对固溶态Mg-Nd-Sr-Zr合金进行了钆(Gd)离子注入改性处理;采用SRIM 2008软件对Gd离子注入过程进行了模拟分析;采用光学显微镜(OM)观察了镁合金的显微组织,并利用X射线衍射仪(XRD)分析改性层中的物相组成,同时结合X射线光电子能谱(XPS)表征改性层中化学成分与元素价态,采用电化学实验及析氢实验评价了基体镁合金与注入镁合金在模拟体液(SBF)中的生物腐蚀行为.结果表明:Gd离子注入有助于提高固溶态Mg-Nd-Sr-Zr合金在SBF中耐生物腐蚀性能,且当注入剂量为2.5×1016 cm-2时,注入镁合金的耐生物腐蚀性能最佳.
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