Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.21577/0103-5053.20200104 http://hdl.handle.net/11449/206693 |
Resumo: | A new methodology using gas-diffusion microextraction (GDME) was developed for the analysis of volatile corrosion inhibitors (VCIs). The evaluation of the inhibition efficiency and corrosion rate (ν) was performed by NaCl deliquescence tests and correlated with measurements of polarization resistance (Rp) obtained from electrochemical impedance spectroscopy (EIS) analysis and with the pH resulting from the atmosphere of the inhibitor (pHGDME). The correlation obtained between ν and pHGDME indicates that the higher the value of pHGDME the lower the corrosion rate. The Raman spectra of steel was used to monitor in situ adsorption of VCI and the surface modifications caused by the inhibitors. The scanning electron microscopy (SEM) images corroborate the data of ν, both indicating that the cyclohexylamine vapor showed the best corrosion resistance performance. |
id |
UNSP_697c7388456ae603130fff46bb08d8d3 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/206693 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence testsCorrosionDerivatizationSteelVapor phase inhibitorsVolatile corrosion inhibitorsA new methodology using gas-diffusion microextraction (GDME) was developed for the analysis of volatile corrosion inhibitors (VCIs). The evaluation of the inhibition efficiency and corrosion rate (ν) was performed by NaCl deliquescence tests and correlated with measurements of polarization resistance (Rp) obtained from electrochemical impedance spectroscopy (EIS) analysis and with the pH resulting from the atmosphere of the inhibitor (pHGDME). The correlation obtained between ν and pHGDME indicates that the higher the value of pHGDME the lower the corrosion rate. The Raman spectra of steel was used to monitor in situ adsorption of VCI and the surface modifications caused by the inhibitors. The scanning electron microscopy (SEM) images corroborate the data of ν, both indicating that the cyclohexylamine vapor showed the best corrosion resistance performance.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista (Unesp)Departamento de Química Fundamental Instituto de Química Universidade de São Paulo (USP)REQUIMTE/LAQV Departamento de Química e Bioquímica Faculdade de Ciências da Universidade do PortoDepartamento de Química Analítica Instituto de Química Universidade Estadual Paulista (Unesp)Departamento de Físico-Química Instituto de Química Universidade Estadual Paulista (Unesp)Departamento de Química Analítica Instituto de Química Universidade Estadual Paulista (Unesp)FAPESP: 2018/14425-7Universidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Faculdade de Ciências da Universidade do PortoValente, Marco A.G. [UNESP]Gonçalves, Luís M.Filho, Juliano Passaretti [UNESP]Cardoso, Arnaldo A. [UNESP]Rodrigues, José A.Fugivara, Cecilio S. [UNESP]Benedetti, Assis V. [UNESP]2021-06-25T10:36:35Z2021-06-25T10:36:35Z2020-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2038-2048application/pdfhttp://dx.doi.org/10.21577/0103-5053.20200104Journal of the Brazilian Chemical Society, v. 31, n. 10, p. 2038-2048, 2020.1678-47900103-5053http://hdl.handle.net/11449/20669310.21577/0103-5053.20200104S0103-505320200010020382-s2.0-85092748639S0103-50532020001002038.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Societyinfo:eu-repo/semantics/openAccess2023-10-10T06:02:59Zoai:repositorio.unesp.br:11449/206693Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:30:04.534146Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
title |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
spellingShingle |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests Valente, Marco A.G. [UNESP] Corrosion Derivatization Steel Vapor phase inhibitors Volatile corrosion inhibitors |
title_short |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
title_full |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
title_fullStr |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
title_full_unstemmed |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
title_sort |
Corrosion protection of steel by volatile corrosion inhibitors: Vapor analysis by gas-diffusion microextraction and mass loss and electrochemical impedance in nacl deliquescence tests |
author |
Valente, Marco A.G. [UNESP] |
author_facet |
Valente, Marco A.G. [UNESP] Gonçalves, Luís M. Filho, Juliano Passaretti [UNESP] Cardoso, Arnaldo A. [UNESP] Rodrigues, José A. Fugivara, Cecilio S. [UNESP] Benedetti, Assis V. [UNESP] |
author_role |
author |
author2 |
Gonçalves, Luís M. Filho, Juliano Passaretti [UNESP] Cardoso, Arnaldo A. [UNESP] Rodrigues, José A. Fugivara, Cecilio S. [UNESP] Benedetti, Assis V. [UNESP] |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade de São Paulo (USP) Faculdade de Ciências da Universidade do Porto |
dc.contributor.author.fl_str_mv |
Valente, Marco A.G. [UNESP] Gonçalves, Luís M. Filho, Juliano Passaretti [UNESP] Cardoso, Arnaldo A. [UNESP] Rodrigues, José A. Fugivara, Cecilio S. [UNESP] Benedetti, Assis V. [UNESP] |
dc.subject.por.fl_str_mv |
Corrosion Derivatization Steel Vapor phase inhibitors Volatile corrosion inhibitors |
topic |
Corrosion Derivatization Steel Vapor phase inhibitors Volatile corrosion inhibitors |
description |
A new methodology using gas-diffusion microextraction (GDME) was developed for the analysis of volatile corrosion inhibitors (VCIs). The evaluation of the inhibition efficiency and corrosion rate (ν) was performed by NaCl deliquescence tests and correlated with measurements of polarization resistance (Rp) obtained from electrochemical impedance spectroscopy (EIS) analysis and with the pH resulting from the atmosphere of the inhibitor (pHGDME). The correlation obtained between ν and pHGDME indicates that the higher the value of pHGDME the lower the corrosion rate. The Raman spectra of steel was used to monitor in situ adsorption of VCI and the surface modifications caused by the inhibitors. The scanning electron microscopy (SEM) images corroborate the data of ν, both indicating that the cyclohexylamine vapor showed the best corrosion resistance performance. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-10-01 2021-06-25T10:36:35Z 2021-06-25T10:36:35Z |
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/10.21577/0103-5053.20200104 Journal of the Brazilian Chemical Society, v. 31, n. 10, p. 2038-2048, 2020. 1678-4790 0103-5053 http://hdl.handle.net/11449/206693 10.21577/0103-5053.20200104 S0103-50532020001002038 2-s2.0-85092748639 S0103-50532020001002038.pdf |
url |
http://dx.doi.org/10.21577/0103-5053.20200104 http://hdl.handle.net/11449/206693 |
identifier_str_mv |
Journal of the Brazilian Chemical Society, v. 31, n. 10, p. 2038-2048, 2020. 1678-4790 0103-5053 10.21577/0103-5053.20200104 S0103-50532020001002038 2-s2.0-85092748639 S0103-50532020001002038.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Brazilian Chemical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2038-2048 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_ |
1808128219242561536 |