| 不同金属的电化学噪声研究 |
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| 引用本文： | 胡会利,李宁,程瑾宁.不同金属的电化学噪声研究[J].电镀与精饰,2007,29(2):4-7. |
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| 作者姓名： | 胡会利 李宁 程瑾宁 |
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| 作者单位： | 哈尔滨工业大学,应用化学系,黑龙江,哈尔滨,150001;哈尔滨工业大学(威海)海洋学院,山东,威海,264209;哈尔滨工业大学(威海)海洋学院,山东,威海,264209 |
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| 摘 要： | 采用同电极体系,测量了电沉积镍、铜镀层以及铂片在HC l和N aC l溶液中的电化学噪声,研究发现:通过时域分析得到的噪声电阻是评价材料耐蚀性的重要指标,而点蚀指数反映了电极表面反应的均匀程度;通过频域分析可知,高频段斜率可以用于评价镀层发生腐蚀的类型,而白噪声水平可作为判断材料耐蚀性的指标之一。
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| 关 键 词： | 电化学噪声 时域分析 频域分析 腐蚀行为 噪声电阻 金属材料 |
| 文章编号： | 1001-3849（2007）02-0004-04 |
| 收稿时间： | 2006-05-22 |
| 修稿时间： | 2006年5月22日 |
Electrochemical Noise of Different Metals |
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| HU Hui-li,LI Ning,CHENG Jin-ning.Electrochemical Noise of Different Metals[J].Plating & Finishing,2007,29(2):4-7. |
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| Authors: | HU Hui-li LI Ning CHENG Jin-ning |
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| Affiliation: | 1. Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China; 2. School of Ocean, Harbin Institute of Technology, Weihai 264209, China |
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| Abstract: | Electrochemical noise data of electrodeposited nickel and copper coatings and platinum sheet in HCl and NaCl solutions were measured with the application of the identical metal electrodes system.It is found in the study that the noise resistance(Rn) obtained through the time domain analysis is an important index for evaluation of corrosion resistance of the material,and that the pitting index(PI) reflects the uniformity degree of electrode reaction on the electrode.Through frequency domain analysis it is understood that the slope in high frequency section(K) can be used to assess corrosion type occured on the material,and white noise level(W) can be used as one of the indexes to judge the corrosion resistance of the material. |
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| Keywords: | electrochemical noise analysis in time domain analysis in frequency domain corrosion behavior noise resistance metallic material |
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