Adhesion strength and tribological property of self-lubricating Si/MoS2 nanocoating by pulsed laser deposition method

In this article, Pulsed Laser Deposition (PLD) method has been used for depositing Si/MoS2 coating on Al alloy substrate. The Surface morphology of coating materials has been analysed by Raman spectroscopy, Scanning Electron Microscopy (SEM) and X-ray diffraction (XRD) techniques. Scratch with ramp loading has been conducted and analysed into three regimes to understand the behaviour of coating during the scratch. Scratch results showed that peeling of the coating occurs at critical load 2385 mu N and lateral load 239 mu N. Wear experiments with 4-10 cycles have been conducted at a low load of 100 mu N. The results revealed that the wear rate reduces with an increased number of cycles, which means Si/MoS2 coating possesses the self-lubricating property. It was also observed that ductile and abrasive wear is the main mode of wear mechanism in Si/MoS2 deposited coating.

Automated summary

In this study, the Pulsed Laser Deposition (PLD) method was employed to deposit Si/MoS2 coating on an Al alloy substrate. The surface morphology of the coating materials was analyzed using Raman spectroscopy, Scanning Electron Microscopy (SEM), and X-ray diffraction (XRD) techniques. The scratch test results indicated that the Si/MoS2 coating exhibited self-lubricating properties and primarily underwent ductile and abrasive wear mechanisms.