Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution

The corrosion behavior of α-Mg and β-Li phases in a duplex Mg–8Li (wt. %) alloy is investigated in this work. The results reveal that the Mg–8Li alloy has a eutectic structure and is composed of equivalent α-Mg and β-Li phases. Corrosion preferentially propagates toward the α-Mg phase following init...

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Main Authors: Linjie Dong, Xi Liu, Jiexi Liang, Chuanqiang Li, Yong Dong, Zhengrong Zhang
Format: Article
Language:English
Published: Elsevier 2021-08-01
Series:Electrochemistry Communications
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1388248121001715
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author Linjie Dong
Xi Liu
Jiexi Liang
Chuanqiang Li
Yong Dong
Zhengrong Zhang
author_facet Linjie Dong
Xi Liu
Jiexi Liang
Chuanqiang Li
Yong Dong
Zhengrong Zhang
author_sort Linjie Dong
collection DOAJ
description The corrosion behavior of α-Mg and β-Li phases in a duplex Mg–8Li (wt. %) alloy is investigated in this work. The results reveal that the Mg–8Li alloy has a eutectic structure and is composed of equivalent α-Mg and β-Li phases. Corrosion preferentially propagates toward the α-Mg phase following initial corrosion at the α-Mg/β-Li interface. The surface of the β-Li phase is eventually destroyed after a longer immersion time. Meanwhile, the β-Li phase shows intergranular corrosion, while transgranular corrosion filaments can be seen in the α-Mg phase. Unlike the α-Mg phase, the local potential distribution on the polarization plot of the β-Li phase indicates that the surface film provides excellent protection, which is also confirmed by the results of Raman spectroscopy.
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spelling doaj.art-752d2ee995ae4d79a8314c2637daf9af2022-12-21T23:36:32ZengElsevierElectrochemistry Communications1388-24812021-08-01129107087Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solutionLinjie Dong0Xi Liu1Jiexi Liang2Chuanqiang Li3Yong Dong4Zhengrong Zhang5School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaCorresponding author.; School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaSchool of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, ChinaThe corrosion behavior of α-Mg and β-Li phases in a duplex Mg–8Li (wt. %) alloy is investigated in this work. The results reveal that the Mg–8Li alloy has a eutectic structure and is composed of equivalent α-Mg and β-Li phases. Corrosion preferentially propagates toward the α-Mg phase following initial corrosion at the α-Mg/β-Li interface. The surface of the β-Li phase is eventually destroyed after a longer immersion time. Meanwhile, the β-Li phase shows intergranular corrosion, while transgranular corrosion filaments can be seen in the α-Mg phase. Unlike the α-Mg phase, the local potential distribution on the polarization plot of the β-Li phase indicates that the surface film provides excellent protection, which is also confirmed by the results of Raman spectroscopy.http://www.sciencedirect.com/science/article/pii/S1388248121001715Mg-Li alloySurface filmCorrosionElectrochemicalRaman spectroscopy
spellingShingle Linjie Dong
Xi Liu
Jiexi Liang
Chuanqiang Li
Yong Dong
Zhengrong Zhang
Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
Electrochemistry Communications
Mg-Li alloy
Surface film
Corrosion
Electrochemical
Raman spectroscopy
title Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
title_full Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
title_fullStr Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
title_full_unstemmed Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
title_short Corrosion behavior of a eutectic Mg–8Li alloy in NaCl solution
title_sort corrosion behavior of a eutectic mg 8li alloy in nacl solution
topic Mg-Li alloy
Surface film
Corrosion
Electrochemical
Raman spectroscopy
url http://www.sciencedirect.com/science/article/pii/S1388248121001715
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AT xiliu corrosionbehaviorofaeutecticmg8lialloyinnaclsolution
AT jiexiliang corrosionbehaviorofaeutecticmg8lialloyinnaclsolution
AT chuanqiangli corrosionbehaviorofaeutecticmg8lialloyinnaclsolution
AT yongdong corrosionbehaviorofaeutecticmg8lialloyinnaclsolution
AT zhengrongzhang corrosionbehaviorofaeutecticmg8lialloyinnaclsolution