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Inhibition of CO_2 Corrosion of X52 Steel by Imidazoline-Based Inhibitor in High Pressure CO_2-Water Environment

机译:咪唑啉基缓蚀剂在高压CO_2-水环境中抑制X52钢的CO_2腐蚀

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摘要

The influence of imidazoline-based inhibitor on the formation, microstructure, and thickness of the corrosion product film that formed on X52 steel after exposure in an environment of high pressure CO_2 containing formation water at high temperature was studied by using weight loss measurement, linear polarization resistance, scanning electron microscopy, energy dispersive x-ray, x-ray diffraction, and x-ray photoelectron spectroscopy. The results showed that the inhibitor significantly influenced the surface morphology and thickness of the corrosion product film. The severity of localized corrosion (pitting) increased with decreased inhibitor concentration. Inhibitor efficiency was observed to be strongly affected by the concentration of inhibitor and CO_2 pressure. The corrosion product film was mainly composed of FeCO_3.
机译:采用失重法,线极化法研究了咪唑啉系缓蚀剂对X52钢在高温CO 2高压环境下暴露后形成的腐蚀产物膜的形成,组织和厚度的影响。电阻,扫描电子显微镜,能量色散X射线,X射线衍射和X射线光电子能谱。结果表明,缓蚀剂显着影响腐蚀产物膜的表面形态和厚度。随着抑制剂浓度的降低,局部腐蚀(点蚀)的严重性增加。观察到抑制剂的效率受抑制剂浓度和CO_2压力的强烈影响。腐蚀产物膜主要由FeCO_3组成。

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