| ELECTROCHEMICAL NOISE ANALYSIS OF PURE ALUMINUM IN SODIUM CHLORIDE SOLUTION WITH WAVELET TRANSFORM TECHNIQUE |
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| 引用本文： | Z. Zhang,Q.D. Zhong,J.Q. Zhang,Y.L. Cheng,F.H. Cao,J.M. and C.N. CaoDepartment of Chemistry,Zhejiang University,Hangzhou 310027,ChinaElectrochemical Research Group,Shanghai University of Electric Power,Shanghai 200090,ChinaState Key Laboratory. ELECTROCHEMICAL NOISE ANALYSIS OF PURE ALUMINUM IN SODIUM CHLORIDE SOLUTION WITH WAVELET TRANSFORM TECHNIQUE[J]. 金属学报(英文版), 2002, 15(3): 272-278 |
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| 作者姓名： | Z. Zhang Q.D. Zhong J.Q. Zhang Y.L. Cheng F.H. Cao J.M. and C.N. CaoDepartment of Chemistry Zhejiang University Hangzhou 310027 ChinaElectrochemical Research Group Shanghai University of Electric Power Shanghai 200090 ChinaState Key Laboratory |
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| 作者单位： | Z. Zhang，Q.D. Zhong，J.Q. Zhang，Y.L. Cheng，F.H. Cao，J.M. and C.N. CaoDepartment of Chemistry，Zhejiang University，Hangzhou 310027，ChinaElectrochemical Research Group，Shanghai University of Electric Power，Shanghai 200090，ChinaState Key Laboratory |
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| 基金项目： | the financial support of the National Key Basic Research Foundation of China (Project G19990650), the National Natural Science Foundation of China (Project 50071054) and the financial support of State Key |
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| 摘 要： | 1．I口毗rodOCtlOOThe characterlzatlon and monltoringofcorroslon process usingelectrochemlcal noisetechnology has received considerable attention since 1968[1－41．One of*theion most imper－tant advantages offered by this electrochemlcal technique Is its l
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ELECTROCHEMICAL NOISE ANALYSIS OF PURE ALUMINUM IN SODIUM CHLORIDE SOLUTION WITH WAVELET TRANSFORM TECHNIQUE |
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| Z. Zhang Q.D. Zhong J.Q. Zhang Y.L. Cheng F.H. Cao J.M. Wang C.N. Cao. ELECTROCHEMICAL NOISE ANALYSIS OF PURE ALUMINUM IN SODIUM CHLORIDE SOLUTION WITH WAVELET TRANSFORM TECHNIQUE[J]. Acta Metallurgica Sinica(English Letters), 2002, 15(3): 272-278 |
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| Authors: | Z. Zhang Q.D. Zhong J.Q. Zhang Y.L. Cheng F.H. Cao J.M. Wang C.N. Cao |
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| Affiliation: | Department of Chemistry, Zhejiang University, Hangzhou 310027, China Electrochemical Research Group, Shanghai University of Electric Power, Shanghai 200090, China Department of Chemistry, Zhejiang University, Hangzhou 310027, China; State Key Laboratory for Corrosion and Protection of Metals, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China Department of Chemistry, Zhejiang University, Hangzhou 310027, China Department of Chemistry, Zhejiang University, Hangzhou 310027, China Department of Chemistry, Zhejiang University, Hangzhou 310027, China Department of Chemistry, Zhejiang University, Hangzhou 310027, China; State Key Laboratory for Corrosion and Protection of Metals, Institute of Metal Research, The Chinese Academy of Sciences, Shenyang 110016, China |
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| Abstract: | Wavelet transforms (WT) are proposed as an alternative tool to overcome the limitations of Fourier transforms (FFT) in the analysis of electrochemical noise (EN) data. The most relevant feature of this method of analysis is its capability of decomposing electrochemical noise records into different sets of wavelet coefficients, which contain information about the time scale characteristic of the associated corrosion event. In this context, the potential noise fluctuations during the free corrosion of pure aluminum in sodium chloride solution was recorded and analyzed with wavelet transform technique. The typical results showed that the EN signal is composed of distinct type of events, which can be classified according to their scales, i.e. their time constants. Meanwhile, the energy distribution plot (EDP) can be used as "fingerprints" of EN signals and can be very useful for analyzing EN data in the future. |
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| Keywords: | electrochemical noise wavelet analysis Fourier transforms corrosion pure aluminum |
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