Corrosion fatigue of magnesiumalloys for biodegradable implant applications

3^rd International Conference and Exhibition on Materials Science & Engineering

October 06-08, 2014 Hilton San Antonio Airport, USA

Sajjad Jafari, R K Singh Raman and C H J Davies

Posters: Material Sci Eng

Abstract :

Magnesium (Mg) alloys are very attractive as biodegradable temporary implants. It is essential for any implant to have adequate resistance to cracking/fracture in actual body environments. The most important mechanisms by which implants may fail are corrosion fatigue (CF) or/and stress corrosion cracking (SCC). This talk will present CF behaviour of two magnesium alloys, i.e., a common as-cast alloy AZ91D, and a wrought Mg-Zn-Ca Mg alloy in modified simulated body fluid (m-SBF) at 37˚C. Both alloys were found to be susceptible to CF in m-SBF. However, the Mg-Zn-Ca alloy has shown a superior resistance to CF as compared to that of as-cast AZ91D and could be considered as a potential candidate for biodegradable implant applications.