Brown S A, Merritt K
J Biomed Mater Res. 1981 Jul;15(4):479-88. doi: 10.1002/jbm.820150404.
Fretting corrosion of stainless-steel round hole plates and spherical head screws was studied using a simulator that produced a rocking motion of the heads in the plate holes. Experiments were run for 7 days, with the simulator producing 1 oscillation/s for 16 h/day. Fretting corrosion was studied in 0.9% NaCl and in a 10% solution of fetal calf serum in saline. The results showed a tenfold decrease in fretting corrosion when the serum was added to the saline. Measurements of the weight of the two screws and two-hole plate showed those in saline lost 2.9 mg as compared to 0.3 for those in 10% serum. The concentration of nickel in the saline solutions was 12.4 micrograms/mL compared with 0.85 in serum. Visual examination of the solutions and implants revealed that those in saline had a significant amount of corrosion products while those tested in 10% serum were bright and shiny. Recordings of electrical potentials demonstrated that the addition of serum to saline significantly reduced the change in potential from rest to fretting condition.
使用一种能使头部在板孔中产生摇摆运动的模拟器，对不锈钢圆孔板和球形头螺钉的微动腐蚀进行了研究。实验持续7天，模拟器每天以1次振荡/秒的频率运行16小时。在0.9%氯化钠溶液和10%胎牛血清生理盐水溶液中研究微动腐蚀。结果表明，向盐水中添加血清后，微动腐蚀降低了10倍。对两颗螺钉和两孔板的重量测量显示，盐水中的样品失重2.9毫克，而在10%血清中的样品失重0.3毫克。盐溶液中镍的浓度为12.4微克/毫升，而血清中为0.85微克/毫升。对溶液和植入物的目视检查表明，盐水中的样品有大量腐蚀产物，而在10%血清中测试的样品则明亮有光泽。电位记录表明，向盐水中添加血清显著降低了从静止状态到微动状态的电位变化。
