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Electrochemical behavior of a novel nano-composite coat on Ti alloy in phosphate buffer solution for biomedical applications

机译:一种新型纳米复合涂层对生物医学应用磷酸盐缓冲溶液Ti合金的电化学行为

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摘要

A novel nano-composite film coat of organic/inorganic composition including chitosan (CS), TiO2 nanoparticles (TO) and hydroxyapatite (HA) nanoparticles, was synthesized on a Ti-6Al-4V alloy surface. Open-circuit potential (OCP), electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements were used to observe the corrosion behavior of the novel synthesized nanocomposite coat on titanium alloy surface in a phosphate buffer solution. The results were confirmed by scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis techniques. The antibacterial activity for the novel nano-coat was determined and compared with the bare Ti alloy. Electrochemical impedance spectroscopy measurements showed that the total corrosion resistance of this newly synthesized nano-coat gave the highest corrosion resistance compared to the separate CS, TO and/or HA coatings. Also, this novel nano-coat showed high antibacterial activity compared with the bare alloy. The excellent biocompatibility of this novel nano-coat may be due to its organic/inorganic composition.
机译:在Ti-6Al-4V合金表面上合成了一种新的纳米复合薄膜的有机/无机组合物,包括壳聚糖(Cs),TiO 2纳米颗粒(至)和羟基磷灰石(HA)纳米颗粒。开路电位(OCP),电化学阻抗光谱(EIS)和电位动力学偏振测量用于观察磷酸盐缓冲溶液中新型合成纳米复合材料涂层在磷酸盐缓冲溶液中的钛合金表面上的腐蚀行为。通过扫描电子显微镜(SEM)和能量分散X射线(EDX)分析技术来确认结果。测定新型纳米涂层的抗菌活性并与裸钛合金进行比较。电化学阻抗光谱测量结果表明,与单独的Cs,与/或Ha涂层相比,该新合成纳米涂层的总耐腐蚀性得到了最高的耐腐蚀性。而且,与裸合金相比,这种新型纳米涂层显示出高抗菌活性。这种新型纳米涂层的优异生物相容性可以是由于其有机/无机组合物。

著录项

  • 来源
    《RSC Advances》 |2016年第24期|共10页
  • 作者

    Fekry Amany M.;

  • 作者单位

    Cairo Univ Fac Sci Dept Chem Giza 12613 Egypt;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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