Abstract The role of acetic acid (HAc) or H + in initiating the crevice corrosion of N80 carbon steel in CO 2 -saturated NaCl solution was studied by weight loss and electrochemical measurements. It is demonstrated that crevice corrosion could be initiated by the concentration difference either HAc or H + between outside and inside the crevice. The corrosion rate inside the crevice becomes higher than that outside the crevice and the total corrosion rate inside and outside the crevice decreases after connection. Crevice corrosion is more severe in the solution with HAc than that in the solution with H 2 SO 4 at the same pH value.

中文翻译：

---

醋酸或H + 在CO 2 饱和NaCl溶液中引发N80碳钢缝隙腐蚀的作用

摘要 通过失重和电化学测量研究了乙酸（HAc）或H + 在CO 2 饱和NaCl溶液中引发N80碳钢缝隙腐蚀的作用。结果表明，缝隙腐蚀可能由缝隙内外的 HAc 或 H + 浓度差引发。缝隙内腐蚀速率大于缝隙外腐蚀速率，连接后缝隙内外总腐蚀速率下降。在相同的pH值下，含HAc的溶液比含H 2 SO 4 的溶液的缝隙腐蚀更严重。