Low hydrogen release behavior and antibacterial property of Mg-4Zn-xSn alloys
Weiyan Jianga Jingfeng Wanga Qingshan Liua Weikang Zhaob Dianming Jiangb Shengfeng Guoc
a National Engineering Research Center for Magnesium Alloys, College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
b Department of orthopedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
c Faculty of Materials and Energy, Southwest University, Chongqing 400715, China
Abstract
Hydrogen release behavior and antibacterial property of Mg-4Zn-xSn alloys (x= 0, 1.0, 1.5 wt. %) were investigated by immersion tests, colony counting method and antibacterial adhesion, respectively. Results show that Sn-contained Mg-4Zn alloys have lower hydrogen release and better antibacterial property to Staphylococcus aureus (S. aureus) than that of Mg-4Zn alloy, for Sn incorporated in the surface film. Zn2+ and Sn2+/Sn4+ ions degraded from the alloys are the main cause for the high antibacterial effect. It provides an effective way to design materials to solve current shortcomings of biodegradable Mg alloys.
https://www.sciencedirect.com/science/article/abs/pii/S0167577X19300801
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