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Thin-film and marginal lubrication of PolyEtherKetone-steel sliding contacts at high temperature and high speed
Dyson, C.J. Fox, M.F. Hopkins, W.A.
Dyson, C.J.
Fox, M.F.
Hopkins, W.A.
Publication Date
2018
End of Embargo
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© 2018 Taylor & Francis. This is an Author's Original Manuscript of an article published by Taylor & Francis in Tribology Transactions on 21 March 2018 available online at http://www.tandfonline.com/10.1080/10402004.2017.1416435
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2017-12-08
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Department
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Embargo end date
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Abstract
PolyEtherKetone (PEK) is a suitable material for tribological systems which specifically require
the properties of high chemical resistance, low component weight, seizure resistance under
starved lubrication conditions and operation at higher temperatures than many other engineering
polymers can survive. PEK is used with a liquid lubricant at high temperatures and
velocities to reduce friction and also to control unstable friction and wear, particularly in the
region of the material’s glass transition temperature, Tg.
Intermittent and marginal lubrication using representative high temperature synthetic lubricants
was applied to high speed, high temperature PEK/steel sliding contacts to determine the
effectiveness of lubrication under these conditions. Variations in the stability of the thin lubricant
films were observed, particularly under different load conditions. Under low load conditions,
the lubricant polarity and the related ability to form a film in the contact was important.
Under high load conditions, the thermal stability of the lubricant became more important in
retaining stability in the friction and wear mechanisms. Whilst not ideal practice, marginal lubrication
of PEK-steel sliding contacts can be achieved by selection of an appropriate lubricant,
even in the glass transition region of PEK.
Version
Accepted manuscript
Citation
Dyson CJ, Priest M, Fox MF et al (2018) Thin-film and marginal lubrication of PolyEtherKetone-steel sliding contacts at high temperature and high speed. Tribology Transactions. 61(5): 793-807.
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Article