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首页> 外文期刊>International Journal of Electrochemical Science >Influence of the Immersion Time and Temperature on the Corrosion of API X52 Steel in an Aqueous Salt Medium
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Influence of the Immersion Time and Temperature on the Corrosion of API X52 Steel in an Aqueous Salt Medium

机译：浸入时间和温度对API X52钢在盐介质中腐蚀的影响

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Surface analyses aimed at assessing the corrosion damage suffered by API 5L X52 steel as a result of long immersion times in an aqueous salty medium (ASM), in absence and presence of oxygen, were carried out. The ASM chemical analyses revealed high concentrations of inorganic and organic ions, which evidenced a highly corrosive medium. The characterization of the corrosion products formed after 60 days exposing the steel sample to the ASM was performed by X-ray photoelectron spectroscopy (XPS), which confirmed the presence of different iron oxide faces. The modeling of electrochemical impedance spectroscopy (EIS) spectra showed that the electric charge transfer is a function of the temperature and immersion time used to expose the steel sample to the aqueous medium. Finally, the SEM/EDX analyses confirmed the combined presence of a not-compact film with corrosion products and salts on the surface, having as a result, an irregular and porous surface topography.
机译：进行了旨在评估API 5L X52钢在无氧和有氧条件下长时间浸泡在咸水介质（ASM）中所遭受的腐蚀破坏的表面分析。 ASM的化学分析显示出高浓度的无机和有机离子，这证明是一种高度腐蚀的介质。通过X射线光电子能谱（XPS）对将钢样品暴露在ASM中60天后形成的腐蚀产物进行表征，证实了存在不同的氧化铁表面。电化学阻抗谱（EIS）谱的建模表明，电荷转移是温度和浸入时间的函数，浸入时间是将钢样品暴露在水性介质中的时间。最终，SEM / EDX分析证实了非致密膜的结合存在，表面上存在腐蚀产物和盐分，结果形成了不规则且多孔的表面形貌。

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