| Analysis of corrosion behavior of LY12 in sodium chloride solution with wavelet transform technique |
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| 作者姓名： | 张昭 曹发和 程英亮 张鉴清 王建明 曹楚南 |
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| 作者单位： | Department of Chemistry，Zhejiang University，Department of Chemistry，Zhejiang University，Department of Chemistry，Zhejiang University，Department of Chemistry，Zhejiang University，Department of Chemistry，Zhejiang University，Department of Chemistry，Zhejiang University Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China，Hangzhou 310027，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｓｔｕｄｙｏｆｓｐｏｎｔａｎｅｏｕｓｃｕｒｒｅｎｔｏｒｐｏｔｅｎｔｉａｌｆｌｕｃ ｔｕａｔｉｏｎｓ,ｗｈｉｃｈｈａｓｂｅｅｎｄｅｓｉｇｎａｔｅｄａｓｅｌｅｃｔｒｏｃｈｅｍｉｃａｌｎｏｉｓｅ(ＥＮ) ,ｆｏｒｔｈｅｃｈａｒａｃｔｅ
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| 关 键 词： | 电化学噪声 小波分析 傅立叶变换 腐蚀 铝合金2024-T3 |
Analysis of corrosion behavior of LY12 in sodium chloride solution with wavelet transform technique |
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| ZHANG Zhao ,CAO Fa he ,CHENG Ying liang ,ZHANG Jian qing ,WANG Jian ming ,CAO Chu nan.Analysis of corrosion behavior of LY12 in sodium chloride solution with wavelet transform technique[J].Transactions of Nonferrous Metals Society of China,2002,12(6):1206-1209. |
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| Authors: | ZHANG Zhao CAO Fa he CHENG Ying liang ZHANG Jian qing WANG Jian ming CAO Chu nan |
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| Affiliation: | ZHANG Zhao 1,CAO Fa he 1,CHENG Ying liang 1,ZHANG Jian qing 1,2,WANG Jian ming 1,CAO Chu nan 1,2 |
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| Abstract: | Wavelet transforms(WT) are proposed as an alternative tool to overcome the limitations of fast 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(distinct type of events), which contains information about the time scale characteristic of the associated corrosion event. In this context, the potential noise fluctuations during the free corrosion of commercial aluminum alloy LY12 in sodium chloride solution was recorded and analyzed with wavelet transform technique. The typical results show 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 aluminum alloy 2024 T3 |
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