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Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge

R. L. Liu, M. F. Hurley, A. Kvryan, Geraint Williams Orcid Logo, J. R. Scully, N. Birbilis

Scientific Reports, Volume: 6, Issue: 1

Swansea University Author: Geraint Williams Orcid Logo

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DOI (Published version): 10.1038/srep28747

Abstract

The evolution of corrosion morphology and kinetics for magnesium (Mg) have been demonstrated to be influenced by cathodic activation, which implies that the rate of the cathodic partial reaction is enhanced as a result of anodic dissolution. This phenomenon was recently demonstrated to be moderated...

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Published in: Scientific Reports
ISSN: 2045-2322 2045-2322
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa29042
first_indexed 2016-07-04T18:24:34Z
last_indexed 2021-01-15T03:46:51Z
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spelling 2021-01-14T12:56:02.9286741 v2 29042 2016-07-04 Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge 0d8fc8d44e2a3c88ce61832f66f20d82 0000-0002-3399-5142 Geraint Williams Geraint Williams true false 2016-07-04 EAAS The evolution of corrosion morphology and kinetics for magnesium (Mg) have been demonstrated to be influenced by cathodic activation, which implies that the rate of the cathodic partial reaction is enhanced as a result of anodic dissolution. This phenomenon was recently demonstrated to be moderated by the use of arsenic (As) alloying as a poison for the cathodic reaction, leading to significantly improved corrosion resistance. The pursuit of alternatives to toxic As is important as a means to imparting a technologically safe and effective corrosion control method for Mg (and its alloys). In this work, Mg was microalloyed with germanium (Ge), with the aim of improving corrosion resistance by retarding cathodic activation. Based on a combined analysis herein, we report that Ge is potent in supressing the cathodic hydrogen evolution reaction (reduction of water) upon Mg, improving corrosion resistance. With the addition of Ge, cathodic activation of Mg subject to cyclic polarisation was also hindered, with beneficial implications for future Mg electrodes. Journal Article Scientific Reports 6 1 2045-2322 2045-2322 1 9 2016 2016-09-01 10.1038/srep28747 http://dx.doi.org/10.1038/srep28747 COLLEGE NANME Engineering and Applied Sciences School COLLEGE CODE EAAS Swansea University 2021-01-14T12:56:02.9286741 2016-07-04T14:05:25.3022665 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering R. L. Liu 1 M. F. Hurley 2 A. Kvryan 3 Geraint Williams 0000-0002-3399-5142 4 J. R. Scully 5 N. Birbilis 6 0029042-22072016124726.pdf Liu2016.pdf 2016-07-22T12:47:26.0530000 Output 1907220 application/pdf Version of Record true 2016-07-22T00:00:00.0000000 This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. false http://creativecommons.org/licenses/by/4.0/
title Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
spellingShingle Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
Geraint Williams
title_short Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
title_full Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
title_fullStr Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
title_full_unstemmed Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
title_sort Controlling the corrosion and cathodic activation of magnesium via microalloying additions of Ge
author_id_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82
author_id_fullname_str_mv 0d8fc8d44e2a3c88ce61832f66f20d82_***_Geraint Williams
author Geraint Williams
author2 R. L. Liu
M. F. Hurley
A. Kvryan
Geraint Williams
J. R. Scully
N. Birbilis
format Journal article
container_title Scientific Reports
container_volume 6
container_issue 1
publishDate 2016
institution Swansea University
issn 2045-2322
2045-2322
doi_str_mv 10.1038/srep28747
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
url http://dx.doi.org/10.1038/srep28747
document_store_str 1
active_str 0
description The evolution of corrosion morphology and kinetics for magnesium (Mg) have been demonstrated to be influenced by cathodic activation, which implies that the rate of the cathodic partial reaction is enhanced as a result of anodic dissolution. This phenomenon was recently demonstrated to be moderated by the use of arsenic (As) alloying as a poison for the cathodic reaction, leading to significantly improved corrosion resistance. The pursuit of alternatives to toxic As is important as a means to imparting a technologically safe and effective corrosion control method for Mg (and its alloys). In this work, Mg was microalloyed with germanium (Ge), with the aim of improving corrosion resistance by retarding cathodic activation. Based on a combined analysis herein, we report that Ge is potent in supressing the cathodic hydrogen evolution reaction (reduction of water) upon Mg, improving corrosion resistance. With the addition of Ge, cathodic activation of Mg subject to cyclic polarisation was also hindered, with beneficial implications for future Mg electrodes.
published_date 2016-09-01T19:04:26Z
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