Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions

Detalhes bibliográficos
Autor(a) principal: Kramer,Gustavo Raúl
Data de Publicação: 2018
Outros Autores: Méndez,Claudia Marcela, Ares,Alicia Esther
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600233
Resumo: In the present research, we studied the corrosion resistance of commercial aluminum alloys exposed to ethanol produced in the northeastern region of Argentina and to commercial ethanol as reference medium. Electrochemical tests of potentiodynamic polarization and weight loss were performed by immersion at temperatures below the boiling point of ethanol (25 °C, 40 °C and 50 °C). The results showed that the increase in the corrosion rate of the alloys is directly proportional to the increase in the temperature of the solution, and that the combined action of contaminants in the alcohol (water, organic acids or aggressive ions) contributed to the increase in the aggressiveness of the environment. Specifically, through the results of the gravimetric tests, corrosion products characteristic of the formation of pitting corrosion and alkoxidation were observed. In contrast to the above, the existence of the pitting corrosion mechanism was demonstrated by defining a pitting potential in the potentiodynamic polarization curves.
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spelling Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutionscorrosionaluminum alloysethanolIn the present research, we studied the corrosion resistance of commercial aluminum alloys exposed to ethanol produced in the northeastern region of Argentina and to commercial ethanol as reference medium. Electrochemical tests of potentiodynamic polarization and weight loss were performed by immersion at temperatures below the boiling point of ethanol (25 °C, 40 °C and 50 °C). The results showed that the increase in the corrosion rate of the alloys is directly proportional to the increase in the temperature of the solution, and that the combined action of contaminants in the alcohol (water, organic acids or aggressive ions) contributed to the increase in the aggressiveness of the environment. Specifically, through the results of the gravimetric tests, corrosion products characteristic of the formation of pitting corrosion and alkoxidation were observed. In contrast to the above, the existence of the pitting corrosion mechanism was demonstrated by defining a pitting potential in the potentiodynamic polarization curves.ABM, ABC, ABPol2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600233Materials Research v.21 n.6 2018reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2017-0272info:eu-repo/semantics/openAccessKramer,Gustavo RaúlMéndez,Claudia MarcelaAres,Alicia Esthereng2018-10-19T00:00:00Zoai:scielo:S1516-14392018000600233Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2018-10-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
title Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
spellingShingle Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
Kramer,Gustavo Raúl
corrosion
aluminum alloys
ethanol
title_short Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
title_full Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
title_fullStr Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
title_full_unstemmed Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
title_sort Evaluation of Corrosion Resistance of Commercial Aluminum Alloys in Ethanol Solutions
author Kramer,Gustavo Raúl
author_facet Kramer,Gustavo Raúl
Méndez,Claudia Marcela
Ares,Alicia Esther
author_role author
author2 Méndez,Claudia Marcela
Ares,Alicia Esther
author2_role author
author
dc.contributor.author.fl_str_mv Kramer,Gustavo Raúl
Méndez,Claudia Marcela
Ares,Alicia Esther
dc.subject.por.fl_str_mv corrosion
aluminum alloys
ethanol
topic corrosion
aluminum alloys
ethanol
description In the present research, we studied the corrosion resistance of commercial aluminum alloys exposed to ethanol produced in the northeastern region of Argentina and to commercial ethanol as reference medium. Electrochemical tests of potentiodynamic polarization and weight loss were performed by immersion at temperatures below the boiling point of ethanol (25 °C, 40 °C and 50 °C). The results showed that the increase in the corrosion rate of the alloys is directly proportional to the increase in the temperature of the solution, and that the combined action of contaminants in the alcohol (water, organic acids or aggressive ions) contributed to the increase in the aggressiveness of the environment. Specifically, through the results of the gravimetric tests, corrosion products characteristic of the formation of pitting corrosion and alkoxidation were observed. In contrast to the above, the existence of the pitting corrosion mechanism was demonstrated by defining a pitting potential in the potentiodynamic polarization curves.
publishDate 2018
dc.date.none.fl_str_mv 2018-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600233
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392018000600233
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2017-0272
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.21 n.6 2018
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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