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

被引：34

作者：

Gore, P. ^{[1
,2
,3
]}

Cain, T. W. ^{[4
]}

Laird, J. ^{[5
,6
]}

Scully, J. R. ^{[4
]}

Birbilis, N. ^{[1
,7
]}

Raja, V. S. ^{[2
]}

机构：

[1] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[2] Indian Inst Technol, Dept Met Engn & Mat Sci, Mumbai 400076, Maharashtra, India

[3] IITB Monash Res Acad, Mumbai 400076, Maharashtra, India

[4] Univ Virginia, Dept Mat Sci & Engn, Charlottesville, VA 22904 USA

[5] CSIRO, Mineral Resources Flagship, Clayton, Vic 3168, Australia

[6] Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia

[7] Australian Natl Univ, Coll Engn & Comp Sci, Canberra, ACT 2601, Australia

来源：

CORROSION SCIENCE | 2019年 / 151卷

关键词：

Magnesium; Enrichment; Hydrogen evolution; Indium; Gold; ENHANCED CATALYTIC-ACTIVITY; LOCALIZED CORROSION; MG; ELECTROLYTE; DISSOLUTION; BEHAVIOR; METAL;

D O I：

10.1016/j.corsci.2019.02.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：206 / 218

页数：13

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