应用动电位扫描、交流阻抗法研究了含H2S的硫酸溶液中丙决醇（PA）对铁腐蚀的抑制作用。结果表明，PA能有效抑制铁在酸性H2S体系中腐蚀的阴、阳极反应，属于以抑制阳极反应为主的负催化型缓蚀剂；一定温度范围内，PA具有较好的缓蚀效能；吸附在电极表面的PA能逐渐聚合成膜，但膜对基体的保护性与电极表面状态相关；H2S可影响PA间的聚合反应，且降低聚合膜的致密性与完整性。
The inhibition of propargyl alcohol (PA) on iron corrosion in H2S-containing sulfuric acid solutions has been studied using electrochemical potentiodynamic polarization method and impedance measurements.The results showed that PA could greatly retard the corrosion of iron in sulfuric acid containing H2S, which was attributed mainly to the inhibition effect of PA on the anodic dissolution reaction of iron.It wa also found that PA performed its function effectively when the temperature of solution wa between 30℃ to 65℃.However,the ingibition effect of PA decreased enormously ofr the temperature higher than 65℃.In addition,a polymer film of PA could gradually form on iron surface,and its protective ability was related with the surface state of corroded iron.H2S could influence the polymerization of PA and damage the comeatibility and integrity of the polymer.
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