NH+4浓度对N80钢在饱和CO2 的3%NaCl溶液中腐蚀行为的影响
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解辉, 于超, 花靖, 蒋秀
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Effect of NH+4 Concentration on Corrosion Behavior of N80 Steel in CO2-saturated 3%NaCl Solutions
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XIE Hui, YU Chao, HUA Jing, JIANG Xiu
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表1 N80钢的EIS拟合数据
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Table 1 Fitting data of EIS of N80 steel
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| NH+4 concentration mg·L-1 | Time h | Rs Ω·cm2 | CPEf F·cm-2 | n1 | Rm Ω·cm2 | CPEdl F·cm-2 | n2 | Rct Ω·cm2 |
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| 0 | 72 | 9.241 | 4.649 × 10-4 | 0.8960 | 1681 | 2.009 × 10-3 | 0.3911 | 2197 | | 150 | 72 | 9.577 | 6.201 × 10-4 | 0.9148 | 2260 | 8.881 × 10-3 | 1 | 264.8 | | 500 | 72 | 7.670 | 6.670 × 10-4 | 0.9144 | 1014 | 1.008 × 10-3 | 0.4964 | 1206 | | 1000 | 72 | 4.846 | 3.522 × 10-4 | 0.9382 | 3240 | 3.261 × 10-3 | 0.7541 | 784.8 | | 2000 | 72 | 4.976 | 3.888 × 10-4 | 0.9268 | 3936 | 2.684 × 10-3 | 0.6916 | 2024 |
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