Effect of crevice corrosion inhibitors on the passivity of alloy 22
Electrochemical impedance spectroscopy (EIS) tests were performed on alloy 22 in chloride and chloride plus inhibitor naturally aerated solutions, at 90°C. A Rω-(RF//CPE) equivalent circuit model was used for fitting to the EIS data. Rω and RF were the ohmic and film resistances, respectively, and C...
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ftconicet:oai:ri.conicet.gov.ar:11336/198782 2023-10-09T21:50:41+02:00 Effect of crevice corrosion inhibitors on the passivity of alloy 22 Ortíz, Mauricio Rincón Rodríguez, Martín Alejandro Carranza, Ricardo Mario application/pdf http://hdl.handle.net/11336/198782 eng eng Electrochemical Society info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1149/2.040211jes/meta info:eu-repo/semantics/altIdentifier/doi/10.1149/2.040211jes http://hdl.handle.net/11336/198782 Ortíz, Mauricio Rincón; Rodríguez, Martín Alejandro; Carranza, Ricardo Mario; Effect of crevice corrosion inhibitors on the passivity of alloy 22; Electrochemical Society; Journal of the Electrochemical Society; 159; 11; 11-2012; 469-475 0013-4651 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ PASSIVE FILM BICARBONATE TUNGSTATE MOLYBDATE https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1149/2.040211jes 2023-09-24T19:18:32Z Electrochemical impedance spectroscopy (EIS) tests were performed on alloy 22 in chloride and chloride plus inhibitor naturally aerated solutions, at 90°C. A Rω-(RF//CPE) equivalent circuit model was used for fitting to the EIS data. Rω and RF were the ohmic and film resistances, respectively, and CPE accounted for the non-ideal capacitance. The fitting errors of the circuit parameters decreased as pH increased. The passive film properties improved as pH increased from pH 0 to pH 4. At higher pH values, the passive film properties depended mainly on the identity of the salt added. Oxalic, picric and citric acids additions were detrimental for the passive film developed on alloy 22. Carbonate and bicarbonate led to less protective passive films only when added to 1 M NaCl solutions. Fluoride was a detrimental addition at pH 6, but not at pH 9. Acetic acid, carbonic acid, silicate, tungstate, and molybdate additions did not modify significantly the protective properties of the alloy 22 passive film. Nitrate, sulfate and chromate additions led to thick and protective passive films. The efficiency of the tested species as crevice corrosion inhibitors was not related to their effects on alloy 22 passivity. Fil: Ortíz, Mauricio Rincón. The University Of Akron (uoa); Fil: Rodríguez, Martín Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina Fil: Carranza, Ricardo Mario. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina Article in Journal/Newspaper Carbonic acid CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Argentina San Martín ENVELOPE(-67.133,-67.133,-68.117,-68.117) Ricardo ENVELOPE(-63.033,-63.033,-64.867,-64.867) Journal of The Electrochemical Society 159 11 C469 C475 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
PASSIVE FILM BICARBONATE TUNGSTATE MOLYBDATE https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
spellingShingle |
PASSIVE FILM BICARBONATE TUNGSTATE MOLYBDATE https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 Ortíz, Mauricio Rincón Rodríguez, Martín Alejandro Carranza, Ricardo Mario Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
topic_facet |
PASSIVE FILM BICARBONATE TUNGSTATE MOLYBDATE https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 https://purl.org/becyt/ford/2.5 https://purl.org/becyt/ford/2 |
description |
Electrochemical impedance spectroscopy (EIS) tests were performed on alloy 22 in chloride and chloride plus inhibitor naturally aerated solutions, at 90°C. A Rω-(RF//CPE) equivalent circuit model was used for fitting to the EIS data. Rω and RF were the ohmic and film resistances, respectively, and CPE accounted for the non-ideal capacitance. The fitting errors of the circuit parameters decreased as pH increased. The passive film properties improved as pH increased from pH 0 to pH 4. At higher pH values, the passive film properties depended mainly on the identity of the salt added. Oxalic, picric and citric acids additions were detrimental for the passive film developed on alloy 22. Carbonate and bicarbonate led to less protective passive films only when added to 1 M NaCl solutions. Fluoride was a detrimental addition at pH 6, but not at pH 9. Acetic acid, carbonic acid, silicate, tungstate, and molybdate additions did not modify significantly the protective properties of the alloy 22 passive film. Nitrate, sulfate and chromate additions led to thick and protective passive films. The efficiency of the tested species as crevice corrosion inhibitors was not related to their effects on alloy 22 passivity. Fil: Ortíz, Mauricio Rincón. The University Of Akron (uoa); Fil: Rodríguez, Martín Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina Fil: Carranza, Ricardo Mario. Comisión Nacional de Energía Atómica; Argentina. Universidad Nacional de San Martín. Instituto Sabato; Argentina |
format |
Article in Journal/Newspaper |
author |
Ortíz, Mauricio Rincón Rodríguez, Martín Alejandro Carranza, Ricardo Mario |
author_facet |
Ortíz, Mauricio Rincón Rodríguez, Martín Alejandro Carranza, Ricardo Mario |
author_sort |
Ortíz, Mauricio Rincón |
title |
Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
title_short |
Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
title_full |
Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
title_fullStr |
Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
title_full_unstemmed |
Effect of crevice corrosion inhibitors on the passivity of alloy 22 |
title_sort |
effect of crevice corrosion inhibitors on the passivity of alloy 22 |
publisher |
Electrochemical Society |
url |
http://hdl.handle.net/11336/198782 |
long_lat |
ENVELOPE(-67.133,-67.133,-68.117,-68.117) ENVELOPE(-63.033,-63.033,-64.867,-64.867) |
geographic |
Argentina San Martín Ricardo |
geographic_facet |
Argentina San Martín Ricardo |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1149/2.040211jes/meta info:eu-repo/semantics/altIdentifier/doi/10.1149/2.040211jes http://hdl.handle.net/11336/198782 Ortíz, Mauricio Rincón; Rodríguez, Martín Alejandro; Carranza, Ricardo Mario; Effect of crevice corrosion inhibitors on the passivity of alloy 22; Electrochemical Society; Journal of the Electrochemical Society; 159; 11; 11-2012; 469-475 0013-4651 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1149/2.040211jes |
container_title |
Journal of The Electrochemical Society |
container_volume |
159 |
container_issue |
11 |
container_start_page |
C469 |
op_container_end_page |
C475 |
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1779313757230465024 |