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

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 femt...

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Bibliographic Details
Published inLubricants Vol. 4; no. 3; p. 26
Main Authors Lu, Ping, Wood, Robert J K, Gee, Mark G, Wang, Ling, Pfleging, Wilhelm
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2016
Subjects
Bearing steels
Chromium steels
Dimpling
Friction
laser surface texturing
Lubricants
Lubrication
mixed lubrication
Plates
reciprocating sliding
square dimples
Steels
Texture
Tribology
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Summary: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.
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content type line 23
ISSN:2075-4442
2075-4442
DOI:10.3390/lubricants4030026