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Electrochemical characterisation of magnesium and wrought magnesium alloys

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Published/Copyright: January 21, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 97 Issue 11

Abstract

The electrochemical behaviour of magnesium and different wrought alloys, AZ31, AE42, LAE442, and ZEK100, with and without heat treatment, was examined with the Mini-cell System by linear sweep voltammetry in 0.5 wt.% and 3.5 wt.% NaCl solution. The corrosion damage was characterised by scanning electron microscopy. Magnesium and the different alloys exhibited strong differences in their electrochemical behaviour. Alloying with aluminium increases the corrosion resistance. However, the magnitude of this improvement depends on uniform sizes and distributions of the Al-rich phases. Similarly, the influence of the heat treatment on the corrosion resistance depends on the produced distribution of precipitates. Magnesium and its alloys corrode quite rapidly in comparison with other metals, and there is pronounced hydrogen development. The latter increased with increasing NaCl concentration, although no great differences in the corrosion in both concentrations were observed, except on pure magnesium and ZEK100.

Keywords: Magnesium; Wrought Mg alloys; Corrosion; Electrochemistry; Mini cell system
Prof. Dr.-Ing. Claudia Fleck Fachgebiet Werkstofftechnik – Sekr. EB 13 Technische Universität Berlin Str. des 17. Juni 135, D-10623 Berlin, Germany Tel.: +49 30 314 23605 Fax: +49 30 314 26673

Dedicated to Professor Eckard Macherauch on the occasion of the 80th anniversary of his birth

  1. This work is part of a project funded in the Priority Programme 1168 “Extending the Range of Applications of Magnesium Alloys” by the Deutsche Forschungsgemeinschaft (DFG). The authors greatly acknowledge the financial support of the DFG. They further thank Dipl.-Ing. M. Bosse, Dr.-Ing. M. Schaper, and Prof. Dr.-Ing. F.-W. Bach of the Institut für Werkstoffe, Universität Hannover, for providing the materials.

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Received: 2006-05-12
Accepted: 2006-08-06
Published Online: 2022-01-21

© 2006 Carl Hanser Verlag, München

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Diffusion of 65Zn in the Mg17Al12 intermetallic compound and in the Mg-33.4 wt.% Al eutectic
  4. Thermodynamic modeling of the sodium alanates and the Na–Al–H system
  5. Thermodynamic assessment of the systems La2O3–Al2O3 and La2O3–Y2O3
  6. Re-evaluation of phase equilibria in the Al–Mo system
  7. EBSD and EDX analysis at the cladding–substrate interface of a laser clad railway wheel
  8. Thermodynamic properties of liquid silver–indium–antimony alloys determined from e.m.f. measurements
  9. Density and excess volumes of liquid copper, cobalt, iron and their binary and ternary alloys
  10. Thermodynamic investigation of Co–Cr alloys, III: Thermo-analytical measurements using DSC and DTA techniques
  11. Effect of a low frequency electromagnetic field on the direct-chill (DC) casting of AZ80 magnesium alloy ingots
  12. Microstructure of the “white layer” formed on nitrided Fe-7 wt.% Cr alloys
  13. The effect of ageing on tensile behaviour, mode I and mixed mode I/III fracture toughness of 7010 aluminium alloy
  14. Plane bending fatigue behavior of interstitial-free steel at room temperature
  15. Fracture behaviour of ultrafine-grained materials under static and cyclic loading
  16. Influence of process parameters on particle characteristics using a combined pressure-swirl-gas atomizer
  17. Processing and mechanical behaviour of a dual scale particle strengthened copper composite
  18. Electrochemical characterisation of magnesium and wrought magnesium alloys
  19. Progress in understanding the metallurgy of 18% nickel maraging steels
  20. Quality Management Basics on a High Level
  21. Personal
  22. News
  23. Frontmatter
  24. Editorial
  25. Editorial
  26. Basic
  27. Diffusion of 65Zn in the Mg17Al12 intermetallic compound and in the Mg-33.4 wt.% Al eutectic
  28. Thermodynamic modeling of the sodium alanates and the Na–Al–H system
  29. Thermodynamic assessment of the systems La2O3–Al2O3 and La2O3–Y2O3
  30. Re-evaluation of phase equilibria in the Al–Mo system
  31. EBSD and EDX analysis at the cladding–substrate interface of a laser clad railway wheel
  32. Thermodynamic properties of liquid silver–indium–antimony alloys determined from e.m.f. measurements
  33. Density and excess volumes of liquid copper, cobalt, iron and their binary and ternary alloys
  34. Thermodynamic investigation of Co–Cr alloys, III: Thermo-analytical measurements using DSC and DTA techniques
  35. Applied
  36. Effect of a low frequency electromagnetic field on the direct-chill (DC) casting of AZ80 magnesium alloy ingots
  37. Microstructure of the “white layer” formed on nitrided Fe-7 wt.% Cr alloys
  38. The effect of ageing on tensile behaviour, mode I and mixed mode I/III fracture toughness of 7010 aluminium alloy
  39. Plane bending fatigue behavior of interstitial-free steel at room temperature
  40. Fracture behaviour of ultrafine-grained materials under static and cyclic loading
  41. Influence of process parameters on particle characteristics using a combined pressure-swirl-gas atomizer
  42. Processing and mechanical behaviour of a dual scale particle strengthened copper composite
  43. Electrochemical characterisation of magnesium and wrought magnesium alloys
  44. History
  45. Progress in understanding the metallurgy of 18% nickel maraging steels
  46. Notifications
  47. Quality Management Basics on a High Level
  48. Personal
  49. News
https://doi.org/10.1515/ijmr-2006-0247
Keywords for this article
Magnesium; Wrought Mg alloys; Corrosion; Electrochemistry; Mini cell system

Articles in the same Issue

  1. Frontmatter
  2. Editorial
  3. Diffusion of 65Zn in the Mg17Al12 intermetallic compound and in the Mg-33.4 wt.% Al eutectic
  4. Thermodynamic modeling of the sodium alanates and the Na–Al–H system
  5. Thermodynamic assessment of the systems La2O3–Al2O3 and La2O3–Y2O3
  6. Re-evaluation of phase equilibria in the Al–Mo system
  7. EBSD and EDX analysis at the cladding–substrate interface of a laser clad railway wheel
  8. Thermodynamic properties of liquid silver–indium–antimony alloys determined from e.m.f. measurements
  9. Density and excess volumes of liquid copper, cobalt, iron and their binary and ternary alloys
  10. Thermodynamic investigation of Co–Cr alloys, III: Thermo-analytical measurements using DSC and DTA techniques
  11. Effect of a low frequency electromagnetic field on the direct-chill (DC) casting of AZ80 magnesium alloy ingots
  12. Microstructure of the “white layer” formed on nitrided Fe-7 wt.% Cr alloys
  13. The effect of ageing on tensile behaviour, mode I and mixed mode I/III fracture toughness of 7010 aluminium alloy
  14. Plane bending fatigue behavior of interstitial-free steel at room temperature
  15. Fracture behaviour of ultrafine-grained materials under static and cyclic loading
  16. Influence of process parameters on particle characteristics using a combined pressure-swirl-gas atomizer
  17. Processing and mechanical behaviour of a dual scale particle strengthened copper composite
  18. Electrochemical characterisation of magnesium and wrought magnesium alloys
  19. Progress in understanding the metallurgy of 18% nickel maraging steels
  20. Quality Management Basics on a High Level
  21. Personal
  22. News
  23. Frontmatter
  24. Editorial
  25. Editorial
  26. Basic
  27. Diffusion of 65Zn in the Mg17Al12 intermetallic compound and in the Mg-33.4 wt.% Al eutectic
  28. Thermodynamic modeling of the sodium alanates and the Na–Al–H system
  29. Thermodynamic assessment of the systems La2O3–Al2O3 and La2O3–Y2O3
  30. Re-evaluation of phase equilibria in the Al–Mo system
  31. EBSD and EDX analysis at the cladding–substrate interface of a laser clad railway wheel
  32. Thermodynamic properties of liquid silver–indium–antimony alloys determined from e.m.f. measurements
  33. Density and excess volumes of liquid copper, cobalt, iron and their binary and ternary alloys
  34. Thermodynamic investigation of Co–Cr alloys, III: Thermo-analytical measurements using DSC and DTA techniques
  35. Applied
  36. Effect of a low frequency electromagnetic field on the direct-chill (DC) casting of AZ80 magnesium alloy ingots
  37. Microstructure of the “white layer” formed on nitrided Fe-7 wt.% Cr alloys
  38. The effect of ageing on tensile behaviour, mode I and mixed mode I/III fracture toughness of 7010 aluminium alloy
  39. Plane bending fatigue behavior of interstitial-free steel at room temperature
  40. Fracture behaviour of ultrafine-grained materials under static and cyclic loading
  41. Influence of process parameters on particle characteristics using a combined pressure-swirl-gas atomizer
  42. Processing and mechanical behaviour of a dual scale particle strengthened copper composite
  43. Electrochemical characterisation of magnesium and wrought magnesium alloys
  44. History
  45. Progress in understanding the metallurgy of 18% nickel maraging steels
  46. Notifications
  47. Quality Management Basics on a High Level
  48. Personal
  49. News
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