Enrichment efficiency of noble alloying elements on magnesium and effect on hydrogen evolution

P. Gore; T. W. Cain; J. Laird; J. R. Scully; N. Birbilis; V. S. Raja

doi:10.1016/j.corsci.2019.02.026

Enrichment efficiency of noble alloying elements on magnesium and effect on hydrogen evolution

P. Gore, T. W. Cain, J. Laird, J. R. Scully, N. Birbilis, V. S. Raja^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

Abstract

The role of noble element enrichment as cathodic sites for hydrogen evolution during the anodic polarisation of magnesium was evaluated by direct quantification of indium and gold enrichment using Particle-Induced X-ray Emission (PIXE). Magnesium alloyed with gold was shown to have a higher enrichment efficiency than magnesium alloyed with indium. However, the anodically induced ‘cathodic activation’ efficiency of magnesium alloyed with indium was higher. The estimated hydrogen evolution occurring at sites of enriched indium or gold was seen to be very small compared to the measured overall increased hydrogen evolution upon the respective alloys during anodic polarisation.

Original language	English
Pages (from-to)	206-218
Number of pages	13
Journal	Corrosion Science
Volume	151
DOIs	https://doi.org/10.1016/j.corsci.2019.02.026
Publication status	Published - 1 May 2019

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title = "Enrichment efficiency of noble alloying elements on magnesium and effect on hydrogen evolution",

abstract = "The role of noble element enrichment as cathodic sites for hydrogen evolution during the anodic polarisation of magnesium was evaluated by direct quantification of indium and gold enrichment using Particle-Induced X-ray Emission (PIXE). Magnesium alloyed with gold was shown to have a higher enrichment efficiency than magnesium alloyed with indium. However, the anodically induced {\textquoteleft}cathodic activation{\textquoteright} efficiency of magnesium alloyed with indium was higher. The estimated hydrogen evolution occurring at sites of enriched indium or gold was seen to be very small compared to the measured overall increased hydrogen evolution upon the respective alloys during anodic polarisation.",

keywords = "Enrichment, Gold, Hydrogen evolution, Indium, Magnesium",

author = "P. Gore and Cain, {T. W.} and J. Laird and Scully, {J. R.} and N. Birbilis and Raja, {V. S.}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

year = "2019",

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doi = "10.1016/j.corsci.2019.02.026",

language = "English",

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T1 - Enrichment efficiency of noble alloying elements on magnesium and effect on hydrogen evolution

AU - Gore, P.

AU - Cain, T. W.

AU - Laird, J.

AU - Scully, J. R.

AU - Birbilis, N.

AU - Raja, V. S.

PY - 2019/5/1

Y1 - 2019/5/1

N2 - The role of noble element enrichment as cathodic sites for hydrogen evolution during the anodic polarisation of magnesium was evaluated by direct quantification of indium and gold enrichment using Particle-Induced X-ray Emission (PIXE). Magnesium alloyed with gold was shown to have a higher enrichment efficiency than magnesium alloyed with indium. However, the anodically induced ‘cathodic activation’ efficiency of magnesium alloyed with indium was higher. The estimated hydrogen evolution occurring at sites of enriched indium or gold was seen to be very small compared to the measured overall increased hydrogen evolution upon the respective alloys during anodic polarisation.

AB - The role of noble element enrichment as cathodic sites for hydrogen evolution during the anodic polarisation of magnesium was evaluated by direct quantification of indium and gold enrichment using Particle-Induced X-ray Emission (PIXE). Magnesium alloyed with gold was shown to have a higher enrichment efficiency than magnesium alloyed with indium. However, the anodically induced ‘cathodic activation’ efficiency of magnesium alloyed with indium was higher. The estimated hydrogen evolution occurring at sites of enriched indium or gold was seen to be very small compared to the measured overall increased hydrogen evolution upon the respective alloys during anodic polarisation.

KW - Enrichment

KW - Gold

KW - Hydrogen evolution

KW - Indium

KW - Magnesium

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U2 - 10.1016/j.corsci.2019.02.026

DO - 10.1016/j.corsci.2019.02.026

M3 - Article

SN - 0010-938X

VL - 151

SP - 206

EP - 218

JO - Corrosion Science

JF - Corrosion Science

ER -

Enrichment efficiency of noble alloying elements on magnesium and effect on hydrogen evolution

Abstract

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