缝隙几何尺寸对闭塞区化学环境及腐蚀行为的影响
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许志昱, 胡骞, 黄峰, 刘静, 卢献忠
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Effect of Crevice Geometry on Chemical Environment of Crevice Solution and Corrosion Behavior of 2205 Duplex Stainless Steel
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XU Zhiyu, HU Qian, HUANG Feng, LIU Jing, LU Xianzhong
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表1 不同缝隙高度和闭塞区体积时电极1的EIS谱拟合参数
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Table 1 Fitting parameters of EIS for WE1 under different conditions of crevice gap and solution volume
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Time h | Crevice geometry parameter | Fitting parameters of EIS |
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| V / mL | δ / μm | Rct / Ω·cm2 | Rs / Ω·cm2 | R / Ω·cm2 | ΔRs / Ω·cm2 |
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| 16 | 1.2 | 300 | 3.87 × 106 | 4.9 | 248.5 | 243.6 | | 16 | 1.2 | 200 | 1.91 × 106 | 5.2 | 260.5 | 255.3 | | 16 | 1.2 | 100 | 1.27 × 106 | 2.2 | 600.9 | 598.7 | | 16 | 2.4 | 100 | 4.64 × 106 | 9.8 | 425.5 | 415.7 | | 16 | 3.6 | 100 | 8.30 × 106 | 6.9 | 459.0 | 452.1 | | 46 | 1.2 | 300 | 6.37 × 103 | 5.5 | 323.1 | 317.6 | | 46 | 1.2 | 200 | 9.79 × 103 | 5.5 | 261.8 | 256.3 | | 46 | 1.2 | 100 | 1.23 × 105 | 9.2 | 575.9 | 566.7 | | 46 | 2.4 | 100 | 1.83 × 104 | 6.7 | 474.0 | 467.3 | | 46 | 3.6 | 100 | 1.20 × 104 | 9.4 | 456.7 | 447.3 |
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