ELECTROCHEMICAL STUDIES ON THE INFLUENCE OF PROTEINS ON THE CORROSION OF IMPLANT ALLOYS
ELECTROCHEMICAL STUDIES ON THE INFLUENCE OF PROTEINS ON THE CORROSION OF IMPLANT ALLOYS
复制标题
DOI：
10.1016/0142-9612(88)90119-6
复制
发表时间：
1988-03-01
期刊：
影响因子：
14
通讯作者：
MERRITT, K
中科院分区：
文献类型：
--
作者：
WILLIAMS, RL;BROWN, SA;MERRITT, K
研究了蛋白质对316L不锈钢、工业纯钛和钛6-铝4-钒在静态和微动模式下腐蚀速率的影响。根据ASTM F-746，使用圆柱形样本和静态骨折固定板研究静态模式。根据ASTM F-897，使用双孔接骨板微动磨损机研究微动磨损模式，该微动磨损机在接骨板和螺钉之间引起循环摇摆运动。采用极化电阻法和塔菲尔斜率法研究了蛋白质对阳极和阴极腐蚀反应的影响。发现蛋白质增加了不锈钢和C. P.钛圆柱形试样的腐蚀速率，但对Ti-6Al-4V圆柱形试样没有影响。在微动模式下，蛋白质降低了不锈钢板的腐蚀速率，但对钛合金没有明显的影响。蛋白质的存在下出现的不锈钢试样的阳极塔菲尔常数的增加和阴极塔菲尔常数的减少。阴极塔菲尔斜率的形状的显着差异，也被认为是与不同的表面条件的气缸，静态与微动板。
The effect of proteins on corrosion rates of 316L stainless steel, commercially pure titanium and titanium 6-aluminium 4-vanadium was studied in the static and fretting modes. The static mode was studied using cylindrical specimens as per ASTM F-746, and static fracture fixation plates. The fretting mode was studied using a two-hole plate fretting machine which caused a cyclic rocking motion between the plate and the screws, as per ASTM F-897. Electrochemical techniques of polarization resistance and Tafel slope measurements were used to study effects of proteins on the anodic and cathodic corrosion reactions. It was found that proteins increased the corrosion rate of the stainless steel and C.P. titanium cylindrical specimens, but did not have an effect on the Ti-6AI-4V cylinders. In the fretting mode proteins decreased the corrosion rate of the stainless steel plates, but did not have an appreciable effect on either of the titanium alloys. The presence of proteins appeared to cause an increase in the anodic Tafel constant and a decrease in the cathodic Tafel constant of stainless steel specimens. Significant differences in the shapes of the cathodic Tafel slopes were also seen with cylinders with different surface conditions, and static versus fretting plates.