The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration

Detalhes bibliográficos
Autor(a) principal: Carvalho,M. B. L.
Data de Publicação: 2022
Outros Autores: Bott,I. S., Forero,A. B., Ponciano,J. A. C.
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=S1516-14392022000100278
Resumo: Abstract The corrosion evaluation of steels in the oil and gas industry environments is a crucial issue because corrosion can cause economic and human losses. It is well known that H2S can be originated from different processes in the oil and gas industry, accelerating the corrosion process. The objective of this work was to evaluate the H2S corrosion resistance of an API 5L X80 steel and its welded joint obtained by submerged arc welding process (SAW). All tests were performed in an aerated 5% wt NaCl and thiosulphate aqueous solution. The H2S concentration, pH, weight loss, electrochemical tests, and microstructure were considered. The results obtained showed an increase of the corrosion rate values, with decreasing pH and increasing concentration of H2S generated by the thiosulphate. For the lowest H2S concentrations, the corrosion process was inhibited, due to the formation of a partially protective film on the samples’ surfaces. The heat affected zone (HAZ) showed severe localized corrosion attack which was attributed to the microstructural characteristics of this region.
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spelling The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S ConcentrationCorrosionH2SAPI 5L X80Welded jointElectrochemical testsWeight loss testsAbstract The corrosion evaluation of steels in the oil and gas industry environments is a crucial issue because corrosion can cause economic and human losses. It is well known that H2S can be originated from different processes in the oil and gas industry, accelerating the corrosion process. The objective of this work was to evaluate the H2S corrosion resistance of an API 5L X80 steel and its welded joint obtained by submerged arc welding process (SAW). All tests were performed in an aerated 5% wt NaCl and thiosulphate aqueous solution. The H2S concentration, pH, weight loss, electrochemical tests, and microstructure were considered. The results obtained showed an increase of the corrosion rate values, with decreasing pH and increasing concentration of H2S generated by the thiosulphate. For the lowest H2S concentrations, the corrosion process was inhibited, due to the formation of a partially protective film on the samples’ surfaces. The heat affected zone (HAZ) showed severe localized corrosion attack which was attributed to the microstructural characteristics of this region.ABM, ABC, ABPol2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100278Materials Research v.25 2022reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2021-0443info:eu-repo/semantics/openAccessCarvalho,M. B. L.Bott,I. S.Forero,A. B.Ponciano,J. A. C.eng2022-02-23T00:00:00Zoai:scielo:S1516-14392022000100278Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2022-02-23T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
title The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
spellingShingle The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
Carvalho,M. B. L.
Corrosion
H2S
API 5L X80
Welded joint
Electrochemical tests
Weight loss tests
title_short The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
title_full The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
title_fullStr The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
title_full_unstemmed The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
title_sort The Corrosion Process of an API 5L X80 Welded Joint in a System with Different pH and H2S Concentration
author Carvalho,M. B. L.
author_facet Carvalho,M. B. L.
Bott,I. S.
Forero,A. B.
Ponciano,J. A. C.
author_role author
author2 Bott,I. S.
Forero,A. B.
Ponciano,J. A. C.
author2_role author
author
author
dc.contributor.author.fl_str_mv Carvalho,M. B. L.
Bott,I. S.
Forero,A. B.
Ponciano,J. A. C.
dc.subject.por.fl_str_mv Corrosion
H2S
API 5L X80
Welded joint
Electrochemical tests
Weight loss tests
topic Corrosion
H2S
API 5L X80
Welded joint
Electrochemical tests
Weight loss tests
description Abstract The corrosion evaluation of steels in the oil and gas industry environments is a crucial issue because corrosion can cause economic and human losses. It is well known that H2S can be originated from different processes in the oil and gas industry, accelerating the corrosion process. The objective of this work was to evaluate the H2S corrosion resistance of an API 5L X80 steel and its welded joint obtained by submerged arc welding process (SAW). All tests were performed in an aerated 5% wt NaCl and thiosulphate aqueous solution. The H2S concentration, pH, weight loss, electrochemical tests, and microstructure were considered. The results obtained showed an increase of the corrosion rate values, with decreasing pH and increasing concentration of H2S generated by the thiosulphate. For the lowest H2S concentrations, the corrosion process was inhibited, due to the formation of a partially protective film on the samples’ surfaces. The heat affected zone (HAZ) showed severe localized corrosion attack which was attributed to the microstructural characteristics of this region.
publishDate 2022
dc.date.none.fl_str_mv 2022-01-01
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=S1516-14392022000100278
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000100278
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2021-0443
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.25 2022
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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