应力-溶解氧耦合对Ni-Cr-Mo-V高强钢腐蚀行为的影响
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孙佳钰, 彭文山, 邢少华
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Combined Effect of Stress and Dissolved Oxygen on Corrosion Behavior of Ni-Cr-Mo-V High Strength Steel
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SUN Jiayu, PENG Wenshan, XING Shaohua
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表2 高强钢在受拉应力作用下含DO的天然海水中浸泡5 d后的极化曲线拟合参数
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Table 2 Fitting parameters of polarization curves of Ni-Cr-Mo-V steel immersed for 5 d in natural seawater under different conditions of DO concentration and applied stress
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| DO / mg·L-1 | Applied stress | ba / mV·dec-1 | bc / mV·dec-1 | Ecorr / V | Icorr / A·cm-2 |
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3.5 | 0%Rp0.2 | 57.67 | -295.99 | -0.64 | 3.58 × 10-6 | | 50%Rp0.2 | 56.89 | -351.79 | -0.64 | 4.46 × 10-6 | | 100%Rp0.2 | 57.56 | -396.83 | -0.63 | 5.11 × 10-6 | 4.5 | 0%Rp0.2 | 73.39 | -319.74 | -0.62 | 4.06 × 10-6 | | 50%Rp0.2 | 73.92 | -452.67 | -0.61 | 5.62 × 10-6 | | 100%Rp0.2 | 71.30 | -483.37 | -0.62 | 7.35 × 10-6 | 5.5 | 0%Rp0.2 | 75.64 | -369.07 | -0.63 | 5.07 × 10-6 | | 50%Rp0.2 | 78.54 | -546.61 | -0.60 | 8.33 × 10-6 | | 100%Rp0.2 | 79.05 | -724.49 | -0.57 | 9.91 × 10-6 | 6.5 | 0%Rp0.2 | 78.70 | -489.23 | -0.60 | 7.76 × 10-6 | | 50%Rp0.2 | 74.75 | -771.37 | -0.56 | 9.48 × 10-6 | | 100%Rp0.2 | 108.52 | -1003.2 | -0.55 | 1.18 × 10-5 |
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