Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , , , , , |
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=S1516-14392022000200205 |
Resumo: | Abstract Flow accelerated corrosion (FAC) is a steel degradation that occurs in heat recovery steam generators in the power industry. The mechanism of this corrosion comprises an electrochemical dissolution of the semi-protective magnetite layer (Fe3O4) that is formed within the pipes employed in the boilers. The FAC is influenced by different factors such as fluid velocity, pH and dissolved oxygen concentration. In this context, Rotating Cage tests were used to evaluate the influence of pH and dissolved oxygen content on FAC of A210, P11 and P22 steels. General corrosion was lower for P11 and P22 steels, an effect consistent with the presence of chromium in their compositions. General corrosion was most critical at pH 8.5. The corrosion intensity decreased for the three steels when the dissolved oxygen concentration increased, at 2 m/s. This behavior is coherent considering the most effective precipitation of Fe2O3 inside the pores of the Fe3O4 layer in a more oxidizing environment. For 3 m/s, the corrosion intensity increased for both materials when oxygen increased, showing the shear stress effect. These behaviors were more significant at pH 8.5. About pitting corrosion, the analyzes show localized attack in the majority of coupons, however with very low number of pits. |
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Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production IndustriesFACRotating CageCarbon SteelMagnetite LayerAbstract Flow accelerated corrosion (FAC) is a steel degradation that occurs in heat recovery steam generators in the power industry. The mechanism of this corrosion comprises an electrochemical dissolution of the semi-protective magnetite layer (Fe3O4) that is formed within the pipes employed in the boilers. The FAC is influenced by different factors such as fluid velocity, pH and dissolved oxygen concentration. In this context, Rotating Cage tests were used to evaluate the influence of pH and dissolved oxygen content on FAC of A210, P11 and P22 steels. General corrosion was lower for P11 and P22 steels, an effect consistent with the presence of chromium in their compositions. General corrosion was most critical at pH 8.5. The corrosion intensity decreased for the three steels when the dissolved oxygen concentration increased, at 2 m/s. This behavior is coherent considering the most effective precipitation of Fe2O3 inside the pores of the Fe3O4 layer in a more oxidizing environment. For 3 m/s, the corrosion intensity increased for both materials when oxygen increased, showing the shear stress effect. These behaviors were more significant at pH 8.5. About pitting corrosion, the analyzes show localized attack in the majority of coupons, however with very low number of pits.ABM, ABC, ABPol2022-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000200205Materials Research v.25 suppl.1 2022reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2021-0520info:eu-repo/semantics/openAccessMoreira,Rogaciano M.Almeida,Tatiana C.Bandeira,Merlin C. E.Assunção,Felipe R. S.Carvalho,Juliana F. A.Silva,Elaine F.Verbicario,João V. T.Mattos,Oscar R.Oliveira,Jefferson R.Bonfim,André L. C.Novgorodecev,André R.eng2022-04-11T00:00:00Zoai:scielo:S1516-14392022000200205Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2022-04-11T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
title |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
spellingShingle |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries Moreira,Rogaciano M. FAC Rotating Cage Carbon Steel Magnetite Layer |
title_short |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
title_full |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
title_fullStr |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
title_full_unstemmed |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
title_sort |
Evaluation of Flow Accelerated Corrosion in Typical Recovery Boiler Environments of Energy Production Industries |
author |
Moreira,Rogaciano M. |
author_facet |
Moreira,Rogaciano M. Almeida,Tatiana C. Bandeira,Merlin C. E. Assunção,Felipe R. S. Carvalho,Juliana F. A. Silva,Elaine F. Verbicario,João V. T. Mattos,Oscar R. Oliveira,Jefferson R. Bonfim,André L. C. Novgorodecev,André R. |
author_role |
author |
author2 |
Almeida,Tatiana C. Bandeira,Merlin C. E. Assunção,Felipe R. S. Carvalho,Juliana F. A. Silva,Elaine F. Verbicario,João V. T. Mattos,Oscar R. Oliveira,Jefferson R. Bonfim,André L. C. Novgorodecev,André R. |
author2_role |
author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Moreira,Rogaciano M. Almeida,Tatiana C. Bandeira,Merlin C. E. Assunção,Felipe R. S. Carvalho,Juliana F. A. Silva,Elaine F. Verbicario,João V. T. Mattos,Oscar R. Oliveira,Jefferson R. Bonfim,André L. C. Novgorodecev,André R. |
dc.subject.por.fl_str_mv |
FAC Rotating Cage Carbon Steel Magnetite Layer |
topic |
FAC Rotating Cage Carbon Steel Magnetite Layer |
description |
Abstract Flow accelerated corrosion (FAC) is a steel degradation that occurs in heat recovery steam generators in the power industry. The mechanism of this corrosion comprises an electrochemical dissolution of the semi-protective magnetite layer (Fe3O4) that is formed within the pipes employed in the boilers. The FAC is influenced by different factors such as fluid velocity, pH and dissolved oxygen concentration. In this context, Rotating Cage tests were used to evaluate the influence of pH and dissolved oxygen content on FAC of A210, P11 and P22 steels. General corrosion was lower for P11 and P22 steels, an effect consistent with the presence of chromium in their compositions. General corrosion was most critical at pH 8.5. The corrosion intensity decreased for the three steels when the dissolved oxygen concentration increased, at 2 m/s. This behavior is coherent considering the most effective precipitation of Fe2O3 inside the pores of the Fe3O4 layer in a more oxidizing environment. For 3 m/s, the corrosion intensity increased for both materials when oxygen increased, showing the shear stress effect. These behaviors were more significant at pH 8.5. About pitting corrosion, the analyzes show localized attack in the majority of coupons, however with very low number of pits. |
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=S1516-14392022000200205 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392022000200205 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2021-0520 |
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 suppl.1 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 |
_version_ |
1754212681798123520 |