极化曲线测量电力设备镀锌部件腐蚀速率及其参数优化
Polarization Curve Measurement of Corrosion Rate of Hot-dipped Component in Transmission Equipment and Parameter Optimization
摘 要
采用Tafel曲线、线性极化和弱极化曲线方法测量了锌在3.5% NaCl溶液中的腐蚀速率。通过试验对3种测量方法所得结果作了对比分析，考察了扫描速率和扫描范围对极化曲线测量锌腐蚀速率的影响。结果表明，由于锌的电化学特征，采用线性极化和Tafel曲线测量所得结果精密度较低，而采用弱极化曲线测量可得到较满意的结果; 扫描速率过大或过小都会对测量结果产生较大的误差。而扫描范围的大小也对测量结果有很大的影响。
电化学测量
极化曲线
测量参数
corrosion rate
electrochemical measurement
polarization curve
measurement parameter
Abstract
The corrosion rate of zinc in 3.5% NaCl solution was measured by Tafel, linear polarization and weak polarization curve method. The measured results were analyzed and compared in detail by calculating the standard deviation. The effects of scan rate and scan range on the measurement of corrosion rate were investigated. The results show that the corrosion rate of zinc can be obtained by weak polarization curve method with lower standard deviation, while Tafel and linear polarization curve method always bring larger error. The effects of scan rate and scan range on the precision of measurement were also analyzed in this paper.
中图分类号 TG174
所属栏目 试验研究
基金项目 国家自然科学基金(51271110); 国家电网福建省电力公司科研项目(NC2012068); 上海市教委科研创新重点项目(12ZZ170)
收稿日期 2013/4/12
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备注张俊喜(1963-),教授,博士,从事金属腐蚀与防护研究与应用,
引用该论文: CHEN Tong,TAN Tian,HUANG Wei-lin,YI Bo,YUAN Xu-jie,ZHANG Jun-xi. Polarization Curve Measurement of Corrosion Rate of Hot-dipped Component in Transmission Equipment and Parameter Optimization[J]. Corrosion & Protection, 2014, 35(2): 120
被引情况:
【1】杨超,张成斌,李自力,赵雅蕾,崔淦,丁小勇, "直流杂散电流对X65钢腐蚀行为的影响",腐蚀与防护 37, 873-875(2016)
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参考文献
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【2】POURSAEE A. Determining the appropriate scan rate to perform cyclic polarization test on the steel bars in concrete[J]. Electrochim Acta,2010,55(3):1200-1206.
【3】ZHANG X L,JIANG Z H,YAO Z P,et al. Effect of scan rate on the potentiodynamic polarization curve obtained to determine the Tafel slopes and corrosion current density[J]. Corr Sci,2009,51(2):581-587.
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【5】ALLEN J B,LARRY R F. Electrochemical methods-fundamentals and application,Second ed[M]. New York:Wiley,2001.
【6】JOHN R S,DAVID W S,RUDOLPH G B. Electrochemical techniques in corrosion science and engineering[M]. New York:Marcel Deker,2003.
【7】曹楚南. 腐蚀电化学原理(第三版)[M]. 北京: 化学工业出版社，2008.
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