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首页> 外文期刊>Corrosion >Inhibition Behavior of Imidazoline Phosphate Compound Inhibitor on Q235 Steel in Hydrochloric Acid Medium
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Inhibition Behavior of Imidazoline Phosphate Compound Inhibitor on Q235 Steel in Hydrochloric Acid Medium

机译：咪唑啉磷酸盐复合抑制剂在盐酸介质中对Q235钢的抑制行为

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摘要

The inhibitive effect on Q235 steel and the adsorption behavior of a compound inhibitor, including imidazoline phosphate (IPI) and potassium iodide (KI). were studied in 1 mol/L hydrochloric acid (HCl) solution using the weight-loss method, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscopy (SEM). Results showed that the inhibition efficiency increased with an increase in inhibitor concentration, and temperature had no significant effect on inhibition efficiency. The compound inhibitor was a mixed-type inhibitor that mainly inhibits cathodic processes. The best inhibition efficiency was obtained at an immersion time of 120 h. The adsorption of the compound inhibitor on Q235 steel could befitted to a Langmuir isotherm and the values of the adsorption free energy ΔG^sub ads^ are close to -40 kJ/mol over the studied temperature range. The adsorption process is a spontaneous chemical adsorption. [PUBLICATION ABSTRACT]
机译：对Q235钢的抑制作用和复合抑制剂的吸附行为，包括磷酸咪唑啉（IPI）和碘化钾（KI）。在1 mol / L盐酸（HCl）溶液中使用重量损失法，电势极化，电化学阻抗谱（EIS）和扫描电子显微镜（SEM）进行了研究。结果表明，抑制效率随抑制剂浓度的增加而增加，温度对抑制效率无明显影响。复合抑制剂是主要抑制阴极过程的混合型抑制剂。在120 h的浸入时间可获得最佳的抑制效率。 Q235钢上复合抑制剂的吸附可以满足Langmuir等温线的吸附，在研究温度范围内，吸附自由能的值接近-40 kJ / mol。吸附过程是自发的化学吸附。 [出版物摘要]

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    《Corrosion》 |2011年第4期|p.1-7|共7页
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    J Zhang X-L Gong H-H Yu M Du;

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    J. Zhang [double dagger] * X.-L. Gong, * H.-H. Yu, * and M. Du*Submitted for publication September 16, 2010, in revised form, November 10, 2010.[double dagger] Corresponding author. E-mail: dmh217@ouc.edu.cn.* Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, 238 Songling Road, Qingdao 266100, Shandong Province, P.R. China.,;

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