single-layer ZrN and CrN coatings, as well as multi-layer ZrN/CrN coatings deposited by the vacuum-arc method on WC-8 wt.% Co substrates. The sliding friction parameters were preset to simulate different operating conditions for coatings, i.e., severe and zero wear regimes. During the tests, the friction coefficient, acoustic emission (AE) and vibration signals were recorded. After testing, the worn surfaces of the samples were studied using confocal laser scanning and scanning electron microscopy, elemental microanalysis and synchrotron XRD. Estimation of vibration accelerations and AE energy turned out to be very effective means of monitoring the wear of coatings, while median AE frequency turned out to be a less informative one. With the increase in the normal load applied on the samples after testing at zero wear regime, the coefficient of friction increased and wear transition to severe wear regime occurred but vibration acceleration decreased. The multi-layer ZrN/CrN coatings demonstrated much higher wear resistance as compared to those of single-layer ZrN and CrN.
ISSN:2075-4701
2075-4701
DOI:10.3390/met12122046