Effect of Substrate Bias Voltage and Ti Doping on the Tribological Properties of DC Magnetron Sputtered MoSx Coatings
Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJMSEI-16-2_002
تاریخ نمایه سازی: 1 اسفند 1401
Abstract:
Molybdenum disulfide (MoS۲) is one of the most widely used solid lubricants. In this work, composite MoSx/Ti coatings were deposited by direct-current magnetron sputter ion plating onto plain carbon steel substrates. The MoSx/Ti ratio in the coatings was controlled by sputtering the composite targets. The composition, microstructure, and mechanical properties of the coatings were explored using an energy dispersive analysis of X-ray (EDX), Xray diffraction (XRD), and nano indentation and scratch techniques. The tribological behavior of the coatings was investigated using the pin-on-disc test at room temperature. With the increase of doped titanium content, the crystallization degree of the MoSx/Ti composite coatings decreased. The MoSx/Ti coatings showed a maximum hardness of ۱۳ GPa at a dopant content of ۵ at% Ti and the MoSx/Ti composite films outperformed the MoSx films. Moreover, the films exhibited a steady state friction coefficient from ۰.۱۳ to ۰.۱۹ and the main wear mechanisms of the MoSx/Ti coating in air were abrasive, adhesive, and oxidation wear.
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Authors
M. Akbarzadeh
Department of Metallurgy
M. Zandrahimi
Department of Metallurgy
E. Moradpur
School of Metallurgy and Materials Engineering, University of Tehran, Tehran, Iran
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