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首页> 美国卫生研究院文献>Materials >Effect of Glucose Concentration on Electrochemical Corrosion Behavior of Pure Titanium TA2 in Hanks’ Simulated Body Fluid
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Effect of Glucose Concentration on Electrochemical Corrosion Behavior of Pure Titanium TA2 in Hanks’ Simulated Body Fluid

机译：葡萄糖浓度对汉克斯模拟体液中纯钛TA2电化学腐蚀行为的影响

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Titanium and its alloys have been widely used as implant materials due to their excellent mechanical property and biocompatibility. In the present study, the effect of glucose concentration on corrosion behavior of pure titanium TA2 in Hanks’ simulated body fluid is investigated by the electrochemical impedance spectrum (EIS) and potentiodynamic polarization methods. The range of glucose concentrations investigated in this research includes 5 mmol/L (limosis for healthy people), 7 mmol/L (after diet for healthy people), 10 mmol/L (limosis for hyperglycemia patient), and 12 mmol/L (after diet for hyperglycemia patient), as well as, 15 mmol/L and 20 mmol/L, which represent different body fluid environments. The results indicate that the pure titanium TA2 demonstrates the best corrosion resistance when the glucose concentration is less than 10 mmol/L, which shows that the pure titanium TA2 as implant material can play an effective role in the body fluids with normal and slight high glucose concentrations. Comparatively, the corrosion for the pure titanium implant is more probable when the glucose concentration is over 10 mmol/L due to the premature penetration through passive film on the material surface. Corrosion defects of pitting and crevice exist on the corroded surface, and the depth of corrosion is limited to three microns with a low corrosion rate. The oxidation film on the surface of pure titanium TA2 has a protective effect on the corrosion behavior of the implant inner material. The corrosion behavior of pure titanium TA2 will happen easily once the passive film has been penetrated through. The corrosion rate for TA2 implant will accelerate quickly and a pure titanium implant cannot be used.
机译：钛及其合金由于其优异的机械性能和生物相容性而被广泛用作植入材料。在本研究中，通过电化学阻抗谱（EIS）和电势极化方法研究了葡萄糖浓度对汉克斯模拟体液中纯钛TA2腐蚀行为的影响。本研究中研究的葡萄糖浓度范围包括5 mmol / L（健康人的lim行），7 mmol / L（健康人的饮食后），10 mmol / L（高血糖症患者的lim行）和12 mmol / L（高血糖患者饮食后），以及代表不同体液环境的15 mmol / L和20 mmol / L。结果表明，当葡萄糖浓度低于10 mmol / L时，纯钛TA2表现出最佳的耐腐蚀性，这表明纯钛TA2作为植入物材料可在葡萄糖正常和轻度高的体液中发挥有效作用。浓度。相比之下，当葡萄糖浓度超过10 mmol / L时，由于过早穿透材料表面的钝化膜，纯钛植入物的腐蚀可能性更高。在腐蚀表面上存在点蚀和缝隙腐蚀缺陷，腐蚀深度被限制在三微米以内，腐蚀速率较低。纯钛TA2表面的氧化膜对植入物内部材料的腐蚀行为具有保护作用。一旦钝化膜被穿透，纯钛TA2的腐蚀行为将很容易发生。 TA2植入物的腐蚀速率将迅速加快，因此不能使用纯钛植入物。

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