1200 MPa级海洋平台用无碳化物贝氏体中锰钢腐蚀行为
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李炎阳, 于驰, 赵伟, 高秀华, 杜林秀
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Corrosion Behavior of 1200 MPa Class Carbide-free Bainite Medium Manganese Steel for Offshore Platform
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LI Yanyang, YU Chi, ZHAO Wei, GAO Xiuhua, DU Linxiu
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表5 不同腐蚀周期下实验钢的极化曲线对应的Tafel参数
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Table 5 Tafel parameters corresponding to the polarization curves of experimental steels under different corrosion periods
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| Time / h | Material | 24 h | 72 h | 168 h | 240 h | 360 h | 576 h |
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| Ecorr / V | 1# | -0.857 | -0.884 | -0.858 | -0.811 | -0.764 | -0.642 | | 2# | -0.821 | -0.863 | -0.810 | -0.762 | -0.652 | -0.511 | | 3# | -0.843 | -0.758 | -0.688 | -0.696 | -0.604 | -0.497 | | icorr / A·cm-2 | 1# | 2.155 × 10-4 | 2.326 × 10-4 | 1.611 × 10-4 | 2.794 × 10-5 | 1.794 × 10-5 | 1.226 × 10-5 | | 2# | 2.195 × 10-4 | 5.194 × 10-4 | 1.792 × 10-4 | 2.656 × 10-5 | 2.582 × 10-7 | 1.370 × 10-7 | | 3# | 2.959 × 10-5 | 2.397 × 10-5 | 8.175 × 10-5 | 1.669 × 10-5 | 3.754 × 10-7 | 1.300 × 10-7 |
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