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An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH
CORROSION, Volume: 73, Issue: 5, Pages: 494 - 505
Swansea University Author: Geraint Williams
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DOI (Published version): 10.5006/2282
Abstract
The kinetics of the hydrogen evolution reaction (HER) have been reported to increase upon pure magnesium (Mg) surfaces, following prior anodic polarisation or corrosion. This phenomenon is termed anodically induced âÂÂcathodic activationâÂÂ, which is not necessarily an elementary concept. The tend...
Published in: | CORROSION |
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ISSN: | 0010-9312 1938-159X |
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2017
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URI: | https://cronfa.swan.ac.uk/Record/cronfa32001 |
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2018-12-04T08:53:27.0631751 v2 32001 2017-02-16 An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH 0d8fc8d44e2a3c88ce61832f66f20d82 0000-0002-3399-5142 Geraint Williams Geraint Williams true false 2017-02-16 MTLS The kinetics of the hydrogen evolution reaction (HER) have been reported to increase upon pure magnesium (Mg) surfaces, following prior anodic polarisation or corrosion. This phenomenon is termed anodically induced âÂÂcathodic activationâÂÂ, which is not necessarily an elementary concept. The tendencies of other metals to exhibit cathodic activation has not been systematically explored in the past. In this study, an experimental survey of cathodic activation was conducted for different metals on the basis of understanding the origin of the cathodic activation phenomenon on Mg; including the metals Sc, Gd, La, Al, Sn, Pb and Ge, in 0.1 M NaCl with pH ranging from 3-11. Sc, Gd, La and Mg showed cathodic activation in solutions of various pH, whereas Al showed cathodic activation only in an acidic solution. Sn, Pb and Ge did not show significant cathodic activation across the pH range tested. It is proposed on the basis of the results herein, metals that tend to directly react with water to form hydroxides in aqueous electrolytes have a higher tendency to demonstrate cathodic activation. Journal Article CORROSION 73 5 494 505 0010-9312 1938-159X 31 5 2017 2017-05-31 10.5006/2282 COLLEGE NANME Materials Science and Engineering COLLEGE CODE MTLS Swansea University 2018-12-04T08:53:27.0631751 2017-02-16T11:30:18.8125601 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering R.L. Liu 1 S. Thomas 2 J.R. Scully 3 G. Williams 4 N. Birbilis 5 Geraint Williams 0000-0002-3399-5142 6 0032001-16022017113101.pdf liu2017.pdf 2017-02-16T11:31:01.8870000 Output 1819169 application/pdf Accepted Manuscript true 2017-05-15T00:00:00.0000000 true eng |
title |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
spellingShingle |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH Geraint Williams |
title_short |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
title_full |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
title_fullStr |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
title_full_unstemmed |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
title_sort |
An Experimental Survey of the Cathodic Activation of Metals Including Mg, Sc, Gd, La, Al, Sn, Pb, and Ge in Dilute Chloride Solutions of Varying pH |
author_id_str_mv |
0d8fc8d44e2a3c88ce61832f66f20d82 |
author_id_fullname_str_mv |
0d8fc8d44e2a3c88ce61832f66f20d82_***_Geraint Williams |
author |
Geraint Williams |
author2 |
R.L. Liu S. Thomas J.R. Scully G. Williams N. Birbilis Geraint Williams |
format |
Journal article |
container_title |
CORROSION |
container_volume |
73 |
container_issue |
5 |
container_start_page |
494 |
publishDate |
2017 |
institution |
Swansea University |
issn |
0010-9312 1938-159X |
doi_str_mv |
10.5006/2282 |
college_str |
Faculty of Science and Engineering |
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facultyofscienceandengineering |
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Faculty of Science and Engineering |
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facultyofscienceandengineering |
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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 |
document_store_str |
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description |
The kinetics of the hydrogen evolution reaction (HER) have been reported to increase upon pure magnesium (Mg) surfaces, following prior anodic polarisation or corrosion. This phenomenon is termed anodically induced âÂÂcathodic activationâÂÂ, which is not necessarily an elementary concept. The tendencies of other metals to exhibit cathodic activation has not been systematically explored in the past. In this study, an experimental survey of cathodic activation was conducted for different metals on the basis of understanding the origin of the cathodic activation phenomenon on Mg; including the metals Sc, Gd, La, Al, Sn, Pb and Ge, in 0.1 M NaCl with pH ranging from 3-11. Sc, Gd, La and Mg showed cathodic activation in solutions of various pH, whereas Al showed cathodic activation only in an acidic solution. Sn, Pb and Ge did not show significant cathodic activation across the pH range tested. It is proposed on the basis of the results herein, metals that tend to directly react with water to form hydroxides in aqueous electrolytes have a higher tendency to demonstrate cathodic activation. |
published_date |
2017-05-31T03:39:08Z |
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1763751754044801024 |
score |
11.016235 |