硅酸盐封闭对TiO2转化膜耐蚀性的影响
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赖德林,孔纲,车淳山
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Effect of Sodium Silicate Sealing on Corrosion Resistance of TiO2Conversion Film on Hot-dip Galvanized
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Delin LAI,Gang KONG,Chunshan CHE
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| 表4 由图12等效电路图拟合得到的EIS结果 |
| Table 4 Fitted results of EIS plots based on equivalent circuit in Fig. 12 |
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| Sample | RsΩ·cm2 | CPEf | Rf Ω·cm2 | CPEdl | Rct Ω·cm2 | RL | L |
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| Yf/ sn·Ω-1·cm-2 | nf | Ydl/ sn·Ω-1·cm-2 | ndl |
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| T10-SiO2 | 0.72 | 1.30×10-5 | 0.921 | 1250 | 2.4×10-4 | 0.500 | 3232 | 4500 | 5900 | | T60-SiO2 | 3.96 | 5.53×10-5 | 0.679 | 7420 | 4.1×10-4 | 0.990 | 16000 | 6500 | 32000 | | T300--SiO2 | 2.09 | 2.42×10-5 | 0.820 | 2800 | 1.0×10-4 | 0.470 | 10055 | 10000 | 38000 | | T1800--SiO2 | 1.67 | 1.94×10-5 | 0.870 | 1001 | 3.2×10-4 | 0.795 | 2200 | 5250 | 13500 |
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