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Investigation of material transfer in sliding friction-topography or surface chemistry?
Uppsala Univ, Angstrom Tribomat Grp, Box 534, S-75121 Uppsala, Sweden..
Uppsala Univ, Angstrom Tribomat Grp, Box 534, S-75121 Uppsala, Sweden..
Dalarna University, School of Technology and Business Studies, Materials Technology. Uppsala Univ, Angstrom Tribomat Grp, Box 534, S-75121 Uppsala, Sweden. (Tribologi)
Uppsala Univ, Angstrom Tribomat Grp, Box 534, S-75121 Uppsala, Sweden..
2016 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 100, 213-223 p.Article in journal (Refereed) PublishedText
Abstract [en]

To differentiate between the roles of surface topography and chemical composition on influencing friction and transfer in sliding contact, a series of tests were performed in situ in an SEM. The initial sliding during metal forming was investigated, using an aluminum tip representing the work material, put into sliding contact with a polished flat tool material. Both DLC-coated and uncoated tool steel was used. By varying the final polishing step of the tool material, different surface topographies were obtained. The study demonstrates the strong influence from nano topography of an unpolished DLC coated surface on both coefficient of friction and material transfer. The influence of tool surface chemistry is also discussed.

Place, publisher, year, edition, pages
2016. Vol. 100, 213-223 p.
Keyword [en]
Sliding, Topography, Coating, Transfer
National Category
Materials Engineering
Research subject
Steel Forming and Surface Engineering
Identifiers
URN: urn:nbn:se:du-22664DOI: 10.1016/j.triboint.2016.01.022ISI: 000379279600025OAI: oai:DiVA.org:du-22664DiVA: diva2:950991
Available from: 2016-08-04 Created: 2016-08-04 Last updated: 2016-08-04Bibliographically approved

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