Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions

The effects of counterface surface roughness on the friction and wear behaviors of polyether ether ketone (PEEK) are studied using blocks on a ring wear tester under oil-lubricated conditions. The blocks are made of unfilled PEEK and a PEEK composite that is 30 wt% carbon fiber. The ring is made of...

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Main Authors: Tomoharu Akagaki, Masahiko Kawabata
Format: Article
Language:English
Published: Japanese Society of Tribologists 2016-06-01
Series:Tribology Online
Subjects:
Online Access:https://www.jstage.jst.go.jp/article/trol/11/3/11_494/_pdf/-char/en
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author Tomoharu Akagaki
Masahiko Kawabata
author_facet Tomoharu Akagaki
Masahiko Kawabata
author_sort Tomoharu Akagaki
collection DOAJ
description The effects of counterface surface roughness on the friction and wear behaviors of polyether ether ketone (PEEK) are studied using blocks on a ring wear tester under oil-lubricated conditions. The blocks are made of unfilled PEEK and a PEEK composite that is 30 wt% carbon fiber. The ring is made of forged steel (SF540A) and its surface roughness varies between 0.04 to 1.86 μm Ra; the sliding velocity and load are 10.2 m/s and 588 N, respectively. Results indicate that both the friction coefficient and each block’s specific wear rate increase from low to high values when the ring’s surface roughness exceeds a certain value (0.2–0.4 μm Ra). In high friction and wear regions, significant differences exist in the friction and wear behaviors of both PEEK and the PEEK composite. The PEEK composite shows a significantly lower friction coefficient and wear rate as compared to PEEK. However, the PEEK composite causes greater wear of the ring, though the extent to which the ring wears is dependent on the ring’s surface roughness. Wear particles and wear scars on both materials are observed and analyzed using a scanning electron microscope and an energy-dispersive X-ray spectroscope. The wear mechanisms are then discussed.
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spelling doaj.art-f8c63c3bff444a49900e326555bb641b2022-12-21T20:38:08ZengJapanese Society of TribologistsTribology Online1881-21982016-06-0111349450210.2474/trol.11.494trolEffects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated ConditionsTomoharu Akagaki0Masahiko Kawabata1Department of Mechanical Engineering, Hachinohe National College of TechnologyTribotex IncorporationThe effects of counterface surface roughness on the friction and wear behaviors of polyether ether ketone (PEEK) are studied using blocks on a ring wear tester under oil-lubricated conditions. The blocks are made of unfilled PEEK and a PEEK composite that is 30 wt% carbon fiber. The ring is made of forged steel (SF540A) and its surface roughness varies between 0.04 to 1.86 μm Ra; the sliding velocity and load are 10.2 m/s and 588 N, respectively. Results indicate that both the friction coefficient and each block’s specific wear rate increase from low to high values when the ring’s surface roughness exceeds a certain value (0.2–0.4 μm Ra). In high friction and wear regions, significant differences exist in the friction and wear behaviors of both PEEK and the PEEK composite. The PEEK composite shows a significantly lower friction coefficient and wear rate as compared to PEEK. However, the PEEK composite causes greater wear of the ring, though the extent to which the ring wears is dependent on the ring’s surface roughness. Wear particles and wear scars on both materials are observed and analyzed using a scanning electron microscope and an energy-dispersive X-ray spectroscope. The wear mechanisms are then discussed.https://www.jstage.jst.go.jp/article/trol/11/3/11_494/_pdf/-char/enpeek compositepeekfriction and wearsurface roughness of counterfaceoil lubricationwear particlewear mechanism
spellingShingle Tomoharu Akagaki
Masahiko Kawabata
Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
Tribology Online
peek composite
peek
friction and wear
surface roughness of counterface
oil lubrication
wear particle
wear mechanism
title Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
title_full Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
title_fullStr Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
title_full_unstemmed Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
title_short Effects of Counterface Surface Roughness on Friction and Wear of PEEK Materials under Oil-Lubricated Conditions
title_sort effects of counterface surface roughness on friction and wear of peek materials under oil lubricated conditions
topic peek composite
peek
friction and wear
surface roughness of counterface
oil lubrication
wear particle
wear mechanism
url https://www.jstage.jst.go.jp/article/trol/11/3/11_494/_pdf/-char/en
work_keys_str_mv AT tomoharuakagaki effectsofcounterfacesurfaceroughnessonfrictionandwearofpeekmaterialsunderoillubricatedconditions
AT masahikokawabata effectsofcounterfacesurfaceroughnessonfrictionandwearofpeekmaterialsunderoillubricatedconditions