Please use this identifier to cite or link to this item: https://doi.org/10.1109/TMAG.2003.808944
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dc.titleTopographical and tribo-chemical studies of contact sliding on ultrathin perfluoropolyether film
dc.contributor.authorSinha, S.K.
dc.contributor.authorChoi, J.
dc.contributor.authorKato, T.
dc.date.accessioned2014-06-17T06:37:00Z
dc.date.available2014-06-17T06:37:00Z
dc.date.issued2003-03
dc.identifier.citationSinha, S.K., Choi, J., Kato, T. (2003-03). Topographical and tribo-chemical studies of contact sliding on ultrathin perfluoropolyether film. IEEE Transactions on Magnetics 39 (2 I) : 875-880. ScholarBank@NUS Repository. https://doi.org/10.1109/TMAG.2003.808944
dc.identifier.issn00189464
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/61594
dc.description.abstractThis paper presents data from topographical and tribo-chemical measurements that were carried out after wear tests on perfluoropolyether (PFPE) films dip-coated on diamond-like-carbon (DLC). The wear experiments were carried out using a glass ball slider sliding on PFPE lubricated (∼2 nm) magnetic hard disks under a normal load of 20 mN and at different sliding speeds. The test conditions were maintained such that only the PFPE film was worn and no wear of either the DLC or the magnetic layer of the disk was observed. After the wear test, the worn PFPE films were analyzed in two ways. The first analysis focused on the changes in the chemical compositions of the film due to sliding operation. The analytical test was carried out using X-ray photoemission spectroscopy. The second analysis observed the topographical changes in the wear zone due to sliding operations. The topography was measured using an ellipsometer. Furthermore, a surface reflectivity analyzer was used to quantitatively compare the features of the worn and unworn zones on the film. From these observations we conclude that contact sliding removes the PFPE film causing some chemical compositional changes which might be related to tribo-chemistry of the surface. On the topography, there is a large roughening of the PFPE film due to sliding. This increased roughness of the film is stable even after leaving the sample for several weeks. Annealed and as-lubricated samples have different effects on the topographical changes.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1109/TMAG.2003.808944
dc.sourceScopus
dc.subjectNano-lubrication for computer hard disks
dc.subjectTopographical changes of PFPE
dc.subjectTribo-chemistry of PFPE
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1109/TMAG.2003.808944
dc.description.sourcetitleIEEE Transactions on Magnetics
dc.description.volume39
dc.description.issue2 I
dc.description.page875-880
dc.description.codenIEMGA
dc.identifier.isiut000181898100046
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