摘要
The potential noise during corrosion of pure aluminum in sodium chloride solution was recorded and analyzed with wavelet transform technique. The typical results show that the electrochemical noise (EN) signal is composed of distinct type of events, which can be classified according to their scales, i.e. time constants. And the process underlying the rapid fluctuations of EN, which is characterized by a small scaling value, i.e. high frequency components and which is usually used for local analysis, is not consistant with time; whilst those associated with slower processes or characterized by a large scaling value, which are usually used for global analysis, are continuous.
The potential noise during corrosion of pure aluminum in sodium chloridesolution was recorded and analyzed with wavelet transform technique. The typical results show thatthe electrochemical noise (EN) signal is composed of distinct type of events, which can heclassified according to their scales, i. e. time constants. And the process underlying the rapidfluctuations of EN, which is characterized by a small scaling value, i. e. high-frequency componentsand which is usually used for local analysis, is not consistant with time; whilst those associatedwith slower processes or characterized by a large scaling value, which are usually used for globalanalysis, are continuous.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第3期613-616,共4页
Transactions of Nonferrous Metals Society of China
基金
Project(G19990 65 0 )supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina,project(50071054)supportedbytheNationalNaturalScienceFoundationofChina
projectsupportedbytheStateKeyLaboratoryforCorrosionandProtection,China
关键词
氯化钠溶液
纯铝
腐蚀过程
电化学噪声
小波分析
wavelet analysis
electrochemical noise
localized corrosion
pure aluminum
chaos
