Abstract Coupons of carbon steel were corroded in situ in anoxic clay porewater under slightly alkaline conditions. Sample damage was less than 1 μm for 9 months at 85 °C only, and corrosion interfaces were covered by a thin, protective layer of Fe-silicate. The damage was more significant for samples exposed to room temperature transients (up to 38 μm for two years), and the long-term surface differentiated in cathodic (Fe-silicate covered) areas and anodic crevices filled with siderite, chukanovite, β-Fe2(OH)3Cl, and covered by tubercles. Sulfide compounds were detected, and were related to the metabolism of sulfate-reducing prokaryotes detected by microbiological techniques.

中文翻译：

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缺氧碱性和温度波动条件下碳钢-粘土钻孔水界面的腐蚀

摘要 在弱碱性条件下，在缺氧粘土孔隙水中对碳钢试样进行原位腐蚀。仅在 85 °C 下 9 个月，样品损伤小于 1 μm，腐蚀界面被一层薄薄的硅酸铁保护层覆盖。对于暴露于室温瞬变（两年高达 38 μm）的样品，损坏更为显着，并且长期表面在阴极（覆盖硅酸铁）区域和充满菱铁矿、chukanovite、β-Fe2 的阳极裂缝中分化(OH)3Cl，并被结节覆盖。检测到硫化物化合物，并与微生物技术检测到的硫酸盐还原原核生物的代谢有关。