| Titre : |
Electrochemical impedance study for modeling the anticorrosive performance of coatings based on accelerated tests and outdoor exposures |
| Type de document : |
texte imprimé |
| Auteurs : |
Franky E. Bedoya, Auteur ; Ángela Bermudez, Auteur ; Juan G. Castano, Auteur ; Félix Echeverría, Auteur ; Jorge A. Calderón, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 895-904 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Corrosion
Essais accélérés (technologie)
Prévision, Théorie de la
Revêtements organiques
Spectroscopie d'impédance électrochimique
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this study, the atmospheric corrosive protection characteristics of four organic coatings were modeled based on the evolution of low-frequency impedance (|Z|ω→0) over time when subjected to accelerated tests and outdoor exposures. Environmental characteristics such as the time of wetness, chloride and sulfate depositions, and ultraviolet radiation were defined as explanatory variables. The results obtained helped to establish a relationship between |Z|ω→0, acquired from electrochemical impedance spectra, and the explanatory variables. An adjustment factor was calculated for each coating against the most aggressive natural exposure, resulting in a good prediction of |Z|ω→0 and the performance of the coatings for other outdoor tests. |
| Note de contenu : |
- MATERIALS AND METHODS : Accelerated tests - Natural outdoor tests - Accelerated outdoor tests - Atmospheric characterization for outdoor tests - Electrochemical cell parameters for EIS measurements
- THEORETICAL TREATMENT
- RESULTS AND DISCUSSION : Accelerated test predictors - Outdoor test predictors - Estimation of coefficients from the accelerated tests measurements - Prediction of impedance modules for outdoor exposures - Estimation of failure times |
| DOI : |
10.1007/s11998-016-9803-7 |
| En ligne : |
http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9803-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27128 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 5 (09/2016) . - p. 895-904
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Electrochemical impedance study for modeling the anticorrosive performance of coatings based on accelerated tests and outdoor exposures in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
