EPS的主要成分-蛋白质、多糖抑制碳钢腐蚀机理研究
许萍,张硕,司帅,张雅君,汪长征

Corrosion Mechanism of Carbon Steel Induced by Protein and Polysaccharide-the Main Components of EPS
Ping XU,Shuo ZHANG,Shuai SI,Yajun ZHANG,Changzheng WANG
表1 在纯水以及蛋白质溶液和多糖溶液浸涂24 h过程中碳钢电极等效电路拟合参数
Table 1 Fitting equivalent circuit parameters for carbon steel electrode
ConditionRs / Ω·cm2Cb / μF·cm-2nbRb / Ω·cm2Cf / μF·cm-2nfRP / Ω·cm2n
Water-1 h4.67×102---------3.77×10-4---1.92×1037.15×10-1
Water-3 h4.54×102---------3.95×10-4---1.89×1037.72×10-1
Water-6 h4.24×102---------4.77×10-4---1.83×1038.09×10-1
Water-9 h4.12×102---------4.93×10-4---1.63×1038.19×10-1
Water-12 h4.39×102---------4.98×10-4---1.62×1037.56×10-1
Water-18 h5.17×102---------6.25×10-4---1.60×1037.18×10-1
Water-24 h5.27×102---------6.64×10-4---1.42×1037.90×10-1
Protein-1 h7.12×1023.24×10-88.39×10-13.08×1021.08×10-47.57×10-11.70×103---
Protein-3 h7.16×1023.78×10-88.26×10-14.17×1021.19×10-48.72×10-11.65×103---
Protein-6 h7.87×1023.81×10-89.11×10-14.29×1021.51×10-48.24×10-11.60×103---
Protein-9 h8.11×1024.06×10-89.02×10-14.72×1022.11×10-48.20×10-11.56×103---
Protein-12 h8.02×1024.30×10-89.00×10-15.35×1022.46×10-49.29×10-11.49×103---
Protein-18 h7.25×1024.46×10-89.23×10-15.35×1023.02×10-48.06×10-11.61×103---
Protein-24 h7.74×1024.96×10-89.13×10-16.23×1023.53×10-48.21×10-12.04×103---
Polysaccharide-1 h7.47×1023.36×10-89.34×10-15.25×1025.53×10-48.81×10-11.75×103---
Polysaccharide-3 h7.39×1023.45×10-88.32×10-15.31×1026.44×10-48.68×10-11.67×103---
Polysaccharide-6 h7.27×1023.53×10-87.18×10-15.50×1026.51×10-48.64×10-11.65×103---
Polysaccharide-9 h7.13×1023.66×10-88.58×10-15.63×1027.93×10-48.73×10-11.81×103---
Polysaccharide-12 h8.14×1023.69×10-88.14×10-15.87×1028.83×10-48.67×10-11.97×103---
Polysaccharide-18 h8.03×1024.10×10-89.73×10-15.97×1021.07×10-38.79×10-12.13×103---
Polysaccharide-24 h7.90×1024.70×10-89.72×10-16.08×1021.08×10-37.37×10-12.14×103---