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dc.contributor.author
Valcarce, María Beatriz
dc.contributor.author
Vazquez, Marcela Vivian
dc.date.available
2018-01-30T16:54:08Z
dc.date.issued
2009-03
dc.identifier.citation
Valcarce, María Beatriz; Vazquez, Marcela Vivian; Carbon steel passivity examined in solutions with a low degree of carbonation: The effect of chloride and nitrite ions; Elsevier Science Sa; Materials Chemistry and Physics; 115; 1; 3-2009; 313-321
dc.identifier.issn
0254-0584
dc.identifier.uri
http://hdl.handle.net/11336/35010
dc.description.abstract
The effect of nitrite ions as inhibitors against steel corrosion in carbonated and chloride-contaminated concrete pore simulating solutions (pH 9) is investigated. Various inhibitor dosages and two chloride contents are tested. The inhibition efficiency is evaluated measuring the corrosion potential, cyclic voltammograms, anodic polarization curves, pitting and repassivation potentials, polarization resistance and performing electrochemical impedance spectra, together with weight-loss measurements. Independently of the chloride content, when [NO2−] = 0.2 mol l−1, the inhibition efficiency reaches 99% and if pitting occurs, surface repassivation is possible. At high chloride contents, if inadequate dosages of inhibitor are used, the risk of pitting attack is high because Epit is close to the OCP. The [NO2−]/[Cl−] ratio is not an appropriated parameter to evaluate the inhibitor efficiency for varying chloride concentrations in a carbonated concrete. An optimal nitrite ions concentration ([NO2−] = 0.2 mol l−1) can be established as the most suitable parameter to guarantee the inhibitor efficiency in the different electrolytes studied.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Sa
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Surfaces
dc.subject
Oxides
dc.subject
Electrochemical Techniques
dc.subject
Corrosion
dc.subject.classification
Otras Ciencias Químicas
dc.subject.classification
Ciencias Químicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Carbon steel passivity examined in solutions with a low degree of carbonation: The effect of chloride and nitrite ions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-25T19:53:35Z
dc.journal.volume
115
dc.journal.number
1
dc.journal.pagination
313-321
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Valcarce, María Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.description.fil
Fil: Vazquez, Marcela Vivian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
dc.journal.title
Materials Chemistry and Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.matchemphys.2008.12.007
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0254058408009863
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