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Tribological behaviour of self-lubricating polymercomposite bearing materials during long-time dry sliding
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-5080-0178
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
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2019 (English)In: Tribological behaviour of self-lubricating polymercomposite bearing materials during long-time dry sliding, 2019Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

Thermosets and thermoplastics containing PTFE are used in marine and hydropower applications due to their long service life and self-lubricity in dry and water-lubricated contacts. Their tribological performance is usually extrapolated from short, accelerated tests, which induces risks of inaccurate or incorrect interpretation.

The aim of this study is to investigate the tribological behaviour and development of transfer layers during long sliding tests (160 hours), corresponding to years of operation. To mimic operational shutdowns, the tests were stopped every 20 hours to study the evolution of the surface topography and transfer layers.

The wear rates of both materials decreased significantly with time. For the thermoplastic, COF decreased due to accelerated material transfer after 80 hours, highlighting the importance of long duration tests. The thermoset showed the highest transfer amount after 20 h and cause severe abrasive wear on the counter surface accompanied by a COF increase.

Place, publisher, year, edition, pages
2019.
Keywords [en]
Sliding wear, Friction, Self-lubricating, Polymer composites
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-74161OAI: oai:DiVA.org:ltu-74161DiVA, id: diva2:1320004
Conference
Society of Tribologists and Lubrication Engineers (STLE) 2019
Available from: 2019-06-03 Created: 2019-06-03 Last updated: 2019-09-13

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Total: 58 hits
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  • apa
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  • de-DE
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  • Other locale
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Output format
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  • text
  • asciidoc
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