多介质在碳钢腐蚀过程中的协同作用

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Synergistic Effect of Multi-media on Carbon Steel Corrosion

ZHANG Shaohua, LI Yanrui, WEI Yinghui, LIU Baosheng, HOU Lifeng, DU Huayun, LIU Xiaoda

表2 碳钢在0.2/1.0 mol/L Cl-和0.2/1.0 mol/L Cl-+CO2(1 bar)溶液体系中电化学阻抗谱的拟合参数

Table 2 Parameters of electrochemical impedance spectroscopy component of specimens in solutions containing 0.2/1.0 mol/L Cl- and 0.2/1.0 mol/L Cl-+CO2 (1 bar)

Components 0.2 mol/L Cl- 1.0 mol/L Cl- 0.2 mol/L Cl-+CO2 1.0 mol/L Cl-+CO2 Rs/Ω·cm2 11.90 6.804 12.29 7.434 Qdl/10-4 F·cm-2 1.910 1.843 4.175 3.054 ndl 0.7185 0.7397 0.6790 0.7539 Rct/Ω·cm2 5187 6187 566.8 608.4 RL/Ω·cm2 - - 1609 2145 L/H·cm-2 - - 1260 2513