Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/1822/48405 |
Resumo: | Hybrid sol-gel coatings, named U(X):TEOS, based on ureasilicate matrices (U(X)) enriched with tetraethoxysilane (TEOS), were synthesized. The influence of TEOS addition was studied on both the structure of the hybrid sol-gel films as well as on the electrochemical properties. The effect of TEOS on the structure of the hybrid sol-gel films was investigated by solid state Nuclear Magnetic Resonance. The dielectric properties of the different materials were investigated by electrochemical impedance spectroscopy. The corrosion behavior of the hybrid coatings on HDGS was studied in chloride-contaminated simulated concrete pore solutions (SCPS) by polarization resistance measurements. The roughness of the HDGS coated with hybrids was also characterized by atomic force microscopy. The structural characterization of the hybrid materials proved the effective reaction between Jeffamine® and 3-isocyanate propyltriethoxysilane (ICPTES) and indicated that the addition of TEOS does not seem to affect the organic structure or to increase the degree of condensation of the hybrid materials. Despite the apparent lack of influence on the hybrids architecture, the polarization resistance measurements confirmed that TEOS addition improves the corrosion resistance of the hybrid coatings (U(X):TEOS) in chloride-contaminated SCPS when compared to samples prepared without any TEOS (U(X)). This behavior could be related to the decrease in roughness of the hybrid coatings (due TEOS addition) and to the different metal coating interaction resulting from the increase of the inorganic component in the hybrid matrix. |
id |
RCAP_40aaff0ade898bf31d18f961817e11ce |
---|---|
oai_identifier_str |
oai:repositorium.sdum.uminho.pt:1822/48405 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
|
spelling |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutionsSol-gelHybridsCoatingsCorrosion mitigationAlkaline environmentChloridesEngenharia e Tecnologia::Engenharia CivilScience & TechnologyHybrid sol-gel coatings, named U(X):TEOS, based on ureasilicate matrices (U(X)) enriched with tetraethoxysilane (TEOS), were synthesized. The influence of TEOS addition was studied on both the structure of the hybrid sol-gel films as well as on the electrochemical properties. The effect of TEOS on the structure of the hybrid sol-gel films was investigated by solid state Nuclear Magnetic Resonance. The dielectric properties of the different materials were investigated by electrochemical impedance spectroscopy. The corrosion behavior of the hybrid coatings on HDGS was studied in chloride-contaminated simulated concrete pore solutions (SCPS) by polarization resistance measurements. The roughness of the HDGS coated with hybrids was also characterized by atomic force microscopy. The structural characterization of the hybrid materials proved the effective reaction between Jeffamine® and 3-isocyanate propyltriethoxysilane (ICPTES) and indicated that the addition of TEOS does not seem to affect the organic structure or to increase the degree of condensation of the hybrid materials. Despite the apparent lack of influence on the hybrids architecture, the polarization resistance measurements confirmed that TEOS addition improves the corrosion resistance of the hybrid coatings (U(X):TEOS) in chloride-contaminated SCPS when compared to samples prepared without any TEOS (U(X)). This behavior could be related to the decrease in roughness of the hybrid coatings (due TEOS addition) and to the different metal coating interaction resulting from the increase of the inorganic component in the hybrid matrix.COST Action MP1202 (HINT) “Rational design of hybrid organic/inorganic interfaces: the next step towards advanced functional materials”The authors would like to gratefully acknowledge the financial support from Fundação para a Ciência e Tecnologia (FCT) for the PhD grant SFRH/BD/62601/2009 and to Hugo Gomes for assisting in the execution of Figures 2 and 3. The research was performed within the frame of COST Action MP1202 (HINT) “Rational design of hybrid organic/inorganic interfaces: the next step towards advanced functional materials”. The COST action MP1202 (HINT) is acknowledged for providing funding for COST-STSM-MP1202-32076 grant that contributed to this research project.info:eu-repo/semantics/publishedVersionMultidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoFigueira, Rita Maria Burguete Bacelar MarreirosCallone, EmanuelaSilva, Carlos J. R.Pereira, Elsa V.Dirè, Sandra2017-03-172017-03-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/48405engFigueira, R.B.; Callone, E.; Silva, C.J.R.; Pereira, E.V.; Dirè, S. Hybrid Coatings Enriched with Tetraethoxysilane for Corrosion Mitigation of Hot-Dip Galvanized Steel in Chloride Contaminated Simulated Concrete Pore Solutions. Materials 2017, 10, 306.1996-194410.3390/ma10030306http://www.mdpi.com/1996-1944/10/3/306info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:09:08ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
title |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
spellingShingle |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions Figueira, Rita Maria Burguete Bacelar Marreiros Sol-gel Hybrids Coatings Corrosion mitigation Alkaline environment Chlorides Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
title_full |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
title_fullStr |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
title_full_unstemmed |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
title_sort |
Hybrid coatings enriched with tetraethoxysilane for corrosion mitigation of hot-dip galvanized steel in chloride contaminated simulated concrete pore solutions |
author |
Figueira, Rita Maria Burguete Bacelar Marreiros |
author_facet |
Figueira, Rita Maria Burguete Bacelar Marreiros Callone, Emanuela Silva, Carlos J. R. Pereira, Elsa V. Dirè, Sandra |
author_role |
author |
author2 |
Callone, Emanuela Silva, Carlos J. R. Pereira, Elsa V. Dirè, Sandra |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Figueira, Rita Maria Burguete Bacelar Marreiros Callone, Emanuela Silva, Carlos J. R. Pereira, Elsa V. Dirè, Sandra |
dc.subject.por.fl_str_mv |
Sol-gel Hybrids Coatings Corrosion mitigation Alkaline environment Chlorides Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Sol-gel Hybrids Coatings Corrosion mitigation Alkaline environment Chlorides Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
Hybrid sol-gel coatings, named U(X):TEOS, based on ureasilicate matrices (U(X)) enriched with tetraethoxysilane (TEOS), were synthesized. The influence of TEOS addition was studied on both the structure of the hybrid sol-gel films as well as on the electrochemical properties. The effect of TEOS on the structure of the hybrid sol-gel films was investigated by solid state Nuclear Magnetic Resonance. The dielectric properties of the different materials were investigated by electrochemical impedance spectroscopy. The corrosion behavior of the hybrid coatings on HDGS was studied in chloride-contaminated simulated concrete pore solutions (SCPS) by polarization resistance measurements. The roughness of the HDGS coated with hybrids was also characterized by atomic force microscopy. The structural characterization of the hybrid materials proved the effective reaction between Jeffamine® and 3-isocyanate propyltriethoxysilane (ICPTES) and indicated that the addition of TEOS does not seem to affect the organic structure or to increase the degree of condensation of the hybrid materials. Despite the apparent lack of influence on the hybrids architecture, the polarization resistance measurements confirmed that TEOS addition improves the corrosion resistance of the hybrid coatings (U(X):TEOS) in chloride-contaminated SCPS when compared to samples prepared without any TEOS (U(X)). This behavior could be related to the decrease in roughness of the hybrid coatings (due TEOS addition) and to the different metal coating interaction resulting from the increase of the inorganic component in the hybrid matrix. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-03-17 2017-03-17T00:00:00Z |
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://hdl.handle.net/1822/48405 |
url |
http://hdl.handle.net/1822/48405 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Figueira, R.B.; Callone, E.; Silva, C.J.R.; Pereira, E.V.; Dirè, S. Hybrid Coatings Enriched with Tetraethoxysilane for Corrosion Mitigation of Hot-Dip Galvanized Steel in Chloride Contaminated Simulated Concrete Pore Solutions. Materials 2017, 10, 306. 1996-1944 10.3390/ma10030306 http://www.mdpi.com/1996-1944/10/3/306 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (MDPI) |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
|
repository.mail.fl_str_mv |
|
_version_ |
1777303692771328000 |