Effects of Nanoscale Surface Texturing on Self-Healing of Boundary Lubricant Film via Lateral Flow

Authors: Hsiao, Erik¹; Barthel, Anthony¹; Kim, Seong²

Source: Tribology Letters, Volume 44, Number 2, November 2011 , pp. 287-292(6)

Publisher: Springer

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Abstract:

Surface texturing of silicon substrates with nanowells can change the lubricious performance of cationic polymer lubricant (CPL), a bound-and-mobile lubricant consisting of a polydimethylsiloxane (PDMS) backbone with covalently bonded quaternary ammonium iodide cations. The filled nanowell reservoirs enhance self-healing within the contact track since they can readily provide CPL to near-by regions. However, once this initial reservoir is completely consumed and depleted, the empty nanowells interfere with long-distance lateral flow process since they act as a reservoir that needs to be filled during the flow.

Keywords: Self-healing; Surface texturing; Boundary lubrication friction; Boundary lubrication wear; Nanotribology

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s11249-011-9847-x

Affiliations: 1: Department of Chemical Engineering, Pennsylvania State University, University Park, PA, 16802, USA 2: Department of Chemical Engineering, Pennsylvania State University, University Park, PA, 16802, USA, Email: shkim@engr.psu.edu

Publication date: 2011-11-01