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首页> 外文期刊>Progress in Organic Coatings: An International Review Journal >A comparison between electrochemical noise and electrochemical impedance measurements performed on a coal tar epoxy coated steel in 3% NaCl
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A comparison between electrochemical noise and electrochemical impedance measurements performed on a coal tar epoxy coated steel in 3% NaCl

机译：在3％NaCl中的煤焦油环氧涂层钢上进行电化学噪声和电化学阻抗测量的比较

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摘要

The protective performance of epoxy coatings on mild steel immersed in 3.5% NaCl solutions was evaluated by means of electrochemical noise analysis and electrochemical impedance spectroscopy (EIS). Current and voltage noise were recorded and the standard deviations of the potential, current and noise resistance were calculated. Additionally, the spectral noise resistance (R _(SN)) was obtained from the harmonic analysis of the noise data. Finally, EIS measurements were carried out and the data fitted with an equivalent circuit from which the polarization resistance was obtained. Resistance parameters obtained by both techniques were found to be in good agreement. A set of parameters obtained from electrochemical noise measurement is proposed to be used for the assessment of the performance of protective coatings.
机译：通过电化学噪声分析和电化学阻抗谱（EIS）评估了浸渍在3.5％NaCl溶液中的低碳钢上环氧涂层的防护性能。记录电流和电压噪声，并计算电势，电流和噪声电阻的标准偏差。另外，从噪声数据的谐波分析获得了频谱噪声阻抗（R _（SN））。最后，进行EIS测量，并将数据与等效电路拟合，从中可以得到极化电阻。发现通过两种技术获得的电阻参数非常吻合。提出了从电化学噪声测量中获得的一组参数，用于评估防护涂层的性能。

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