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The Friction Reducing Effect of Square-Shaped Surface Textures under Lubricated Line-Contacts—An Experimental Study

Lu, Ping; Wood, Robert; Gee, Mark; Wang, Ling; Pfleging, Wilhelm

Abstract (englisch):
Surface texturing has been shown to be an effective modification approach for improving
tribological performance. This study examined the friction reduction effect generated by square
dimples of different sizes and geometries. Dimples were fabricated on the surface of ASP2023
steel plates using femtosecond laser-assisted surface texturing techniques, and reciprocating sliding
line contact tests were carried out on a Plint TE77 tribometer using a smooth 52100 bearing steel
roller and textured ASP2023 steel plates. The tribological characterization of the friction properties
indicated that the textured samples had significantly lowered the friction coefficient in both boundary
(15% improvement) and mixed lubrication regimes (13% improvement). Moreover, the high data
sampling rate results indicated that the dimples work as lubricant reservoirs in the boundary
lubrication regime.

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Karlsruhe Nano Micro Facility (KNMF)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3390/lubricants4030026
ISSN: 2075-4442
KITopen ID: 1000063200
HGF-Programm 49.01.09; LK 02
Erschienen in Lubricants
Band 4
Heft 3
Seiten 26
Schlagworte square dimples; laser surface texturing; reciprocating sliding; mixed lubrication
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