Bundy K J, Vogelbaum M A, Desai V H
J Biomed Mater Res. 1986 Apr;20(4):493-505. doi: 10.1002/jbm.820200406.
The decrease in corrosion resistance of 316L stainless steel due to static stress was studied in vitro using a 37 degree C Ringer's solution electrolyte. Both potentiodynamic polarization and coulometric techniques were used. Cyclic anodic polarization tests with highly loaded fracture mechanics samples revealed a lowering of breakdown potential and disruption of passive films compared to unstressed controls. Measurements of the time-averaged current density due to a 100 mV anodic overpotential showed that a stress level causing plastic deformation increases the current density by more than an order of magnitude compared to samples stressed to the yield stress or nonloaded controls. The significance of these findings for surgical implant devices in service is discussed.
在体外使用37摄氏度的林格氏溶液电解质研究了静态应力导致的316L不锈钢耐腐蚀性降低的情况。采用了动电位极化和库仑法技术。对高负荷断裂力学样品进行的循环阳极极化测试表明，与无应力对照相比，击穿电位降低，钝化膜遭到破坏。对因100 mV阳极过电位产生的时间平均电流密度的测量表明，与屈服应力下的样品或无负荷对照相比，导致塑性变形的应力水平使电流密度增加了一个多数量级。讨论了这些发现对外科植入器械实际应用的意义。
