Thermally sprayed SiC coatings for offshore wind turbine bearing applications

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dc.contributor.authorMubarok, F.
dc.contributor.authorArmada, S.
dc.contributor.authorFagoaga, I.
dc.contributor.authorEspallargas, N.
dc.contributor.institutionEXTREMAT
dc.date.accessioned2024-07-24T12:01:18Z
dc.date.available2024-07-24T12:01:18Z
dc.date.issued2013-12
dc.description.abstractTribological tests were conducted on thermally sprayed silicon carbide (SiC) coatings to investigate its potential on reducing wear in offshore wind turbine bearings. The tests were carried out under dry conditions, 3.5 wt.% NaCl solution, and polyalfaolefin (PAO)-lubricated conditions. In order to obtain good quality SiC coatings, it is compulsory to modify the feedstock to limit SiC decomposition during atmospheric spraying process. The SiC feedstock used in this research has been modified with yttrium aluminum garnet (Y 3Al5O12) oxide additives that originated from its metal salt precursors. High-frequency pulse detonation (HFPD) technique has been utilized to produce coatings of around 100 μm in thickness. The sliding tests have recorded the lowest coefficient of friction (COF) of 0.15 in PAO condition and the highest COF of 0.50 in dry sliding. The wear tracks morphology show that during dry sliding test, the coatings experience abrasive wear accompanied by tribo-oxidation reaction that initiates crack formation along the splat boundaries. On the other two sliding test conditions (NaCl and PAO), polishing of asperities and some grain plowing from the splats were observed in the wear tracks. Tribochemical wear was found to be the main mechanism producing smooth surfaces. Nevertheless, in all cases, the wear losses were negligible.en
dc.description.sponsorshipThe authors would like to acknowledge the support of TSO Materialer, NTNU (Strategic Area of Materials, NTNU) for funding. Carlos Vaquero and Georgii Barykin (TECNALIA, Spain) are also thanked for helping and advising in the production of the coatings.
dc.description.statusPeer reviewed
dc.format.extent7
dc.identifier.citationMubarok , F , Armada , S , Fagoaga , I & Espallargas , N 2013 , ' Thermally sprayed SiC coatings for offshore wind turbine bearing applications ' , Journal of Thermal Spray Technology , vol. 22 , no. 8 , pp. 1303-1309 . https://doi.org/10.1007/s11666-013-9991-y
dc.identifier.doi10.1007/s11666-013-9991-y
dc.identifier.issn1059-9630
dc.identifier.urihttps://hdl.handle.net/11556/3131
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=84890550209&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofJournal of Thermal Spray Technology
dc.relation.projectIDTSO Materialer
dc.relation.projectIDNorges Teknisk-Naturvitenskapelige Universitet, NTNU
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subject.keywordshigh-frequency pulse detonation
dc.subject.keywordsoffshore bearing
dc.subject.keywordssilicon carbide
dc.subject.keywordstribology
dc.subject.keywordsCondensed Matter Physics
dc.subject.keywordsSurfaces, Coatings and Films
dc.subject.keywordsMaterials Chemistry
dc.subject.keywordsSDG 7 - Affordable and Clean Energy
dc.titleThermally sprayed SiC coatings for offshore wind turbine bearing applicationsen
dc.typejournal article
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