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首页> 外文期刊>International Journal of Electrochemical Science >Inhibition on Carbon Steel Corrosion in Presence of Hydrocarbon
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Inhibition on Carbon Steel Corrosion in Presence of Hydrocarbon

机译：碳氢化合物对碳钢腐蚀的抑制作用

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In this work the study of electrochemical behaviour of organic compounds as corrosion inhibitors isbeing done over a carbon steel AISI 1018 immersed in a corrosive synthetic environment (brine typeNACE 1D196), in the absence and presence of hydrocarbon. The techniques used were theelectrochemical Polarisation curves and electrochemical impedance spectroscopy. In the Polarisationcurves, the presence of corrosion inhibitors in the system shows that increasing of theconcentration affects both the anodic and the cathodic stages of the corrosion process, showing that theobtained currents are lower by increasing the concentration of the inhibitor. On the other hand theinhibitor efficiency decreases with the presence of hydrocarbon in different systems. Electrochemicalimpedance spectroscopy shows that steel has high activity in the environments studied, being moreremarkable at low frequencies and in the presence of hydrocarbon since the spectrashows flattened semicircles, with low values of real impedance and inductive trends. Thisestablishes that the interaction of ions in the solution with the metal, where adsorptionprocesses are governing the corrosion mechanism, is favoured by the presence of hydrocarbon.
机译：在这项工作中，有机化合物作为腐蚀抑制剂的电化学行为的研究是在没有碳氢化合物存在的情况下，将碳钢AISI 1018浸入腐蚀性合成环境（盐水类型NACE 1D196）中进行的。所使用的技术是电化学极化曲线和电化学阻抗谱。在极化曲线中，系统中腐蚀抑制剂的存在表明浓度的增加会影响腐蚀过程的阳极和阴极阶段，表明通过增加抑制剂的浓度获得的电流较低。另一方面，抑制剂的效率随着在不同系统中存在烃而降低。电化学阻抗谱表明，钢在所研究的环境中具有较高的活性，在低频和存在碳氢化合物的情况下，其表现更为显着，因为谱显示出扁平的半圆，其真实阻抗和电感趋势值较低。这证实了碳氢化合物的存在有利于溶液中离子与金属的相互作用，其中吸附过程决定了腐蚀机理。

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