Magnesium Corrosion in Different Solutions

Nor Ishida Zainal Abidin; Darren Martin; Andrej Atrens

doi:10.4028/www.scientific.net/MSF.690.369

Paper Titles

Effect of Al-Ti-B Based Master Alloys on Grain Refinement and Hot Tearing Susceptibility of AZ91E Magnesium Alloy
p.351

Hot Tearing in Cast Aluminum Alloys
p.355

Stress Corrosion Cracking of a New Rare- Earth Containing Magnesium Alloy, Elektron21 Compared with AZ91E
p.361

An Innovative Specimen for Mg Corrosion Studies
p.365

Magnesium Corrosion in Different Solutions
p.369

Environmentally Assisted Cracking of Magnesium Alloys
p.373

Electro- and Electroless Deposition of Ni/SiC and Co/SiC Composite Coatings on Aluminum
p.377

Influence of Cerium on the Formation of Micro-Galvanic Corrosion Elements of AZ91
p.381

Electrochemical Corrosion Behaviour of ZE41 and QE22 Magnesium Alloys
p.385

HomeMaterials Science ForumMaterials Science Forum Vol. 690Magnesium Corrosion in Different Solutions

Magnesium Corrosion in Different Solutions

Abstract:

The corrosion mechanism of Mg alloys in Hank’s solution was elucidated by comparing the corrosion of typical Mg alloys (AZ91, ZE41 and Mg2Zn0.2Mn) and high purity Mg in Hank’s solution at room temperature and in 3% NaCl saturated with Mg(OH)₂. Corrosion was characterised by the evolved hydrogen and the surfaces after the immersion tests. Corrosion in Hank’s solution was weakly influenced by microstructure in contrast to corrosion in the 3% NaCl solution, where second phases cause strong micro-galvanic acceleration. This is attributed to the formation of a more protective surface film in Hank’s solution, causing extra resistance between the alpha-Mg matrix and the second phase. The incubation period in Hank’s solution was alloy dependent.

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Materials Science Forum (Volume 690)

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369-372

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https://doi.org/10.4028/www.scientific.net/MSF.690.369

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June 2011

Authors:

Nor Ishida Zainal Abidin, Darren Martin, Andrej Atrens

Keywords:

Magnesium, SEM

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