Microbiologically influenced corrosion (MIC) is one of the reasons leading to the service failure of pipelines buried in the soil. The effects of sulfate-reducing bacteria (SRB) on steel corrosion without organic carbon are not clear. In this work, SRB cells were enriched in the simulated soil solution, aiming to study SRB corrosion behavior without organic carbon source using weight loss, electrochemical measurements, and surface analysis. Effects of DO on SRB corrosion were also studied. Results indicate that SRB can survive after 14 days of incubation without organic carbon source, but approximately 90% SRB have died. SRB without organic carbon source could inhibit the uniform corrosion but enhance the pitting corrosion compared with the control specimen. The corrosion rate of the control calculated from weight loss is highest with a value of (0.081 ± 0.013) mm/y. The highest localized corrosion rate of (0.306 ± 0.006) mm/y is obtained with an initial SRB count of 10⁷ cells/mL. The presence of DO influences the steel corrosion process. Oxygen corrosion dominates for the specimens in the absence and presence of SRB with an initial count of 10³ cells/mL, while SRB MIC is primary for the specimens with high SRB counts.

微生物腐蚀（MIC）是导致埋在土壤中的管道无法使用的原因之一。硫酸盐还原菌（SRB）对不含有机碳的钢腐蚀的影响尚不清楚。在这项工作中，SRB 细胞在模拟土壤溶液中富集，旨在通过失重、电化学测量和表面分析来研究没有有机碳源的 SRB 腐蚀行为。还研究了 DO 对 SRB 腐蚀的影响。结果表明，在没有有机碳源的情况下，SRB 在培养 14 天后仍能存活，但大约 90% 的 SRB 已经死亡。与对照试样相比，不含有机碳源的SRB可以抑制均匀腐蚀，但会增强点蚀。由失重计算的控制腐蚀速率最高，值为 (0.081 ± 0.013) mm/y。(0.306 ± 0.006) mm/y 的最高局部腐蚀速率是在初始 SRB 计数为 10 时获得的^{7 个}细胞/毫升。DO 的存在会影响钢的腐蚀过程。在初始计数为 10 ³细胞/mL的 SRB 不存在和存在下，氧腐蚀对样品占主导地位，而 SRB MIC 对于具有高 SRB 计数的样品是主要的。