Low friction and high solid-solid contact ratio—A contradiction for laser-patterned surfaces?
dc.bibliographicCitation.issue | 35 | eng |
dc.bibliographicCitation.journalTitle | Lubricants | eng |
dc.bibliographicCitation.volume | 5 | |
dc.contributor.author | Bettscheider, Simon | |
dc.contributor.author | Grützmacher, Philipp G. | |
dc.contributor.author | Rosenkrantz, Andreas | |
dc.date.accessioned | 2018-04-16T09:57:56Z | |
dc.date.available | 2019-06-28T14:01:23Z | |
dc.date.issued | 2017 | |
dc.description.abstract | Recording of Stribeck-like curves is a common way to study the effect of laser-patterned surfaces on the frictional efficiency. However, solely relying on the coefficient of friction when identifying the lubrication regime and the underlying working principles can be misleading. Consequently, a ball-on-disc tribometer was combined with an electrical resistivity circuit to simultaneously measure Stribeck-like curves and solid-solid contact ratios for polished and laser-patterned samples. Line-like surface patterns with different periodicities were produced by direct laser interference patterning on steel substrates (AISI304). The reference shows a Stribeck-like behavior well correlating with the contact ratios. The behavior deviates for high sliding velocities (high contact ratios) due to a loss of lubricant induced by centrifugal forces pulling the lubricant out of the contact zone. In contrast, the solid–solid contact ratio of the laser-patterned samples is around 80% for all sliding velocities. Those values can be explained by higher contact pressures and the structural depth induced by the surface topography which make a full separation of the surfaces unlikely. Despite those high values for the contact ratio, laser-patterning significantly reduces friction, which can be traced back to a reduced real contact area and the ability to store oil in the contact zone. | eng |
dc.description.version | publishedVersion | eng |
dc.format | application/pdf | |
dc.identifier.uri | https://doi.org/10.34657/5122 | |
dc.identifier.uri | https://oa.tib.eu/renate/handle/123456789/4706 | |
dc.language.iso | eng | eng |
dc.publisher | Basel : MDPI | eng |
dc.relation.doi | https://doi.org/10.3390/lubricants5030035 | |
dc.rights.license | CC BY 4.0 Unported | eng |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | eng |
dc.subject.ddc | 620 | eng |
dc.subject.other | laser surface patterning | eng |
dc.subject.other | friction reduction | eng |
dc.subject.other | solid–solid contact ratio | eng |
dc.subject.other | lubrication regimes | eng |
dc.title | Low friction and high solid-solid contact ratio—A contradiction for laser-patterned surfaces? | eng |
dc.type | Article | eng |
dc.type | Text | eng |
tib.accessRights | openAccess | eng |
wgl.contributor | INM | eng |
wgl.subject | Ingenieurwissenschaften | eng |
wgl.subject | Umweltwissenschaften | eng |
wgl.type | Zeitschriftenartikel | eng |
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