Analysis of Electrochemical Noise Data for Polymer Coated Steel in the Time and Frequency Domains

摘要: Electrochemical noise data were collected by remote control during exposure of two coating systems applied on steel to natural seawater. The experimental analyzed in the time and frequency domains. resistance, R{sub n}, was calculated as ratio standard deviations potential {sigma}{l_brace}V(t){r_brace} current {sigma}{l_brace}l(t){r_brace} fluctuations. After fast Fourier transform into domain, spectral plots obtained from which sn}{sup o} determined. compared impedance spectra certain limitations electrochemical analysis technique noted for protective coatings at early stages exposure. A unique relationship n} with properties polymer remains questionable.