Development mechanism of internal local corrosion of X80 pipeline steel
Zhuowei Tana, Liuyang Yangb, Dalei Zhangb,*(), Zhenbo Wanga,*(), Frank Chengc, Mingyang Zhangd, Youhai Jina

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Fig. 4.. Configuration of the electrodes: 1) epoxy resin, 2) counter electrode, 3) reference electrode, and 4) working electrode (units are in mm).