In Vitro Evaluation of Degradation of Biodegradable Silane Based Coating on Mg-Zn-Ca Alloy in a Physiological Environment

Abstract:

In the present study, combinations of a phosphonato silane with a precursor, Methyltriethoxy silane (MTEOS) in various ratios were applied onto the alloy Mg-6Zn-Ca. The corrosion resistance of the coated and uncoated specimens in a modified simulated body fluid (m-SBF) was characterized by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results suggest that the silane coating significantly decreases the degradation rate of the magnesium alloy, indicating its potential to be used as a corrosion barrier for magnesium alloy temporary implants.

• Periodical: Materials Science Forum (Volume 765)
• Pages: 803-807
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.765.803
• Online since: July 2013
• Authors: Gaur Swati, Anand Sawroop Khanna, Raghuvir Kumar Singh Raman
• Keywords: Biodegradable, Electrochemical Impedance Spectroscopy (EIS), Magnesium Alloy, Phosphonato Silane, Potentiodynamic Polarization

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