Bundy K J, Dillard J, Luedemann R
Biomedical Engineering Department, Tulane University, New Orleans, LA 70118.
Biomaterials. 1993 Jun;14(7):529-36. doi: 10.1016/0142-9612(93)90242-t.
The a.c. impedance method is a very useful technique for studying the corrosion behaviour of surgical implant alloys. In this article information is presented on how to efficiently and reliably acquire and analyse experimental data through the use of Nyquist, Bode and Rre versus omega Rim plots. Also, experiments were conducted in which 316L stainless steel specimens were subjected to polarization conditions which caused pitting corrosion. The increased surface area caused by the pitting, inferred from a.c. impedance measurements of specimen capacitance, was found to be well correlated with ASTM standard methods for assessment of pitting.
交流阻抗法是研究外科植入合金腐蚀行为的一种非常有用的技术。本文介绍了如何通过使用奈奎斯特图、伯德图和Rre与ωRim图来高效且可靠地获取和分析实验数据。此外，还进行了实验，其中对316L不锈钢试样施加导致点蚀的极化条件。从试样电容的交流阻抗测量推断出的由点蚀引起的表面积增加，被发现与美国材料与试验协会（ASTM）评估点蚀的标准方法有很好的相关性。
