Corrosion behavior of commercially pure Mg and ZM21 Mg alloy in Ringer’s solution – Long term evaluation by EIS |
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Authors: | M Jamesh Satendra Kumar TSN Sankara Narayanan |
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Affiliation: | National Metallurgical Laboratory, Madras Centre CSIR Complex, Taramani, Chennai 600 113, India |
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Abstract: | Evaluation of the corrosion behavior of commercially pure magnesium (CP-Mg) and ZM21 Mg alloy immersed in Ringer’s solution for 92 h by electrochemical impedance spectroscopy (EIS) is addressed. The formation of a compact layer of well-developed rod-like aragonitic CaCO3 crystals and its subsequent thickening with increase in immersion time offers a higher corrosion protective ability for ZM21 Mg alloy. The formation of a mud-crack pattern and a large number of clusters of needle-like crystals offers a relatively lower corrosion resistance for CP-Mg. The study suggests that ZM21 Mg alloy is a promising candidate material for the development of degradable implants. |
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Keywords: | A Alloy A Magnesium B EIS B IR spectroscopy C Anodic dissolution |
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