PTFE layer formation during brush electroplating of nickel

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dc.contributor.authorIsern, Luis
dc.contributor.authorImpey, Sue
dc.contributor.authorAlmond, Heather
dc.contributor.authorClouser, SJ
dc.contributor.authorEndrino, JL
dc.date.accessioned2024-10-23T13:10:29Z
dc.date.available2024-10-23T13:10:29Z
dc.date.freetoread2024-10-23
dc.date.issued2024-10-14
dc.date.pubOnline2024-10-14
dc.description.abstractBrush electrodeposition of Ni/PTFE composite coatings was explored using a nickel high speed solution and polytetrafluoroethylene (PTFE) particles 6–9 μm in diameter. A novel bilayer-like, partially intercalated structure was produced, consisting of a rough nickel sublayer covered by an outer, compact, smooth PTFE layer. The study of the coating growth revealed that the PTFE particles bind together on the nickel coating valleys and grow until all the surface is covered by a polymer layer without the need of a baking stage. The resulting coating presents a hydrophobic surface with a low coefficient of friction (0.10) and higher corrosion resistance to salt spray testing than the nodular nickel coating. The coatings were produced using an aqueous nickel plating solution, where the hydrophobic PTFE particles were suspended using different substances: cetrimonium bromide (CTAB) cationic surfactant, isopropyl alcohol premixed with the particles, and ethanol premixed with the particles. High concentrations of the suspending products were detrimental for the deposition process, but optimal values of 0.1 g/l, 3 ml/l and 3 ml/l respectively were found. All compounds successfully suspended the PTFE particles and both alcohols produced the Ni/PTFE coating described before, but the CTAB failed to co-deposit the polymer.
dc.description.journalNameScientific Reports
dc.description.sponsorshipThis research has been funded jointly by Cranfield University and SIFCO Applied Surface Concepts under an Industrial Doctorate Scheme. The authors would like to acknowledge the work of Danijela Milosevic from SIFCO ASC on the salt spray testing. J.E. thanks the Spain Ministry of Science and Innovation for financially supporting the projects TED2021 132752B-I00, and PID2021-1287270B-I00.
dc.identifier.citationIsern L, Impey S, Almond H, et al., (2024) PTFE layer formation during brush electroplating of nickel. Scientific Reports, Volume 14, Issue 1, October 2024, Article number 24069
dc.identifier.eissn2045-2322
dc.identifier.elementsID555307
dc.identifier.issueNo1
dc.identifier.paperNo24069
dc.identifier.urihttps://doi.org/10.1038/s41598-024-71376-5
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/23110
dc.identifier.volumeNo14
dc.languageEnglish
dc.language.isoen
dc.publisherSpringer
dc.publisher.urihttps://www.nature.com/articles/s41598-024-71376-5#article-info
dc.relation.referenceshttps://dspace.lib.cranfield.ac.uk/handle/1826/23134
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.titlePTFE layer formation during brush electroplating of nickel
dc.typeArticle
dcterms.dateAccepted2024-08-27

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