Effect of anodic polarization treatment on microbiologically influenced corrosion resistance of Cu-bearing stainless steel against marine Pseudomonas aeruginosa
Effect of anodic polarization treatment on microbiologically influenced corrosion resistance of Cu-bearing stainless steel against marine Pseudomonas aeruginosa
复制标题
阳极极化处理对含铜不锈钢微生物影响的海洋铜绿假单胞菌耐腐蚀性能的影响
DOI：
10.1016/j.corsci.2022.110592
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发表时间：
2022
影响因子：
8.3
通讯作者：
Ke Yang
中科院分区：
文献类型：
--
作者：
Jin-long Zhao;Da Sun;Mohammed Arroussi;Tong-Yu Lian;Xin-Rui Zhang;Chun-Guang Yang;Ke Yang
采用电化学测试和形貌观察技术，研究了316 L-Cu不锈钢（SS）在海洋铜绿假单胞菌（Pseudomonasaeruginosa）作用下阳极极化处理后的微生物腐蚀行为。结果表明，与常规316 L SS和生物介质中培养的316 LCu SS相比，阳极极化处理使316 LCu SS的腐蚀电流降低，点蚀电位升高。表面形貌观察结合XPS分析发现，316 L-Cu SS有效地抑制了细菌繁殖，并促进了致密的保护性胞外聚合物（EPS）-Fe膜的形成，导致比316 L SS更小的点蚀敏感性。
Anodic polarization treatment was used to investigate microbiologically influenced corrosion (MIC) behavior of 316 L-Cu stainless steel (SS) against marine Pseudomonas aeruginosa using electrochemical tests and morphology observation techniques. The results indicated that anodic polarization treatment endowed 316 L-Cu SS with a decreased corrosion current and increased pitting potential in comparison with conventional 316 L SS and 316 LCu SS incubated in a biotic medium. The surface morphology observations combined with XPS analysis found that 316 L-Cu SS effectively inhibited bacterial reproduction and promoted the formation of a dense protective extracellular polymeric substance (EPS)-Fe membrane, leading to less susceptibility to pitting corrosion than 316 L SS.