Rapid degradation of biomedical magnesium induced by zinc ion implantation
Rapid degradation of biomedical magnesium induced by zinc ion implantation
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DOI：
10.1016/j.matlet.2010.11.059
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发表时间：
2011-02
影响因子：
3
通讯作者：
Guosong Wu;L. Gong;K. Feng;Shuilin Wu;Ying Zhao;P. Chu
中科院分区：
文献类型：
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作者：
Guosong Wu;L. Gong;K. Feng;Shuilin Wu;Ying Zhao;P. Chu
降解速率对可生物降解镁材料的性能有重要影响。在本研究中，使用阴极电弧源在35kV的加速电压下将Zn注入到纯镁中。标称离子注入通量为2.5×1017ions cm−2。锌离子注入后，在模拟体液中的降解速率显著增加。据推测，因为Zn以金属状态存在于注入层中，所以富Zn表面区域和镁基质之间的原电池效应引起所观察到的加速降解。
The degradation rate is important to biodegradable magnesium materials. In this study, Zn is implanted using a cathodic arc source into pure magnesium at an accelerating voltage of 35kV. The nominal ion implant fluence is 2.5×1017ions cm−2. After Zn implantation, the degradation rate in simulated body fluids is increased significantly. It is postulated that because Zn exists in the metallic state in the implanted layer, the galvanic effect between the Zn rich surface region and magnesium matrix induces the observed accelerated degradation.