|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Surface Interactions in Materials
||Understanding the Effects of Lubricants/Coatings on Friction and Wear during Reciprocatory Sliding Motion at High Contact Pressures
||Dewika Mishra, Farjana J. Sonia, Muntashir Hayat, Ranjan Kathuria, Dinesh Srivastava, G. N. Ganesha, Utpal Singha, Amartya Mukhopadhyay
|On-Site Speaker (Planned)
In order to understand aspects concerning friction and wear damages (including roles/effectiveness of lubricants/coatings) at high contact pressures, as relevant to metal working processes like cold pilgering, laboratory scale friction/wear tester has been designed and fabricated to replicate the ‘tribo-parameters’ (in terms of contact geometry, pressure, stroke length, frequency) of processes occcurring at inner walls of tubes being pilgered. Accordingly, inner surfaces of extruded zircaloy-4 tubes were subjected to linear reciprocating sliding wear against outer surfaces of tool steel half cylinders at contact pressure of ~1 GPa. Co-efficient of friction was not affected in the absence/presence of any tested ‘lubricant’/‘coating’ (viz., conventional oil, as well as well-ordered graphene films), indicating that they do not have true surface effect at such high contact pressure. By contrast, unlike oil-based lubricant, graphene-based ‘lubricants’/‘coatings’ supressed the evolutions of surface roughness and wear rates upon interactive sliding, primarily due to minimization of sub-surface damage.
||Planned: Supplemental Proceedings volume