Influence of organic additives on the behaviour of zinc electroplating from alkaline cyanidefree electrolyte

dc.creatorPary, Paola
dc.creatorBengoa, José Fernando
dc.creatorConconi, María Susana
dc.creatorBruno, S.
dc.creatorZapponi, M.
dc.creatorEgli, Walter Alfredo
dc.date2017
dc.date2022-12-28T14:36:10Z
dc.date.accessioned2023-07-15T09:17:43Z
dc.date.available2023-07-15T09:17:43Z
dc.identifierhttp://sedici.unlp.edu.ar/handle/10915/147812
dc.identifierissn:0020-2967
dc.identifierissn:1745-9192
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7487495
dc.descriptionTwo similar polymeric organic compounds from the polyquaternium family were studied as levelling additives in an alkaline cyanide-free zinc plating electrolyte. One additive (LA) has amide bonds between its monomers and the other (LU) has urea unions in its chemical structure. Copper cementation on zinc and gas evolution during aging of the zinc coatings were used to evaluate the effect of the chemical structure of the organic additives on the characteristic deleterious aging process of the coatings when electrodeposited with LA. Scanning electron microscopy and X-ray diffraction were used to follow surface morphology and crystallographic modifications of the coatings during aging. Faster copper cementation kinetics, zinc whiskers growth, blistering of the coating and N₂, CH₄, CO₂ and H₂ evolution were observed during accelerated aging of the coatings when LA was used. The coatings produced with LU did not show any aging effect. These studies show the strong influence that subtle changes in the chemical structure of the organic additive may have on the performance of zinc coating during storage.
dc.descriptionCentro de Investigación y Desarrollo en Tecnología de Pinturas
dc.descriptionCentro de Investigación y Desarrollo en Ciencias Aplicadas
dc.descriptionCentro de Tecnología de Recursos Minerales y Cerámica
dc.formatapplication/pdf
dc.format83-89
dc.languageen
dc.rightshttp://creativecommons.org/licenses/by/4.0/
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0)
dc.subjectIngeniería
dc.subjectQuímica
dc.subjectElectroplating
dc.subjectZinc
dc.subjectCyanide-free electrolyte
dc.subjectAlkaline
dc.subjectOrganic additives
dc.titleInfluence of organic additives on the behaviour of zinc electroplating from alkaline cyanidefree electrolyte
dc.typeArticulo
dc.typeArticulo


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