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dc.contributorArmelín Diggroc, Elaine Aparecida
dc.contributor.authorVelasques Ugarteche, Caroline
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Química
dc.description.abstractIn order to prevent corrosion on aluminium and aluminium alloys, many surface treatments have been developed, such as silane films, which are environmentally compliant coatings. During this work we investigate corrosive behaviour of aluminum alloys AA2024 in a NaCl 0.05mol L-1 coated with MEMO/Bis-EGMP/TiB, during the Part A and TEOS/ATMP/GPTMS during the Part B. The aluminium alloy substrates were pre-threated before the coating deposition. The silane coatings were applied using sol-gel system. After silane curing process, all the substrates were covered with a commercial epoxy coating in order to provide the topcoat protection before the samples immersion in the aggressive solution for corrosion tests (NaCl 3.5%). Electrochemical techniques were applied during Part A in order to evaluate the corrosion protection of silane coating. Microscope and optical analysis was carried on during this work to evaluate the film surface homogeneity and the presence or absence of defects. The samples prepared were tested under accelerated corrosion environment, which showed that the samples prepared on Part A of the present study did not have good protection performance. On the other hand, samples prepared during Part B showed excellent behaviour and the silane coating prepared from TEOS/ATMP/GPTMS system protected the aluminium surface from the aggressive corrosion medium. Adherence of silane system and also the topcoat applied is essential to obtain a long time protection. Therefore, pull-off tests were performed to confirm the efficacy of the coating adherence.
dc.publisherUniversitat Politècnica de Catalunya
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Metal·lúrgia
dc.subjectÀrees temàtiques de la UPC::Enginyeria química::Indústries químiques
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials::Assaig de materials::Assaigs de corrosió
dc.subject.lcshAluminum alloys -- Corrosion
dc.subject.lcshProtective coatings
dc.subject.lcshOrganic compounds
dc.subject.lcshInorganic compounds
dc.titleInvestigation on Corrosion Protection applying organic–inorganic sol–gel coatings on AA2024-T3
dc.typeBachelor thesis
dc.subject.lemacAlumini -- Aliatges -- Corrosió
dc.subject.lemacRevestiments protectors
dc.subject.lemacCompostos orgànics
dc.subject.lemacCompostos inorgànics
dc.rights.accessOpen Access
dc.audience.mediatorEscola Tècnica Superior d'Enginyeria Industrial de Barcelona
dc.audience.degreeMOBILITAT INCOMING

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Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain