Degradation behaviour of AZ80E magnesium alloy exposed to phosphate buffer saline medium
F. El-Taib Heakal; O.S. Shehata; Noura Saad tantawy;
Abstract
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.
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.
Other data
| Title | Degradation behaviour of AZ80E magnesium alloy exposed to phosphate buffer saline medium | Authors | F. El-Taib Heakal; O.S. Shehata; Noura Saad tantawy | Keywords | Alloy;SEM;EIS;Passivity;Hydrogen overvoltage;Magnesium | Issue Date | 11-Jun-2014 | Publisher | Elsevier Ltd. | Volume | 86 | Start page | 285 | End page | 294 |
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