Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.corsci.2016.05.034 http://hdl.handle.net/11449/173150 |
Resumo: | Coatings composed of polyurethanes derived from polyesters of crambe oil and pre-polymer obtained from hexamethylene diisocyanate and castor oil were prepared (1:2 and 1:3, respectively) and applied on the Al alloy 1200. The corrosion resistance of the coated panels was studied by linear polarization and conventional electrochemical impedance (EIS). The fraction of an active area of the substrate was around 0.017% and 0.013% for the 1:2 and 1:3 coatings, respectively. The performance of pristine samples was also studied by electrochemical impedance spectroscopy. An artificial scratch was performed on pristine samples and the local corrosion activity was studied by localized impedance spectroscopy (LEIS) and scanning vibrating electrode technique (SVET) in NaCl solutions. Filiform corrosion was observed for the panel coated with the modified polyester and pre-polymer 1:3 after 12 h of test. The scratched sample of modified polyester and pre-polymer 1:2 showed better performance in NaCl solution and the coating seems to present a self-healing response to the artificial damage. |
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Repositório Institucional da UNESP |
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Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloyAluminium alloyEIS, SEM, Polymer coatingsOrganic coatingsScratching electrodeCoatings composed of polyurethanes derived from polyesters of crambe oil and pre-polymer obtained from hexamethylene diisocyanate and castor oil were prepared (1:2 and 1:3, respectively) and applied on the Al alloy 1200. The corrosion resistance of the coated panels was studied by linear polarization and conventional electrochemical impedance (EIS). The fraction of an active area of the substrate was around 0.017% and 0.013% for the 1:2 and 1:3 coatings, respectively. The performance of pristine samples was also studied by electrochemical impedance spectroscopy. An artificial scratch was performed on pristine samples and the local corrosion activity was studied by localized impedance spectroscopy (LEIS) and scanning vibrating electrode technique (SVET) in NaCl solutions. Filiform corrosion was observed for the panel coated with the modified polyester and pre-polymer 1:3 after 12 h of test. The scratched sample of modified polyester and pre-polymer 1:2 showed better performance in NaCl solution and the coating seems to present a self-healing response to the artificial damage.Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista UNESPCQE – DEQ Instituto superior Técnico Universidade de Lisboa, Av. Rovisco PaisDepartamento de Físico-Química Instituto de Química Universidade Estadual Paulista UNESPUniversidade Estadual Paulista (Unesp)Universidade de LisboaNardeli, J. V. [UNESP]Snihirova, D. V.Fugivara, C. S. [UNESP]Montemor, M. F.Pinto, E. R.P. [UNESP]Messaddecq, Y. [UNESP]Benedetti, A. V. [UNESP]2018-12-11T17:03:51Z2018-12-11T17:03:51Z2016-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article422-435application/pdfhttp://dx.doi.org/10.1016/j.corsci.2016.05.034Corrosion Science, v. 111, p. 422-435.0010-938Xhttp://hdl.handle.net/11449/17315010.1016/j.corsci.2016.05.0342-s2.0-849765424042-s2.0-84976542404.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCorrosion Scienceinfo:eu-repo/semantics/openAccess2023-10-02T06:02:01Zoai:repositorio.unesp.br:11449/173150Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-05-23T11:12:46.310990Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
title |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
spellingShingle |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy Nardeli, J. V. [UNESP] Aluminium alloy EIS, SEM, Polymer coatings Organic coatings Scratching electrode |
title_short |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
title_full |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
title_fullStr |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
title_full_unstemmed |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
title_sort |
Localised corrosion assessement of crambe-oil-based polyurethane coatings applied on the ASTM 1200 aluminum alloy |
author |
Nardeli, J. V. [UNESP] |
author_facet |
Nardeli, J. V. [UNESP] Snihirova, D. V. Fugivara, C. S. [UNESP] Montemor, M. F. Pinto, E. R.P. [UNESP] Messaddecq, Y. [UNESP] Benedetti, A. V. [UNESP] |
author_role |
author |
author2 |
Snihirova, D. V. Fugivara, C. S. [UNESP] Montemor, M. F. Pinto, E. R.P. [UNESP] Messaddecq, Y. [UNESP] Benedetti, A. V. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Nardeli, J. V. [UNESP] Snihirova, D. V. Fugivara, C. S. [UNESP] Montemor, M. F. Pinto, E. R.P. [UNESP] Messaddecq, Y. [UNESP] Benedetti, A. V. [UNESP] |
dc.subject.por.fl_str_mv |
Aluminium alloy EIS, SEM, Polymer coatings Organic coatings Scratching electrode |
topic |
Aluminium alloy EIS, SEM, Polymer coatings Organic coatings Scratching electrode |
description |
Coatings composed of polyurethanes derived from polyesters of crambe oil and pre-polymer obtained from hexamethylene diisocyanate and castor oil were prepared (1:2 and 1:3, respectively) and applied on the Al alloy 1200. The corrosion resistance of the coated panels was studied by linear polarization and conventional electrochemical impedance (EIS). The fraction of an active area of the substrate was around 0.017% and 0.013% for the 1:2 and 1:3 coatings, respectively. The performance of pristine samples was also studied by electrochemical impedance spectroscopy. An artificial scratch was performed on pristine samples and the local corrosion activity was studied by localized impedance spectroscopy (LEIS) and scanning vibrating electrode technique (SVET) in NaCl solutions. Filiform corrosion was observed for the panel coated with the modified polyester and pre-polymer 1:3 after 12 h of test. The scratched sample of modified polyester and pre-polymer 1:2 showed better performance in NaCl solution and the coating seems to present a self-healing response to the artificial damage. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-10-01 2018-12-11T17:03:51Z 2018-12-11T17:03:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.corsci.2016.05.034 Corrosion Science, v. 111, p. 422-435. 0010-938X http://hdl.handle.net/11449/173150 10.1016/j.corsci.2016.05.034 2-s2.0-84976542404 2-s2.0-84976542404.pdf |
url |
http://dx.doi.org/10.1016/j.corsci.2016.05.034 http://hdl.handle.net/11449/173150 |
identifier_str_mv |
Corrosion Science, v. 111, p. 422-435. 0010-938X 10.1016/j.corsci.2016.05.034 2-s2.0-84976542404 2-s2.0-84976542404.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Corrosion Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
422-435 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045788741271552 |