Corrosion resistance against amine solvent monoethanolamine (MEA) and mixtures of MEA with methyldiethanolamine (MDEA) was studied. Stainless steel (SS316L) was tested as a baseline to compare with carbon steel (C1018) alone and with the inhibitor sodium thiosulphate (STS). Immersion testing used mass change, Fe ion concentration in solution (ICP–OES), surface imaging (SEM), and analytical techniques (EDX, XRD) to assess the corrosion. Generally, the use of STS improved C1018 resilience relative to C1018 alone, though SS316L was superior to both. Multiple inhibition mechanisms were observed, and are a function of temperature and solution composition. Whilst the surface adsorption mechanism was demonstrated in some cases, reactions between solution reactants and STS resulted in different outcomes.

研究了胺溶剂单乙醇胺（MEA）以及MEA与甲基二乙醇胺（MDEA）混合物的耐腐蚀性。测试了不锈钢（SS316L）作为基准，与单独的碳素钢（C1018）和抑制剂硫代硫酸钠（STS）进行了比较。浸入测试使用质量变化，溶液中的Fe离子浓度（ICP-OES），表面成像（SEM）和分析技术（EDX，XRD）来评估腐蚀。通常，尽管SS316L优于两者，但相对于单独的C1018，使用STS可以提高C1018的弹性。观察到多种抑制机制，它们是温度和溶液组成的函数。尽管在某些情况下证明了表面吸附机理，但溶液反应物与STS之间的反应导致了不同的结果。