Electrochemical Characterization of Magnesium Bioabsorbable Implants

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Journal Title, Volume, Page: 
9th IEEE International Symposium on Medical Measurements and Applications, IEEE MeMeA 2014, ISBN: 978-1-4799- 2920-7, DOI:10.1109/MeMeA.2014.6860053
Year of Publication: 
Sabrina Grassini, Emma Angelini, Marco Parvis, Simone Corbellini and Maen Ishtaiwi
Preferred Abstract (Original): 

The bone surgery often makes use of implants to sustain and fix the bones during the healing phase. Commonly used implants require a surgical procedure to be removed after bone healing, so there is a strong demand for a new typology of bio-absorbable implants. Magnesium and its alloys are promising materials for orthopedic self-degrading implants, mainly if they are protected by a thin coating. The design of Mg-based implants cannot disregard the adoption of a simple measurement procedure for assessing and monitoring the corrosion evolution in environments simulating the body fluids. This paper describes a measuring approach for the corrosion behavior assessment of different Mg-based alloys uncoated and coated with innovative surface treatments, based on Electrochemical Impedance Spectroscopy measurements.