白蛋白作用下纯镁的腐蚀行为

Research on Corrosion Behavior of Pure Magnesium in Protein Environment

在模拟体液中添加牛血清白蛋白,建立生物生理环境,利用浸泡实验、电化学腐蚀实验测量纯镁的腐蚀降解行为。结果表明,白蛋白的加入抑制了纯镁在模拟体液中的腐蚀速率,并改变其阴、阳极反应过程,而且白蛋白浓度的增大会增强其抑制作用,但白蛋白的存在不会明显改变纯镁在模拟体液中的初期腐蚀类型,仍然以点蚀为主。

This paper investigates the pure magnesium corrosion degradation behavior in SBF consisting of albumin. Immersion test and electrochemical corrosion tests are conducted. The results show that the corrosion rate of pure magnesium is inhibited because of the existence of albumin and the anodic and cathodic reactions are also influenced. With the increase of the concentration of albumin, the inhibiting effect increases. However, albumin can not change the initial corrosion type of pure magnesium in SBF, which is attacked mainly by pitting corrosion.