Abstract The formation and evolution of corrosion product scales on 13Cr stainless steel at 200 °C and various CO2 partial pressures were investigated. Scanning electron microscope was used to show the physical nature of the scales formed at 0.27 MPa CO2. The thin non-uniform layer was identified as FeCr2O4 by Raman Spectroscopy with a thick Cr(OH)3 layer being determined at 2.85 MPa CO2. These results provide a guide to understanding the mechanisms of CO2 corrosion for 13Cr stainless steel exposed to high temperature and pressure and demonstrate the influence of thermodynamics and kinetics on the formation and evolution of the corrosion products.

中文翻译：

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地热环境下 13Cr 不锈钢腐蚀产物垢形成和演化的热力学和动力学研究

摘要 研究了 13Cr 不锈钢在 200 °C 和不同 CO2 分压下腐蚀产物垢的形成和演变。扫描电子显微镜用于显示在 0.27 MPa CO2 下形成的鳞片的物理性质。薄的不均匀层通过拉曼光谱确定为 FeCr2O4，厚的 Cr(OH)3 层在 2.85 MPa CO2 下确定。这些结果为理解暴露于高温和高压下的 13Cr 不锈钢的 CO2 腐蚀机制提供了指导，并证明了热力学和动力学对腐蚀产物形成和演变的影响。