Journal of Electroanalytical Chemistry ( IF 4.1 ) Pub Date : 2021-08-16 , DOI: 10.1016/j.jelechem.2021.115599 Yiqi Zhou 1 , Dirk Lars Engelberg 1, 2
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A bipolar electrochemistry approach has been applied to characterise pit nucleation and growth kinetics in 13% Cr ferritic stainless steel. In-situ time-lapse imaging, supported by laser confocal microscopy measurements, were applied to obtain pit nucleation frequencies and associated pit growth characteristics. The development of champion pits is observed, and the effect of pit shape and aspect ratio on pit nucleation and growth are discussed. Pits preferentially nucleated and grew with depth to width aspect ratios of 0.4–0.6. The observed pit growth kinetics are independent of pit volume and the acting potentials.
中文翻译：
双极电化学控制下铁素体不锈钢点蚀的延时观察
已应用双极电化学方法来表征 13% Cr 铁素体不锈钢的凹坑形核和生长动力学。在激光共聚焦显微镜测量的支持下，原位延时成像用于获得凹坑成核频率和相关的凹坑生长特征。观察了冠军坑的发展，讨论了坑形状和纵横比对坑成核和生长的影响。凹坑优先成核和生长，深宽比为 0.4-0.6。观察到的凹坑生长动力学与凹坑体积和作用电位无关。
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