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Galvanic Corrosion of Brass /steel 907A Couple in Artificial Seawater

机译:黄铜/钢907A夫妇在人工海水中的电腐蚀

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Galvanic corrosion of brass /steel 907A couples with various cathode /anode area ratios wereexamined by electrochemical impedance spectroscopy and electrochemical noise technique.Experimental results show that the galvanic corrosion of couples accelerate within the initial 24h, andthen decrease in the later time (from 26h to 720h). The products nucleation, growth, film formationstages are characterized using energy distribution plots (EDP) and two parameters (n1 and n2) areadopted to differentiate the nucleation and growth processes. According to the variation tendency of n1and n2, galvanic corrosion process are divided into fluctuating stage and stabilization stage. As thecathode /anode area ratios increase, the corrosion rates of brass /steel 907A couples increase and theperiod of fluctuating stage lengthens.
机译:通过电化学阻抗谱和电化学噪声技术研究了具有不同阴极/阳极面积比的黄铜/钢907A偶的电偶腐蚀实验结果表明,偶偶的电偶腐蚀在最初的24h内加速,然后在随后的24h内逐渐减小720h)。产品的成核,生长,成膜阶段使用能量分布图(EDP)和两个参数(n1和n2)来区分成核和生长过程。根据n1和n2的变化趋势,将电腐蚀过程分为波动阶段和稳定阶段。随着阴极/阳极面积比的增加,黄铜/钢907A偶对的腐蚀速率增加,并且平台的波动周期延长。

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