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dc.date.accessioned 2024-10-07T17:50:40Z
dc.date.available 2024-10-07T17:50:40Z
dc.date.issued 2003
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/171187
dc.description.abstract The objectives of this work were to study the efficiency and the mechanism of the anticorrosive action of calcium-exchanged silica in paints. The anticorrosive properties of the pigment were evaluated by following the electrochemical behaviour of a steel electrode in the pigment suspension and analysing the protective layer formed on it. In a second stage, solvent-borne paints were formulated with 30% by volume (v/v) of the total pigment content. The selected PVC/CPVC (pigment volume concentration/critical pigment volume concentration) ratio was 0.8. Two resins were chosen as film-forming materials: an alkyd and an epoxy. The performance of the resulting anticorrosive paints was assessed by accelerated (salt-spray and humidity chambers) and electrochemical tests (corrosion potential, ionic and polarisation resistance). It was demonstrated that the anticorrosive performance of paints pigmented with calcium/silica is at least equal or better than that obtained with paints containing zinc phosphate. Good correlation was obtained between accelerated and electrochemical tests. Steel passivation by calcium-exchanged silica is a complex process accomplished by the high pH of the pigment suspension and the deposition of a siliceous film on the steel surface. en
dc.format.extent 91-168 es
dc.language en es
dc.subject anticorrosive action es
dc.subject calcium exchange silica es
dc.title The mechanism of the anticorrosive action of calcium-exchanged silica en
dc.title.alternative Le mécanisme de l’action anticorrosive de la silice qui a été l’objet d’une échange par le calcium fr
dc.title.alternative Der Mechanismus der antikorrosiven Wirkung von Kalzium-ersetzten Silikaten de
dc.type Articulo es
sedici.identifier.other http://dx.doi.org/10.1007/BF02699625 es
sedici.identifier.issn 1476-4865 es
sedici.creator.person Romagnoli, Roberto es
sedici.creator.person Deyá, Marta Cecilia es
sedici.creator.person Del Amo, Delia Beatriz es
sedici.subject.materias Ingeniería Química es
sedici.description.fulltext true es
mods.originInfo.place Centro de Investigación y Desarrollo en Tecnología de Pinturas es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by-nc-sa/4.0/
sedici.description.peerReview peer-review es
sedici.relation.journalTitle Surface Coatings International Part B: Coatings Transactions es
sedici.relation.journalVolumeAndIssue vol. 86, no. 2 es


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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) Excepto donde se diga explícitamente, este item se publica bajo la siguiente licencia Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)