Sutow E J
J Biomed Mater Res. 1980 Sep;14(5):587-95. doi: 10.1002/jbm.820140505.
A study was conducted which examined the influence of electropolishing on the corrosion resistance of a cold rolled 316L stainless steel. Test specimens were surface prepared to a final mechanical finish of wetted 600 grit SiC paper, prior to electropolishing. An o-H3PO4/Glycerol/H2O electropolishing solution was employed for times of 15, 20, and 25 min. Control specimens were surface prepared only to the final mechanical finish. Anodic polarization tests were performed in a deaerated Ringer's solution (37 degrees C) which was acidified to pH 1, with HCl. The electropolished specimens demonstrated increased corrosion resistance, when compared to the control specimens. This was evidenced for the former by more anodic corrosion and breakdown potentials, and the absence of a dissolution peak which was observed for the control specimens at the initial polarization potentials. Surface hardness measurements indicated that this increase in corrosion resistance was produced, in part, by the removal of the cold worked surface layer produced by the mechanical finish. In terms of increasing corrosion resistance, no optimum electropolishing time was found within the 15-25 min treatment period.
开展了一项研究，考察了电解抛光对冷轧316L不锈钢耐腐蚀性的影响。在进行电解抛光之前，将试样表面加工至最终的机械光洁度，即湿磨600目碳化硅砂纸的光洁度。采用o-H3PO4/甘油/H2O电解抛光溶液，处理时间分别为15、20和25分钟。对照试样仅进行最终的机械表面处理。在通氮气除氧的林格氏溶液（37摄氏度）中进行阳极极化试验，该溶液用盐酸酸化至pH值为1。与对照试样相比，经电解抛光的试样耐腐蚀性增强。对于前者，更多的阳极腐蚀和击穿电位以及在初始极化电位下对照试样出现的溶解峰的消失证明了这一点。表面硬度测量表明，耐腐蚀性的提高部分是由于去除了机械加工产生的冷加工表面层。就提高耐腐蚀性而言，在15-25分钟的处理时间内未发现最佳的电解抛光时间。
