纳米改性环氧隔热涂层的制备及其耐蚀性研究
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吕晓明, 王震宇, 韩恩厚
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Preparation and Corrosion Resistance of Nano-ZrO2 Modified Epoxy Thermal Insulation Coatings
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LYU Xiaoming, WANG Zhenyu, HAN En-Hou
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表2 环氧及改性涂层在60℃下3.5%NaCl溶液中浸泡不同时间后的EIS拟合结果
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Table 2 Fitting results of EIS of unmodified and modified epoxy coatings immersed in 3.5%NaCl solution at 60oC for different time
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| Sample | Time h | Rs Ω·cm2 | Qcoat F·cm-2 | nc | Rcoat Ω·cm2 | Qct F·cm-2 | nct | Rct Ω·cm2 |
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| Z0 | 24 | 0.36 | 1.12 × 10-9 | 0.94 | 3.90 × 1010 | 1.95 × 103 | 0.99 | 2.34 × 109 | | 480 | 4.62 | 8.83 × 10-10 | 0.97 | 9.55 × 106 | 4.60 × 10-6 | 0.77 | 8.41 × 106 | | 960 | 2.43 | 4.21 × 109 | 0.98 | 2.79 × 105 | 1.41 × 10-5 | 0.39 | 5.22 × 105 | | 1440 | 7.73 | 4.79 × 10-9 | 0.99 | 8.02 × 104 | 2.46 × 10-5 | 0.40 | 1.03 × 105 | | Z1 | 24 | 0.42 | 7.30 × 10-10 | 0.90 | 9.52 × 1010 | 3.28 × 10-9 | 0.13 | 1.01 × 109 | | 480 | 6.98 | 1.15 × 10-10 | 0.99 | 4.13 × 108 | 7.41 × 10-8 | 0.87 | 6.04 × 107 | | 960 | 3.59 | 2.83 × 10-9 | 0.95 | 4.87 × 107 | 3.13 × 10-7 | 0.72 | 9.43 × 107 | | 1440 | 6.62 | 1.53 × 10-9 | 0.99 | 6.99 × 106 | 2.06 × 10-6 | 0.68 | 1.78 × 106 | | Z3 | 24 | 0.38 | 4.75 × 10-11 | 0.96 | 7.23 × 1010 | 3.16 × 10-11 | 0.85 | 3.51 × 1010 | | 480 | 5.15 | 6.39 × 10-11 | 0.97 | 4.38 × 1010 | 2.87 × 10-8 | 0.01 | 1.61 × 109 | | 960 | 3.29 | 2.17 × 10-9 | 0.91 | 1.28 × 109 | 1.52 × 10-7 | 0.01 | 9.31 × 108 | | 1440 | 3.28 | 1.36 × 10-9 | 0.95 | 1.82 × 108 | 1.36 × 10-7 | 0.65 | 3.22 × 107 | | Z5 | 24 | 0.28 | 5.56 × 10-11 | 0.96 | 4.83 × 1010 | 2.92 × 105 | 0.93 | 1.58 × 109 | | 480 | 5.28 | 2.09 × 10-10 | 0.96 | 5.04 × 109 | 3.21 × 102 | 0.76 | 2.81 × 108 | | 960 | 4.56 | 6.37 × 10-10 | 0.98 | 8.47 × 108 | 3.48 × 10-8 | 0.60 | 7.70 × 108 | | 1440 | 4.32 | 1.49 × 10-9 | 0.96 | 1.05 × 107 | 5.21 × 10-9 | 0.14 | 7.11 × 106 |
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