| 镀镍碳钢在高温无氧水中的腐蚀电化学行为 |
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| 引用本文： | 王雪芬,魏宝明.镀镍碳钢在高温无氧水中的腐蚀电化学行为[J].腐蚀科学与防护技术,1998,10(2):17-22. |
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| 作者姓名： | 王雪芬 魏宝明 |
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| 作者单位： | 南京化工大学应用化学系 |
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| 摘 要： | 利用线性极化法、极化曲线法和交流阻抗技术研究了化学镀非晶态Ni-P和电镀纳米Ni处理的碳钢在高温无氧水中的腐蚀电化学行为.结果表明,功能镀镍薄膜/碳钢复合材料在高温无氧水中的腐蚀是在电偶腐蚀条件下因氢去极化引起的电化学腐蚀,腐蚀的特征是点蚀,腐蚀的程度取决于镀层的均匀程度和镀层自身的耐蚀能力.
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| 关 键 词： | 腐蚀 高温无氧水 镀镍层/碳钢复合电极 交流阻抗法 |
| 收稿时间： | 1998-03-25 |
| 修稿时间： | 1998-03-25 |
ELECTROCHEMICAL CORROSION BEHAVIOUR OF VARIOUS Ni COATING/CARBON STEEL BILAYER IN OXYGEN FREE WATER AT HIGH TEMPERATURES |
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| Abstract: | The electrochemical corrosion behaviour of electroless amorphous Ni P coating/carbon steel substrate and electro deposited nanocrystalline Ni coating/carbon steel substrate were studied by linear polarization, potentiostatic curve and AC impendance techniques in oxygen free water at high temperatures. Results showed that the corrosion of the functional Ni coating/carbon steel composite materials was caused by hydrogen depolarization under galvanic couple condition. Their corrosion rates depended on the porosity and the intrinsic corrosion rate of the coating. |
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| Keywords: | corrosion oxygen free water high temperature Ni coated carbon steel composite electrode AC impendance |
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