Brooks Emily K, Ehrensberger Mark T
Department of Biomedical Engineering, University at Buffalo, Buffalo, NY 14214, USA.
Department of Orthopaedics, University at Buffalo, Buffalo, NY 14214, USA.
J Funct Biomater. 2017 Sep 1;8(3):38. doi: 10.3390/jfb8030038.
Three Mg alloys, Mg-1.34% Ca-3% Zn (MCZ), Mg-1.34% Ca-3% Zn-0.2% Sr (MCZS), and Mg-2% Sr (MS), were examined to understand their bio-corrosion behavior. Electrochemical impedance spectroscopy and polarization scans were performed after 6 days of immersion in cell culture medium, and ion release and changes in media pH were tracked over a 28 day time period. Scanning electron microscopy (SEM) of alloy microstructure was performed to help interpret the results of the electrochemical testing. Results indicate that corrosion resistance of the alloys is as follows: MCZ > MCZS > MS.
研究了三种镁合金，即Mg-1.34%Ca-3%Zn（MCZ）、Mg-1.34%Ca-3%Zn-0.2%Sr（MCZS）和Mg-2%Sr（MS），以了解它们的生物腐蚀行为。将样品浸泡在细胞培养基中6天后进行电化学阻抗谱和极化扫描，并在28天的时间段内跟踪离子释放和培养基pH值的变化。对合金微观结构进行扫描电子显微镜（SEM）分析，以辅助解释电化学测试结果。结果表明，合金的耐腐蚀性顺序如下：MCZ > MCZS > MS。
