<研究論文>チタンおよびチタン合金の溶存酸素還元におよぼす蛋白質の影響 : 第 5 報血清被覆電極

概要

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To investigate the effects of serum proteins on the corrosion of titanium and its alloy (Ti-6Al-4V), widely used for orthopaedic and dental implants, the reduction behavior of dissolved oxygen at serum-coated electrodes was studied by potentiostatic voltammetry. The polarization curves for cathodic scans of coated electrodes were shifted towards more negative potential ranges than those of uncoated electrodes. When the anodic scans were conducted after holding the potential at -1.5V (SCE), however, the polarization curves of coated electrodes were closer to those for anodic scans of uncoated electrodes than to those for cathodic scans of coated electrodes. Similar results were obtained for both cathodic and anodic scans in the potential range for reduction of oxygen when scans were conducted after anodic scans from resting potential to +0.5V (SCE) and further holding the potential at +0.5V (SCE). These results indicated that serum proteins, adsorbed on electrodes and suppressing the reduction of oxygen, were partly desorbed by holding the potential at -1.5V (SCE), and also that holding the potential at 0.5V (SCE) did not affect the reduction behavior of dissolved oxygen.
日本大学の論文
2000-12-25