Degradation behaviour of AZ80E magnesium alloy exposed to phosphate buffer saline medium

作者：Heakal F El Taib^*; Shehata O S; Tantawy N S

来源：Corrosion Science, 2014, 86: 285-294.

DOI：10.1016/j.corsci.2014.06.008

• Alloy
• Magnesium
• EIS
• SEM
• Hydrogen overvoltage
• Passivity

Corrosion behaviour of AZ80E alloy in comparison with pure Mg was investigated in phosphate buffer saline (PBS) solution in order to assess its bioactivity. Open circuit potential and EIS results reveal that both samples exhibit self-passivation with time. The higher corrosion resistance of the alloy is discussed from the perspective of its microstructure. Anodic oxidation for the alloy surface in borate buffer solution was also attempted potentiostatically to modify its corrosion behaviour. Anodised specimen at controlled potential of 1.0 V(SCE) can improve the durability of the alloy in PBS medium. The results were further confirmed by SEM and EDX analyses.

• 出版日期2014-9