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Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel

Donald Hill, Peter Holliman Orcid Logo, James McGettrick, Marco Appelman, Pranesh Chatterjee, Trystan Watson Orcid Logo, David Worsley Orcid Logo

Tribology International

Swansea University Authors: Peter Holliman Orcid Logo, Trystan Watson Orcid Logo, David Worsley Orcid Logo

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DOI (Published version): 10.1016/j.triboint.2017.11.015

Abstract

The tribological properties of octyl-, dodecyl- or octadecylphosphonic acid coatings on TiO2-coated galvanized steel substrates have been studied using linear friction testing (LFT) as potential lubricants for deep drawing automotive steels. LFT data show that the coatings reduce the coefficient of...

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Published in: Tribology International
ISSN: 0301-679X
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa36778
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spelling 2020-06-03T13:57:47.7628015 v2 36778 2017-11-16 Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel c8f52394d776279c9c690dc26066ddf9 0000-0002-9911-8513 Peter Holliman Peter Holliman true false a210327b52472cfe8df9b8108d661457 0000-0002-8015-1436 Trystan Watson Trystan Watson true false c426b1c1b0123d7057c1b969083cea69 0000-0002-9956-6228 David Worsley David Worsley true false 2017-11-16 MTLS The tribological properties of octyl-, dodecyl- or octadecylphosphonic acid coatings on TiO2-coated galvanized steel substrates have been studied using linear friction testing (LFT) as potential lubricants for deep drawing automotive steels. LFT data show that the coatings reduce the coefficient of friction by > 65% from 0.31 to <0.11. Confocal microscopy reveals that phosphonate-coated surfaces suffer considerably less wear than uncoated substrates during LFT. Water contact angle (WCA), XPS and IR data show that physisorbed phosphonates are removed by acetone washing leaving chemisorbed material. Data from a month-long ageing study using WCA, XPS and IR data shows that most of the physisorbed phosphonates become chemisorbed with time increasing hydrophobicity and tribological properties of the surfaces. Most of the changes occur within 14 days of coating and, after 21 days, no further surface changes were observed. Journal Article Tribology International 0301-679X Automotive steel; Forming; Low friction; Phosphonic acids 31 12 2017 2017-12-31 10.1016/j.triboint.2017.11.015 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2020-06-03T13:57:47.7628015 2017-11-16T08:52:02.8148200 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering Donald Hill 1 Peter Holliman 0000-0002-9911-8513 2 James McGettrick 3 Marco Appelman 4 Pranesh Chatterjee 5 Trystan Watson 0000-0002-8015-1436 6 David Worsley 0000-0002-9956-6228 7 0036778-16112017085953.pdf hill2017.pdf 2017-11-16T08:59:53.7830000 Output 3049809 application/pdf Accepted Manuscript true 2018-11-14T00:00:00.0000000 true eng
title Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
spellingShingle Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
Peter Holliman
Trystan Watson
David Worsley
title_short Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
title_full Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
title_fullStr Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
title_full_unstemmed Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
title_sort Study of the tribological properties and ageing of alkyphosphonic acid films on galvanized steel
author_id_str_mv c8f52394d776279c9c690dc26066ddf9
a210327b52472cfe8df9b8108d661457
c426b1c1b0123d7057c1b969083cea69
author_id_fullname_str_mv c8f52394d776279c9c690dc26066ddf9_***_Peter Holliman
a210327b52472cfe8df9b8108d661457_***_Trystan Watson
c426b1c1b0123d7057c1b969083cea69_***_David Worsley
author Peter Holliman
Trystan Watson
David Worsley
author2 Donald Hill
Peter Holliman
James McGettrick
Marco Appelman
Pranesh Chatterjee
Trystan Watson
David Worsley
format Journal article
container_title Tribology International
publishDate 2017
institution Swansea University
issn 0301-679X
doi_str_mv 10.1016/j.triboint.2017.11.015
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
active_str 0
description The tribological properties of octyl-, dodecyl- or octadecylphosphonic acid coatings on TiO2-coated galvanized steel substrates have been studied using linear friction testing (LFT) as potential lubricants for deep drawing automotive steels. LFT data show that the coatings reduce the coefficient of friction by > 65% from 0.31 to <0.11. Confocal microscopy reveals that phosphonate-coated surfaces suffer considerably less wear than uncoated substrates during LFT. Water contact angle (WCA), XPS and IR data show that physisorbed phosphonates are removed by acetone washing leaving chemisorbed material. Data from a month-long ageing study using WCA, XPS and IR data shows that most of the physisorbed phosphonates become chemisorbed with time increasing hydrophobicity and tribological properties of the surfaces. Most of the changes occur within 14 days of coating and, after 21 days, no further surface changes were observed.
published_date 2017-12-31T03:46:07Z
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score 11.037581

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