High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium

Abstract Comprehending the corrosion mechanism of magnesium is of major interest in diverse fields. Typically, hydrogen evolution reaction is considered as the only cathodic reaction during Mg corrosion. However, recent works demonstrate importance of considering oxygen reduction reaction (ORR) as a...

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Autores principales:	Cheng Wang, Di Mei, Gert Wiese, Linqian Wang, Min Deng, Sviatlana V. Lamaka, Mikhail L. Zheludkevich
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/9932b145835f45afb2eaaeaacba9b9f5
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spelling	oai:doaj.org-article:9932b145835f45afb2eaaeaacba9b9f52021-12-02T13:57:00ZHigh rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium10.1038/s41529-020-00146-12397-2106https://doaj.org/article/9932b145835f45afb2eaaeaacba9b9f52020-12-01T00:00:00Zhttps://doi.org/10.1038/s41529-020-00146-1https://doaj.org/toc/2397-2106Abstract Comprehending the corrosion mechanism of magnesium is of major interest in diverse fields. Typically, hydrogen evolution reaction is considered as the only cathodic reaction during Mg corrosion. However, recent works demonstrate importance of considering oxygen reduction reaction (ORR) as a second cathodic process at specific conditions. With oxygen micro-optode, we show that ORR rate was higher on slower corroding ultra-high-purity Mg (UHP-Mg), while lower on faster corroding commercially pure Mg (CP-Mg), where massive hydroxide layer impeded oxygen permeation. These findings shed light on yet another facet of complex mechanism of Mg corrosion.Cheng WangDi MeiGert WieseLinqian WangMin DengSviatlana V. LamakaMikhail L. ZheludkevichNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492ENnpj Materials Degradation, Vol 4, Iss 1, Pp 1-5 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Materials of engineering and construction. Mechanics of materials TA401-492 Cheng Wang Di Mei Gert Wiese Linqian Wang Min Deng Sviatlana V. Lamaka Mikhail L. Zheludkevich High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
description	Abstract Comprehending the corrosion mechanism of magnesium is of major interest in diverse fields. Typically, hydrogen evolution reaction is considered as the only cathodic reaction during Mg corrosion. However, recent works demonstrate importance of considering oxygen reduction reaction (ORR) as a second cathodic process at specific conditions. With oxygen micro-optode, we show that ORR rate was higher on slower corroding ultra-high-purity Mg (UHP-Mg), while lower on faster corroding commercially pure Mg (CP-Mg), where massive hydroxide layer impeded oxygen permeation. These findings shed light on yet another facet of complex mechanism of Mg corrosion.
format	article
author	Cheng Wang Di Mei Gert Wiese Linqian Wang Min Deng Sviatlana V. Lamaka Mikhail L. Zheludkevich
author_facet	Cheng Wang Di Mei Gert Wiese Linqian Wang Min Deng Sviatlana V. Lamaka Mikhail L. Zheludkevich
author_sort	Cheng Wang
title	High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
title_short	High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
title_full	High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
title_fullStr	High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
title_full_unstemmed	High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
title_sort	high rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/9932b145835f45afb2eaaeaacba9b9f5
work_keys_str_mv	AT chengwang highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT dimei highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT gertwiese highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT linqianwang highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT mindeng highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT sviatlanavlamaka highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium AT mikhaillzheludkevich highrateoxygenreductionreactionduringcorrosionofultrahighpuritymagnesium
_version_	1718392335616704512

High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium

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