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首页> 外文期刊>International Journal of Electrochemical Science >Inhibition Effect of Water-Soluble Chitosan N-quaternary Ammonium Salt on Carbon Steel in 0.25 M H2SO4 Solution
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Inhibition Effect of Water-Soluble Chitosan N-quaternary Ammonium Salt on Carbon Steel in 0.25 M H2SO4 Solution

机译：水溶性壳聚糖N-季铵盐在0.25 M H 2 SO 4 溶液中对碳钢的抑制作用

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摘要

The corrosion inhibition of modified natural product (2-hydroxypropyltrimethyl ammonium chloridechitosan (HACC) for carbon steel in 0.25 M H2SO4 solution was studied through four methodsincluding weight loss method, potentiodynamic polarization curves, electrochemical impedancespectroscopy (EIS) and scanning electron microscopy (SEM) techniques. The concentration of HACCand solution temperature affected HACC inhibition efficiency. The weight loss results indicated thehigh HACC concentration and low temperature lead to good inhibition. HACC was a mixed inhibitorby retarding both anodic and cathodic processes simultaneously. Standard free adsorption energyo G ads was calculated and discussed. The adsorption of HACC obeyed the Langmuir isotherm and wasof spontaneous characteristic accompanied by joint physisorption and chemisorption. The corrosionrate of carbon steel was mainly controlled by Ea in 0.25 M H2SO4 solution.
机译：通过失重法，电势极化曲线，电化学阻抗谱（EIS）和扫描电子显微镜（SEM）四种方法研究了改性天然产物（2-羟丙基三甲基氯化壳聚糖（HACC）对碳钢在0.25 M H2SO4溶液中的腐蚀抑制作用。 。HACC浓度和溶液温度影响HACC抑制效率;失重结果表明，高HACC浓度和低温导致良好的抑制作用; HACC是同时阻碍阳极和阴极过程的混合抑制剂，计算了标准的自由吸附能G ad和结果表明，HACC的吸附遵循朗缪尔等温线，具有自发性，伴随着联合物理吸附和化学吸附，碳钢的腐蚀速率主要受Ea在0.25 M H2SO4溶液中的控制。

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