Corrosion resistance of WE43 Mg alloy in sodium chloride solution
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.matchemphys.2021.124930 http://hdl.handle.net/11449/221988 |
Resumo: | Mg-based alloys are promising light materials for structural applications such as spare parts and assembles in aerospace manufacturing, but most of them are prone to corrode. In this work, the corrosion behavior of the WE43 Mg alloy in 0.6 M NaCl solution was appraised and compared to that of commercially pure Mg. Immersion tests allowed to assess the corrosion rate and the products formed on the exposed surfaces for up to 168 h. It was found that the corrosion rate of the WE43 was about 10- to 100-fold lower compared to commercially pure Mg. The onset of the corrosion resistance of the WE43 was ascribed to the nature of the corrosion product layer and its integrity on the surface, related to the low kinetics of the cathodic reaction of hydrogen gas evolution. The electrochemical impedance spectroscopy, potentiodynamic polarization, and kelvin probe force microscopy data reinforced the effect of the alloying elements on i) the formation of Y- and Nd-rich oxides, ii) the reduction of the intensity of the hydrogen gas evolution at the underneath surface, and iii) the formation of micro-anode second phases that did not compromise the corrosion resistance. Thus, this study contributes to the prospect of using alloys such as WE43 for applications where strong and light alloys with attractive corrosion resistance in a chloride-rich environment are requested. |
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Corrosion resistance of WE43 Mg alloy in sodium chloride solutionChloride solutionCorrosion rateMagnesiumMicro-anodesRare earth elementsMg-based alloys are promising light materials for structural applications such as spare parts and assembles in aerospace manufacturing, but most of them are prone to corrode. In this work, the corrosion behavior of the WE43 Mg alloy in 0.6 M NaCl solution was appraised and compared to that of commercially pure Mg. Immersion tests allowed to assess the corrosion rate and the products formed on the exposed surfaces for up to 168 h. It was found that the corrosion rate of the WE43 was about 10- to 100-fold lower compared to commercially pure Mg. The onset of the corrosion resistance of the WE43 was ascribed to the nature of the corrosion product layer and its integrity on the surface, related to the low kinetics of the cathodic reaction of hydrogen gas evolution. The electrochemical impedance spectroscopy, potentiodynamic polarization, and kelvin probe force microscopy data reinforced the effect of the alloying elements on i) the formation of Y- and Nd-rich oxides, ii) the reduction of the intensity of the hydrogen gas evolution at the underneath surface, and iii) the formation of micro-anode second phases that did not compromise the corrosion resistance. Thus, this study contributes to the prospect of using alloys such as WE43 for applications where strong and light alloys with attractive corrosion resistance in a chloride-rich environment are requested.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Engineering School of São Carlos University of São Paulo Department of Materials Engineering, Av. Joao Dagnone, 1100 Jd. Sta AngelinaFederal University of São Carlos Department of Materials Science and Engineering, Rod. Washington Luis, CEP, SPSão Paulo State University (UNESP) Campus of São João da Boa Vista, Av. Profa Isette Corrêa Fontão, 505, Jardim Das Flores, SPEmbraer, SPSão Paulo State University (UNESP) Campus of São João da Boa Vista, Av. Profa Isette Corrêa Fontão, 505, Jardim Das Flores, SPUniversidade de São Paulo (USP)Universidade Federal de São Carlos (UFSCar)Universidade Estadual Paulista (UNESP)EmbraerPereira, Gualter SilvaKoga, Guilherme YuukiAvila, Julian Arnaldo [UNESP]Bittencourt, Icaro MarinoFernandez, FernandoMiyazaki, Marcos HidekiBotta, Walter JoséBose Filho, Waldek Wladimir2022-04-28T19:41:40Z2022-04-28T19:41:40Z2021-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.matchemphys.2021.124930Materials Chemistry and Physics, v. 272.0254-0584http://hdl.handle.net/11449/22198810.1016/j.matchemphys.2021.1249302-s2.0-85110569024Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Chemistry and Physicsinfo:eu-repo/semantics/openAccess2022-04-28T19:41:40Zoai:repositorio.unesp.br:11449/221988Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:57:50.546184Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
title |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
spellingShingle |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution Pereira, Gualter Silva Chloride solution Corrosion rate Magnesium Micro-anodes Rare earth elements |
title_short |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
title_full |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
title_fullStr |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
title_full_unstemmed |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
title_sort |
Corrosion resistance of WE43 Mg alloy in sodium chloride solution |
author |
Pereira, Gualter Silva |
author_facet |
Pereira, Gualter Silva Koga, Guilherme Yuuki Avila, Julian Arnaldo [UNESP] Bittencourt, Icaro Marino Fernandez, Fernando Miyazaki, Marcos Hideki Botta, Walter José Bose Filho, Waldek Wladimir |
author_role |
author |
author2 |
Koga, Guilherme Yuuki Avila, Julian Arnaldo [UNESP] Bittencourt, Icaro Marino Fernandez, Fernando Miyazaki, Marcos Hideki Botta, Walter José Bose Filho, Waldek Wladimir |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Federal de São Carlos (UFSCar) Universidade Estadual Paulista (UNESP) Embraer |
dc.contributor.author.fl_str_mv |
Pereira, Gualter Silva Koga, Guilherme Yuuki Avila, Julian Arnaldo [UNESP] Bittencourt, Icaro Marino Fernandez, Fernando Miyazaki, Marcos Hideki Botta, Walter José Bose Filho, Waldek Wladimir |
dc.subject.por.fl_str_mv |
Chloride solution Corrosion rate Magnesium Micro-anodes Rare earth elements |
topic |
Chloride solution Corrosion rate Magnesium Micro-anodes Rare earth elements |
description |
Mg-based alloys are promising light materials for structural applications such as spare parts and assembles in aerospace manufacturing, but most of them are prone to corrode. In this work, the corrosion behavior of the WE43 Mg alloy in 0.6 M NaCl solution was appraised and compared to that of commercially pure Mg. Immersion tests allowed to assess the corrosion rate and the products formed on the exposed surfaces for up to 168 h. It was found that the corrosion rate of the WE43 was about 10- to 100-fold lower compared to commercially pure Mg. The onset of the corrosion resistance of the WE43 was ascribed to the nature of the corrosion product layer and its integrity on the surface, related to the low kinetics of the cathodic reaction of hydrogen gas evolution. The electrochemical impedance spectroscopy, potentiodynamic polarization, and kelvin probe force microscopy data reinforced the effect of the alloying elements on i) the formation of Y- and Nd-rich oxides, ii) the reduction of the intensity of the hydrogen gas evolution at the underneath surface, and iii) the formation of micro-anode second phases that did not compromise the corrosion resistance. Thus, this study contributes to the prospect of using alloys such as WE43 for applications where strong and light alloys with attractive corrosion resistance in a chloride-rich environment are requested. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-11-01 2022-04-28T19:41:40Z 2022-04-28T19:41:40Z |
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/10.1016/j.matchemphys.2021.124930 Materials Chemistry and Physics, v. 272. 0254-0584 http://hdl.handle.net/11449/221988 10.1016/j.matchemphys.2021.124930 2-s2.0-85110569024 |
url |
http://dx.doi.org/10.1016/j.matchemphys.2021.124930 http://hdl.handle.net/11449/221988 |
identifier_str_mv |
Materials Chemistry and Physics, v. 272. 0254-0584 10.1016/j.matchemphys.2021.124930 2-s2.0-85110569024 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials Chemistry and Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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_ |
1808128295615594496 |