pH evolution around the AZ31/Steel galvanic couple under gelled-electrolytes: A numerical and experimental study
Source abstract
Abstract
Abstract This work presents an experimentally validated theoretical model for Mg alloy dissolution that accounts for transport phenomena. The galvanic interaction between AZ31 Mg alloy and low carbon steels in a solid electrolyte was simulated. The use of a solid agar-based electrolyte allowed to neglect the strong convective effects that are normally present during Mg alloy dissolution caused by copious hydrogen evolution. Furthermore, it allowed for a constant electrolyte thickness to be fixed. The gelled-electrolyte contained a pH indicator to permit a reliable visual tracking of the transient propagation of H+ and OH− ions during the electrochemical reaction.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Hydrogen Storage and Materials
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References (40)
Show source-provided references
1. Accurate electrochemical measurement of magnesium corrosion rates; a combined impedance, mass-loss and hydrogen collection study10.1016/j.electacta.2013.12.124 ↗
2. Evolution of hydrogen at dissolving magnesium surfaces10.1016/j.corsci.2013.01.017 ↗
3. Effect of impurities on the enhanced catalytic activity for hydrogen evolution in high purity magnesium10.1016/j.electacta.2015.03.021 ↗
4. The source of anodic hydrogen evolution on ultra high purity magnesium10.1016/j.electacta.2016.07.018 ↗
5. Corrosion behaviour of magnesium/aluminium alloys in 3.5wt.nacl10.1016/j.corsci.2007.11.005 ↗
6. Corrosion mechanisms of magnesium alloys10.1002/(SICI)1527-2648(199909)1:1<11::AID-ADEM11>3.0.CO;2-N ↗
7. Understanding magnesium corrosion—a framework for improved alloy performance10.1002/adem.200310405 ↗
8. In vivo corrosion of four magnesium alloys and the associated bone response10.1016/j.biomaterials.2004.09.049 ↗
9. In vitro corrosion and biocompatibility of binary magnesium alloys10.1016/j.biomaterials.2008.10.021 ↗
10. Mechanical performance evaluation of cast magnesium alloys for automotive and aeronautical applications10.1115/1.2744407 ↗
11. Wendt · 2016 · 65
12. Superior light metals by texture engineering: optimized aluminum and magnesium alloys for automotive applications10.1016/j.actamat.2012.10.044 ↗
13. Magnesium batteries: current state of the art, issues and future perspectives10.3762/bjnano.5.143 ↗
14. Prototype systems for rechargeable magnesium batteries10.1038/35037553 ↗
15. Experimental measurement and computer simulation of galvanic corrosion of magnesium coupled to steel10.1002/adem.200600206 ↗
16. Modeling in vivo corrosion of az31 as temporary biodegradable implants. experimental validation in rats10.1016/j.msec.2014.04.033 ↗
17. Effect of impurities and electrolyte thickness on degradation of pure magnesium: a finite element study10.1016/j.mseb.2011.03.016 ↗
18. An arbitrary lagrangian-eulerian model for studying the influences of corrosion product deposition on bimetallic corrosion10.1007/s10008-012-1935-9 ↗
19. Simulation of corrosion product deposit layer growth on bare magnesium galvanically coupled to aluminum10.1149/2.0071501jes ↗
20. 2000 wr whitney award lecture: visualizing corrosion10.5006/1.3294386 ↗
21. The steel-aluminum galvanic system under thin electrolyte films: simulation and validation10.1149/09401.0269ecst ↗
22. The corrosion products in a carbon steel/aluminum alloy galvanic couple under thin electrolyte films: an efficient model10.1016/j.elecom.2019.106485 ↗
23. A multi-analytical approach for the validation of a jellified electrolyte: application to the study of ancient bronze patina10.1016/j.microc.2017.05.015 ↗
24. The use of agar gelled electrolyte for in situ electrochemical measurements on metallic cultural heritage10.1016/j.electacta.2015.09.116 ↗
25. Advances in the design of a gel-cell electrochemical sensor for corrosion measurements on metallic cultural heritage10.1016/j.snb.2018.01.180 ↗
26. Design of gel electrolytes for electrochemical studies on metal surfaces with complex geometry10.1016/j.electacta.2016.10.081 ↗
27. Comparison of liquid and gel electrolytes for the investigation of pitting corrosion on stainless steels10.1088/1757-899X/882/1/012010 ↗
28. Electrochemical characterization of the hydrophobic interaction and the natural convection within agarose gel10.1016/S1452-3981(23)11213-2 ↗
29. New ionically conductive solids of polysaccharides containing excess water10.1016/j.jelechem.2004.02.031 ↗
30. A review of the biochemistry of heavy metal biosorption by brown algae10.1016/S0043-1354(03)00293-8 ↗
31. Corrosion protection of steel cut-edges by hot-dip galvanized al (zn, mg) coatings in 1 wt% NaCl: Part II. Numerical simulations10.1002/maco.201810210 ↗
32. Reliability of numerical models for simulating galvanic corrosion processes10.1016/j.electacta.2012.04.068 ↗
33. Einstein-smoluchowski diffusion equation: a discussion10.1088/0031-8949/70/2-3/008 ↗
34. Newman · 2004
35. Deconinck · 2012 · vol. 75
36. Numerical simulation of the aluminum-zinc-steel galvanic system for new designs of automotive chassis10.1002/maco.201911166 ↗
37. Numerical modeling and solution of galvanic corrosion systems: Part I. Governing differential equation and electrodic boundary conditions10.5006/1.3585299 ↗
38. Modeling bimetallic corrosion under thin electrolyte films10.1016/j.corsci.2010.09.010 ↗
39. Numerical modelling of the galvanic coupling in aluminium alloys: a discussion on the application of local probe techniques10.1016/j.corsci.2009.08.051 ↗
40. Mathematical modeling of the formation of calcareous deposits on cathodically protected steel in seawater10.1149/1.2056150 ↗