The corrosion behaviors of 2205, 2205-Cu, and 2205-Cu-Ce duplex stainless steels (DSSs) were studied under static load in the presence of sulfate-reducing bacteria (SRB). The results demonstrated that the addition of Cu and Ce effectively enhanced the resistance of 2205 DSS to SRB-assisted cracking, and 2205-Cu-Ce DSS exhibited the best corrosion resistance and mechanical properties. The Synergistic addition of Cu and Ce not only inhibited the formation of SRB biofilm but also enhanced the hydrogen-induced cracking resistance of DSSs due to the hydrogen trapping by Cu-rich precipitates.

中文翻译：

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Cu、Ce协同添加增强2205双相不锈钢硫酸盐还原菌辅助腐蚀开裂性能

研究了 2205、2205-Cu 和 2205-Cu-Ce 双相不锈钢 (DSS) 在硫酸盐还原菌 (SRB) 存在下的静态载荷下的腐蚀行为。结果表明，Cu和Ce的添加有效增强了2205 DSS的抗SRB辅助开裂性能，其中2205-Cu-Ce DSS表现出最好的耐腐蚀性和力学性能。 Cu和Ce的协同添加不仅抑制了SRB生物膜的形成，而且由于富Cu沉淀物的氢捕获作用而增强了DSS的抗氢致开裂性。