TRIBOLOGICAL BEHAVIOUR OF NANOCOATED PISTON RING

Abstract

The nanopartical material coating can help to improve performance and life of Internal combution automobile engines by reducing the frictional wear and friction between IC engine components. In this research study tribological properties of titanium dioxide (TiO₂) nanocoatings for piston ring application are investigated. Nanocoating Samples were prepared by sol-gel process of varying dipping and drying process cycles (40, 50, 60 and 70).In this reaserch studyof frictional wear have carried out on Pin on Disc Tribometer and the tests were taken in  varying load and speed. The obtained results shows that TiO₂Nanocoating exhibits good friction reduction and anti-wear properties andalso decreased the coefficient of friction by 4% and 8% at 60 and 70 dipping-drying process cycles respectively, as compared with conventional chromium platting.In addition, the topography of worn surfaces was analyzed by using Scanning Electron Microscopy (SEM).