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Meeting 2018 TMS Annual Meeting & Exhibition
Symposium Surface Interactions in Materials
Presentation Title Understanding the Effects of Lubricants/Coatings on Friction and Wear during Reciprocatory Sliding Motion at High Contact Pressures
Author(s) Dewika Mishra, Farjana J. Sonia, Muntashir Hayat, Ranjan Kathuria, Dinesh Srivastava, G. N. Ganesha, Utpal Singha, Amartya Mukhopadhyay
On-Site Speaker (Planned) Dewika Mishra
Abstract Scope 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.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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