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首页> 外文期刊>International Journal of Electrochemical Science >Characterization of Corrosion Process of Q235 Carbon Steel in Simulated Concrete Pore Solution by EIS and EN Techniques
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Characterization of Corrosion Process of Q235 Carbon Steel in Simulated Concrete Pore Solution by EIS and EN Techniques

机译：用EIS和EN技术表征Q235碳钢在模拟混凝土孔隙溶液中的腐蚀过程。

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The corrosion behavior of Q235 carbon steel in simulated concrete pore solution was investigated byelectrochemical impedance spectroscopy (EIS) and electrochemical noise (EN) techniques. Theequivalent circuit, statistical analysis, wavelet transform, chaos theory and cluster analysis methodwere employed to research the EIS and EN data of Q235 carbon steel in simulated concrete poressolution. The results showed that at the initial immersion, Q235 steel had higher charge transferresistance, film resistance, noise resistance and fractal dimension, but lower standard deviation I,average charge q and correlation dimension. When the immersion time was larger than 48 hours, thecharge transfer resistance, film resistance, noise resistance and fractal dimension of Q235 steeldecreased greatly, but the standard deviation I, average charge q and correlation dimension of Q235steel increased abruptly. Two distinct stages, i.e. passive state (Cluster 1) and initiation anddevelopment of pitting corrosion (Cluster 2), could be classified for Q235 carbon steel in simulatedconcrete pore solution.
机译：通过电化学阻抗谱（EIS）和电化学噪声（EN）技术研究了Q235碳钢在模拟混凝土孔隙溶液中的腐蚀行为。采用等效电路，统计分析，小波变换，混沌理论和聚类分析方法研究了Q235碳钢在模拟混凝土孔隙溶液中的EIS和EN数据。结果表明，Q235钢在初次浸入时具有较高的电荷传递阻力，薄膜电阻，抗噪声性和分形维数，但具有较低的标准偏差I，平均电荷q和相关维数。当浸泡时间大于48小时时，Q235钢的电荷转移电阻，薄膜电阻，抗噪性和分形维数大大降低，但Q235钢的标准偏差I，平均电荷q和相关维数急剧增加。 Q235碳钢在模拟的混凝土孔隙溶液中可以分为两个不同的阶段，即被动状态（聚类1）和点蚀的发生和发展（聚类2）。

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