双子表面活性剂与硫脲在CO_2饱和盐水中对碳钢的缓蚀协同效应

Synergistic Inhibition Effect of Gemini Surfactant and Thiourea on Corrosion of Carbon Steel in CO_2-saturated Brine Solution

采用静态失重法、动电位极化和电化学阻抗谱技术研究了双子表面活性剂(12-3OH-12)与硫脲的复配物在CO2腐蚀环境中对Q235碳钢的缓蚀行为。结果表明,双子表面活性剂与硫脲具有一定的协同效应,复配后缓蚀剂的缓蚀效率得到提高;双子表面活性剂与硫脲的最佳复配比为1∶2。

The corrosion inhibition of gemini surfactant （12-3 OH- 12） and thiourea for Q235 steel in CO2-saturated brine solution was investigated using mass-loss method, potentiodynamic polarization and electrochemical impedance spectroscopy （EIS）. The results indicated that a synergistic effect is founded for the gemini surfactant and thiourea. The optium mixing ratio of the gemini surfactant to thiourea is 1：2.