This article presents a literature review and corrosion testing outputs to fill the knowledge gaps about the effect of H₂S on corrosion and sulfide stress cracking (SSC) of pipeline steels in supercritical CO₂ (s-CO₂) environments. In H₂O-saturated s-CO₂, H₂S facilitates the formation of a protective FeS layer with a threshold content less than 50 ppm. Increasing temperature or adding O₂ destroys the integrity of FeS layer and remarkably enhances corrosion. The corrosion is likely to be controlled by gas chemical reactions instead of electrochemical reactions. The SSC susceptibility of strained pipeline steels is lower than expected.

本文介绍了文献综述和腐蚀测试结果，以填补有关 H ₂ S 对超临界 CO ₂ (s-CO ₂ ) 环境中管线钢的腐蚀和硫化物应力开裂 (SSC)影响的知识空白。在 H ₂ O 饱和的 s-CO _{2 中}，H ₂ S 有助于形成阈值含量小于 50 ppm 的保护性 FeS 层。升高温度或添加 O ₂会破坏 FeS 层的完整性并显着增强腐蚀。腐蚀可能由气体化学反应而不是电化学反应控制。应变管线钢的 SSC 敏感性低于预期。