【摘要】 通过AZ31镁合金在人工血浆中的浸泡实验和动/静态降解析氢实验,研究了AZ31镁合金的动态降解行为。人工血浆溶液的循环更新对镁合金的降解具有一定的影响,溶液的更新可以保持其pH值的稳定,促进镁合金的降解;在动/静态降解析氢实验中,对镁合金表面降解形貌的扫描电镜(SEM)观测表明,镁合金在动态实验中除了点腐蚀行为外,还存在冲刷腐蚀。由析氢速率对比结果显示,镁合金在人工血浆中动态实验比静态实验的降解速率更快。更多还原

【Abstract】 The dynamic degradation behavior of AZ31 magnesium alloy as biomedical materials was studied through the immersion experiment in artificial plasma. The update of artificial plasma solution has some influences on the degradation of magnesium alloy, for the solution is updated to keep its pH value stable and promote the magnesium alloy degradation behavior. In the static and dynamic degradation hydrogen evolution experiments, characteristics of magnesium alloy’s surface morphology were observed by scanning electron microscopy(SEM). The results show that besides pitting corrosion there are erosion-corrosion for the magnesium alloy in the dynamic experiment. The magnesium alloy’s dynamic degradation rate is faster than its static degradation rate.更多还原