Author/Authors :
Sharma، نويسنده , , Neha and Kumar، نويسنده , , N. and Dash، نويسنده , , S. and Das، نويسنده , , C.R. and Subba Rao، نويسنده , , R.V. and Tyagi، نويسنده , , A.K. and Raj، نويسنده , , Baldev، نويسنده ,
Abstract :
Scratch resistance and tribological properties of hydrogenated and hydrogen free diamond like carbon (DLC) coatings were investigated in ambient atmosphere under unlubricated and lubricated conditions using layers of oleic (C18H34O2) and linoleic acid (C18H32O2). Scratch resistance property improved in hydrogenated DLC while using linoelic and oleic acids compared to unlubricated condition. Coefficient of friction (CoF) was found to decrease under ambient dry conditions, while under lubrication condition, it was found to increase with normal load. At low load of 1 N, hydrogenated and hydrogen-free coatings show a super low CoF of 0.001 and high wear resistance with oleic acid.
Keywords :
fatty acid , DLC coatings , Scratch resistance , friction coefficient
