Journalpaper

The stress corrosion cracking behaviour of biomedical Mg-1Zn alloy in synthetic or natural biological media

Abstract

In the present study, the effects of degradation environment on the in vitro stress corrosion cracking (SCC) behaviour of biomedical Mg-1Zn alloy were investigated. The resistance to SCC’s initiation and propagation for Mg-1Zn alloy in synthetic cell culture medium and natural bovine calf serum (BCS) were improved compared to phosphate-buffered saline (PBS) and modified simulated body fluid (m-SBF), due to the homogenous corrosion and spontaneous adsorption of organic components. The elongation to failure obtained in BCS was reduced by around 30 % compared with that of the sample tested in air, indicating still a good ductility for Mg alloy.
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