In Vitro Degradation of Pure Magnesium-The Effects of Glucose and/or Amino Acid.

In Vitro Degradation of Pure Magnesium-The Effects of Glucose and/or Amino Acid.
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纯镁的体外降解——葡萄糖和/或氨基酸的影响

DOI:
10.3390/ma10070725
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发表时间:
2017-06-29
期刊:
Materials (Basel, Switzerland)
影响因子:
--
通讯作者:
Han EH
Han EH
中科院分区:
其他
文献类型:
--
作者:
Wang Y;Cui LY;Zeng RC;Li SQ;Zou YH;Han EH

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采用SEM、XRD、FTIR、XPS、极化和电化学阻抗谱以及浸泡实验等方法研究了葡萄糖和氨基酸(L-半胱氨酸)对纯镁降解的影响。结果表明,氨基酸和葡萄糖对纯镁在盐水溶液中的腐蚀均有抑制作用,而氨基酸和葡萄糖的同时存在则加速了纯镁的腐蚀速率。这可能是由于氨基酸和葡萄糖之间形成了-C=N-键(Schiff碱的官能团),限制了保护性Mg(OH)2沉淀的形成。
The influences of glucose and amino acid (L-cysteine) on the degradation of pure magnesium have been investigated using SEM, XRD, Fourier transformed infrared (FTIR), X-ray photoelectron spectroscopy (XPS), polarization and electrochemical impedance spectroscopy and immersion tests. The results demonstrate that both amino acid and glucose inhibit the corrosion of pure magnesium in saline solution, whereas the presence of both amino acid and glucose accelerates the corrosion rate of pure magnesium. This may be due to the formation of -C=N- bonding (a functional group of Schiff bases) between amino acid and glucose, which restricts the formation of the protective Mg(OH)2 precipitates.
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