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Evolution and wear of fluoropolymer transfer films
University of Florida, USA.ORCID iD: 0000-0002-2473-9171
2015 (English)In: Tribology letters, ISSN 1023-8883, E-ISSN 1573-2711, Vol. 57, no 2, article id 9Article in journal (Refereed) Published
Abstract [en]

Polytetrafluoroethylene (PTFE) is a solid lubricant known for its low friction coefficient and high wear rate. When filled with a low volume percent of alumina particles (5 wt%), its wear rate is decreased over four orders of magnitude. The development of a thin, uniform and well adhered transfer film during sliding is partially responsible for this decrease in wear rate by creating a low shear interface and forming a protective layer between the PTFE/alumina sample and metal countersample. In this work, a ''striped'' transfer film was generated by sliding up to one million reversals over a gradually decreasing stroke length. Wear and friction experiments were performed on a microtribometer to determine the robustness of the transfer film. Interferometry and profilometry were used to measure the height and wear of the film. Microscopy was used to investigate the morphology of the transfer film over sliding distance. 

Place, publisher, year, edition, pages
Springer New York LLC , 2015. Vol. 57, no 2, article id 9
Keywords [en]
Alumina, Friction, Polytetrafluoroethylene, Transfer film, Wear, Polytetrafluoroethylenes, Solid lubricants, Tribology, Wear of materials, Alumina particles, Low friction coefficients, Orders of magnitude, Polytetrafluoroethylene (PTFE), Protective layers, Sliding distances, Wear and friction, Interfaces (materials)
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:ri:diva-56342DOI: 10.1007/s11249-014-0453-6Scopus ID: 2-s2.0-84923634279OAI: oai:DiVA.org:ri-56342DiVA, id: diva2:1591287
Available from: 2021-09-06 Created: 2021-09-06 Last updated: 2023-05-23Bibliographically approved

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Harris, Kathryn L

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