Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Science, Qingdao 266071, China; Laoshan Laboratory, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academic of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Marine Environmental Corrosion and Biofouling, Institute of Oceanology, Chinese Academy of Science, Qingdao 266071, China; Laoshan Laboratory, Qingdao 266237, China; Center for Ocean Mega-Science, Chinese Academic of Sciences, Qingdao 266071, China.
Bioelectrochemistry. 2024 Aug;158:108703. doi: 10.1016/j.bioelechem.2024.108703. Epub 2024 Apr 4.
The fluctuating water-line corrosion of EH40 steel in sterile and biotic media was investigated with a wire beam electrode. When the coupons were partially immersed in the sterile medium, the position of the low water-line acted as the cathodic zone and the area below the low water-line constantly served as the main anodic zone. The thin electrolyte layers with uneven thickness promoted the galvanic current of the region below the low water-line. Different from the sterile environment, the metabolism of Halomonas titanica with oxygen as the final electron acceptor reduced the dissolved oxygen concentration, which resulted in the position of the low water-line acting as the anodic zone.
采用钢丝束电极研究了 EH40 钢在无菌和生物介质中的波动水线腐蚀。当试样部分浸入无菌介质中时，低水线位置充当阴极区，而低水线以下的区域则不断充当主要阳极区。薄的电解质层厚度不均匀，促进了低水线以下区域的电流。与无菌环境不同，以氧作为最终电子受体的嗜盐菌的新陈代谢降低了溶解氧浓度，导致低水线位置充当阳极区。
