Diamond like carbon coating on SS 201 and tribological testing

Abstract

Stainless steel are extensively used in numerous applications such as chemical and food processing industries, petrochemicals, ships, airplanes, automobiles and biomedical applications owing to their high mechanical, wear and corrosion resistance properties. Still there is a great relevance in vast industrial applications due to have their wear and corrosion problem and the result in degradation and failure of service life of many components. In this study to improve mechanical and tribological properties hydrogenated Diamond like carbon (DLC) thin films on stainless steel AISI 201 were synthesized using chemical vapor deposition (CVD), and characterized. Scanning Electron Microscope (SEM) analysis was done for morphology analysis of deposited substrates which revealed that deposited substrate formed a stable structure of carbon cluster due to decrease in surface free energy, EDS analysis was performed to know the chemical composition of deposited substrates and pinon- disc test method was used for the analysis of tribological properties of deposited materials and revealed the result that less coefficient of friction (COF) and high wear resisting properties are found which was shown in the graph. To know the improvement of hardness of hydrogenated DLC coating Rockwell hardness tester was used and revealed the result that hardness significantly improved.