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Research Article | Open Access

Tribological behavior of TiN, AlTiN, and AlTiCrN coatings in atmospheric and vacuum environments

Youn-Hoo HWANG1, Kuk-Jin SEO1, Tae-Hyeong KIM1, You Jin MIN1, Yuzhen LIU1,2, Dae-Eun KIM1( )
Department of Mechanical Engineering, Yonsei University, Seoul 03722, Republic of Korea
Department of Mechatronics and Energy Engineering, Ningbo Tech University, Ningbo 315211, China
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Abstract

In this study, the tribological characteristics of TiN, AlTiN, and AlTiCrN coatings sliding against a SUS420J1 stainless steel pin were investigated in atmospheric and vacuum environments. The coatings were deposited on SUS440C substrates using the arc-physical vapor deposition technique. The friction and wear behavior of the coatings were evaluated based on the systematic analyses of the friction coefficient data as well as the physical and chemical state of the wear track. The results revealed that the friction coefficients of the SUS440C specimen and AlTiCrN coatings increased, whereas those of the TiN and AlTiN coatings decreased when the environment was changed from atmospheric to vacuum. It was confirmed that the formation of an oxide layer and adsorption of oxides on the surface were dominant factors that influenced the tribological behavior in the atmospheric environment. On the other hand, the compatibility, oxidation inhibition, and droplets of the surface mainly affected the frictional characteristics in the vacuum environment. The results of this work are expected to aid in the selection of proper coating materials for tribological systems operating in a vacuum.

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frictionwearcoatingvacuumTiN

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Friction
Volume 12 Issue 11,
November 2024
Pages 2611-2626
DOI: 10.1007/s40544-024-0930-3

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HWANG Y-H, SEO K-J, KIM T-H, et al. Tribological behavior of TiN, AlTiN, and AlTiCrN coatings in atmospheric and vacuum environments. Friction, 2024, 12(11): 2611-2626. https://doi.org/10.1007/s40544-024-0930-3

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Received: 17 October 2022
Revised: 06 July 2023
Accepted: 10 May 2024
Published: 29 August 2024
© The author(s) 2024.

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