journal article·2020-03

Hydrogen evolution on bare Mg surfaces using the scratched electrode technique

Aline D. Gabbardo, G.S. Frankel

Corrosion Science· Volume 164
Publisher page

Abstract

Abstract The scratched electrode technique is used to study reaction rates of bared Mg surfaces with the aim of studying the anomalous hydrogen evolution phenomenon. Scratched Mg surfaces are more catalytic than filmed unscratched surfaces to dissolution and hydrogen evolution reactions and repassivation happens within milliseconds at anodic potentials in NaOH solution. The rate of anomalous hydrogen evolution reaction depends on surface condition, which for the bared scratch surface varies little with potential in this electrolyte. The reformation of an hydroxide monolayer limits dissolution and hydrogen evolution reactions. In environments containing chloride and sulfate, formation of a monolayer is less effective.
Source: openaire · Quality: candidate unverified · Source record ↗

Research context

OpenAlex topics: Magnesium Alloys: Properties and Applications · Hydrogen Storage and Materials · Corrosion Behavior and Inhibition

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

References (42)

Show source-provided references
1. Insights from a Recent Meeting: Current Status and Future Directions in Magnesium Corrosion Research10.5006/2255 ↗
2. Fundamentals and advances in magnesium alloy corrosion10.1016/j.pmatsci.2017.04.011 ↗
3. Evolution of hydrogen at dissolving magnesium surfaces10.1016/j.corsci.2013.01.017 ↗
4. Characterization of Localized Filament Corrosion Products at the Anodic Head on a Model Mg-Zn-Zr Alloy Surface10.5006/2268 ↗
5. Effect of impurities on the enhanced catalytic activity for hydrogen evolution in high purity magnesium10.1016/j.electacta.2015.03.021 ↗
6. The source of anodic hydrogen evolution on ultra high purity magnesium10.1016/j.electacta.2016.07.018 ↗
7. A study on magnesium corrosion by real-time imaging and electrochemical methods: relationship between local processes and hydrogen evolution10.1016/j.electacta.2016.03.043 ↗
8. A kinetic model explaining the enhanced rates of hydrogen evolution on anodically polarized magnesium in aqueous environments10.1016/j.elecom.2017.10.001 ↗
9. A mathematical description accounting for the superfluous hydrogen evolution and the inductive behaviour observed during electrochemical measurements on magnesium10.1016/j.electacta.2018.04.116 ↗
10. Evidence of the enrichment of transition metal elements on corroding magnesium surfaces using rutherford backscattering spectrometry10.1149/2.0541506jes ↗
11. The effect of iron re-deposition on the corrosion of impurity-containing magnesium
12. Application of 2D Pit Growth Method to Mg Thin Films: Part I. Initiation, Growth and Repassivation10.1149/2.0331911jes ↗
13. Application of 2D pit growth method to Mg thin films: part II. Salt film and hydrogen evolution10.1149/2.0351911jes ↗
14. Physical Characterization of Cathodically-Activated Corrosion Filaments on Magnesium Alloy AZ31B10.5006/1384 ↗
15. Role of segregated Iron at grain boundaries on Mg corrosion10.1149/2.0621802jes ↗
16. Towards a physical description for the origin of enhanced catalytic activity of corroding magnesium surfaces10.1016/j.electacta.2013.11.086 ↗
17. Corrosion mechanism and hydrogen evolution on Mg10.1016/j.cossms.2014.09.005 ↗
18. Hydrogen evolution during anodic polarization of Mg alloyed with Li, Ca, or Fe10.5006/1367 ↗
19. Investigating the effect of ferrous ions on the anomalous hydrogen evolution on magnesium in acidic ferrous chloride solution10.1149/2.0951813jes ↗
20. Anodic behavior of scratched silver electrodes in alkaline solution10.1016/0013-4686(80)87006-X ↗
21. Bare Surface Reaction Rates and Their Relation to Environment Controlled Cracking of Aluminum Alloys. I. Bare Surface Reaction Rates on Aluminum-7 Weight Percent Magnesium in Aqueous Solutions10.1149/1.2129893 ↗
22. The electrochemical behavior of scratched Iron surfaces in aqueous solutions10.1149/1.2127383 ↗
23. Reactions of scratched copper electrodes in aqueous solutions10.1149/1.2127233 ↗
24. Growth of passivating films on scratched 304L stainless steel in alkaline solution10.1016/0010-938X(83)90111-7 ↗
25. On the repassivation behavior of high-purity titanium and selected alpha, beta, and beta + alpha titanium alloys in aqueous chloride solutions10.1149/1.1836914 ↗
26. The Kinetics of Anodic Dissolution and Repassivation on Stainless Steel 304L in Solutions Containing Nitrate10.1149/1.3574367 ↗
27. Accelerated evolution of hydrogen on freshly generated metal surfaces in aqueous solution10.1149/1.2115789 ↗
28. Catalytic activity of freshly generated chromium electrode surfaces10.1038/301692a0 ↗
29. Investigating ion release using inline ICP during in situ scratch testing of an Mg-Li(-Al-Y-Zr) alloy10.1016/j.elecom.2019.01.001 ↗
30. Resistance to flow of current to scratched electrodes10.1149/1.2127238 ↗
31. Confirmation of the applicability of scratched electrode techniques for the determination of bare surface current densities10.1149/1.2086427 ↗
32. Verification of the validity of peak bare surface current densities obtained from the scratched electrode10.1149/1.2086028 ↗
33. Measurement of passive film effects on scratched electrode behavior10.1149/1.2220733 ↗
34. Limitations of Potentiostatic Repassivation Techniques and Their Relationship to the Applicability of the High Field Approximation to the Repassivation of Titanium10.1149/1.2044272 ↗
35. Repassivation Transients Measured with Thin Film Breaking Electrodes10.1149/1.2085652 ↗
36. The Role of Surface Films and Dissolution Products on the Negative Difference Effect for Magnesium: Comparison of Cl− versus Cl− Free Solutions10.1149/2.1371706jes ↗
37. The pH dependence of magnesium dissolution and hydrogen evolution during anodic polarization10.1149/2.0621507jes ↗
38. A novel approach to on-line measurement of gas evolution kinetics: application to the negative difference effect of Mg in chloride solution10.1016/j.electacta.2013.07.131 ↗
39. Use of sodium bicarbonate as a chloride-free aqueous electrolyte to explore film formation and the negative difference effect on pure magnesium10.1149/2.0171813jes ↗
40. A first-principles surface reaction kinetic model for hydrogen evolution under cathodic and anodic conditions on magnesium10.1149/2.1171609jes ↗
41. Aqueous electrochemistry of the magnesium surface: thermodynamic and kinetic profiles10.1016/j.corsci.2018.10.014 ↗
42. Understanding the enhanced rates of hydrogen evolution on dissolving magnesium10.1016/j.elecom.2019.106482 ↗