首页> 外文期刊>International journal of hydrogen energy >Inhibition effect of natural polysaccharide composite on hydrogen evolution and P110 steel corrosion in 3.5 wt% NaCl solution saturated with CO_2: Combination of experimental and surface analysis
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Inhibition effect of natural polysaccharide composite on hydrogen evolution and P110 steel corrosion in 3.5 wt% NaCl solution saturated with CO_2: Combination of experimental and surface analysis

机译:用CO_2饱和3.5wt%NaCl溶液中的天然多糖复合材料对3.5wt%NaCl溶液中的P110钢腐蚀的抑制作用:实验性和表面分析的组合

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摘要

For the analysis of corrosion and hydrogen production inhibition, we have synthesized Guar gum and methylmethacrylate (GG-MMA) composite. The synthesized composite was used as an eco-friendly corrosion inhibitor for P110 steel in 3.5% NaCl solution saturated with carbon dioxide at 50 °C. The primary corrosion techniques like weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) was used to analyze the corrosion inhibition process. EIS study reveals the kinetically controlled corrosion inhibition process. The results of PDP proposed that GG-MMA composite is the cathodic type of inhibitor. The corrosion inhibition performance of GG-MMA alone is 90% at 400 mg/L, and that of formulation with KI (5 mM) + GG-MMA (300 mg/L) is 96.8%. The adsorption of GG-MMA over P110 steel is spontaneous and mixed type i.e., both physical and chemical. The conformation of GG-MMA molecule adsorption was done using a scanning electron microscope (SEM), Contact angle measurement, Atomic force microscopy (AFM), Scanning Electrochemical Microscopy (SECM) and X-ray photoelectron spectroscopy studies.
机译:为了分析腐蚀和氢气产生抑制,我们已经合成了瓜尔胶和甲基丙烯酸甲酯(GG-MMA)复合材料。合成的复合材料用作3.5%NaCl溶液的P110钢的生态友好腐蚀抑制剂,其在50℃下饱和二氧化碳。使用重量损失,电化学阻抗光谱(EIS)和电位动力学极化(PDP)的主要腐蚀技术用于分析腐蚀抑制过程。 EIS研究揭示了动力学控制的腐蚀抑制过程。 PDP的结果提出,GG-MMA复合材料是阴极抑制剂。仅GG-MMA的腐蚀抑制性能为400mg / L的90%,用Ki(5mm)+ Gg-MMA(300mg / L)的配方为96.8%。 GG-MMA对P110钢的吸附是自发性和混合型的I.E.,既有物理和化学品。使用扫描电子显微镜(SEM),接触角测量,原子力显微镜(AFM),扫描电化学显微镜(SECM)和X射线光电子体光谱研究进行GG-MMA分子吸附的构象。

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