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Tribology Letters

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01.09.2008 | Original Paper

Surface Texture Effect on Friction of a Microtextured Poly(dimethylsiloxane) (PDMS)

verfasst von: Bo He, Wei Chen, Q. Jane Wang

Erschienen in: Tribology Letters | Ausgabe 3/2008

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Abstract

The effect of surface textures on the friction of a poly(dimethylsiloxane) (PDMS) elastomer has been investigated at both macro and microscales using a nanoindentation-scratching system. Friction tests were conducted by a stainless-steel bearing ball with a diameter of 1.6 mm (macroscale tests) and a Rockwell diamond tip with a radius of curvature of 25 μm (microscale tests) under normal loads of 5, 10, and 25 mN and with a sliding speed of 1 μm/s. Coefficient of friction (COF) on the pillar-textured surface was found to be much lower than that on the smooth surface of the same material, and it was reduced by about 59% at the macroscale tests and 38% at the microscale tests. The reduction of COF can be attributed to the reduced contact areas. The use of the JKR model revealed that the adhesion force has less effect on contacts under higher normal loads. COFs in different sliding directions on the groove-textured surfaces were compared, and a friction anisotropic behavior was identified and analyzed.

Vorheriger Artikel Micro-to-Nano Indentation and Scratch Hardness in the Ni–Co System: Depth Dependence and Implications for Tribological Behavior

Nächster Artikel Dry Reciprocating Sliding Friction and Wear Response of WC–Ni Cemented Carbides

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Titel: Surface Texture Effect on Friction of a Microtextured Poly(dimethylsiloxane) (PDMS)
verfasst von: Bo He
Wei Chen
Q. Jane Wang
Publikationsdatum: 01.09.2008
Verlag: Springer US
Erschienen in: Tribology Letters / Ausgabe 3/2008
Print ISSN: 1023-8883
Elektronische ISSN: 1573-2711
DOI: https://doi.org/10.1007/s11249-008-9351-0

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