Title of article :
Tribological behavior of sputter-deposited MoSX/Ni coatings
Author/Authors :
Akbarzadeh, Mehdi Department of Metallurgy and Materials science - Faculty of Engineering - Shahid Bahonar University of Kerman, Kerman, Iran , zandrahimi, Morteza Department of Metallurgy and Materials science - Faculty of Engineering - Shahid Bahonar University of Kerman, Kerman, Iran , Moradpour, Ehsan School of Metallurgy and Materials Engineering - Tarbiat Modares University, Tehran, Iran
Abstract :
In this investigation, MoSx/Ni composite coatings with Ni contents varying from 0 to 23 at. % were deposited onto steel substrate using a DC magnetron sputter process. The MoS2/Ni 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), X-ray diffraction (XRD), nano indentation, and scratch techniques. The tribological behavior of the coatings was investigated using the pin-on-disc test at room temperature. The results showed that adding Ni to MoS2 coatings improved their adhesion to steel substrate and hardness as well as increased the wear performance. The films exhibited a steady state friction coefficient from 0.13 to 0.19 and the main wear mechanisms of the MoSx/Ni coating in air were abrasive, adhesive, and oxidation wear.
Keywords :
MoSX/Ni coating , Tribological properties , PVD , Low friction , Solid lubricant
