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Development mechanism of internal local corrosion of X80 pipeline steel
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Zhuowei Tan, Liuyang Yang, Dalei Zhang, Zhenbo Wang, Frank Cheng, Mingyang Zhang, Youhai Jin
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Table 2 Equivalent circuit fitting of EIS data of the PS, v = 3 m/s.
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| Time (h) | Rs
(Ω cm2) | Qdl
(Ω-1 cm-2 s-n) | ndl | Rct
(Ω cm2) | Qpf
(Ω-1 cm-2 s-n) | npf | Rpf
(Ω cm2) | Ave err (%) | | 1 | 11.06 | 2.6E-4 | 0.8223 | 284.1 | | | | 4.82 | | 3 | 11.04 | 2.9E-4 | 0.8003 | 275.5 | | | | 5.16 | | 6 | 11.24 | 4.1E-4 | 0.7684 | 269.3 | | | | 4.04 | | 7 | 11.36 | 6.9E-5 | 1 | 39.89 | 4.8E-4 | 0.8614 | 214.2 | 8.31 | | 10 | 11.31 | 6.9E-5 | 1 | 38.95 | 5.3E-4 | 0.8570 | 208.7 | 8.92 | | 13 | 11.05 | 7.4E-5 | 1 | 36.29 | 6.5E-4 | 0.8529 | 188.7 | 9.14 | | 16 | 11.37 | 7.6E-5 | 1 | 35.87 | 7.3E-4 | 0.8515 | 183.9 | 9.01 |
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