In this study, the erosion-corrosion behavior of an API-5L-X65 steel coated by plasma nitriding of hard chromium underlayer has been investigated as a function of flow velocity (4, 5, 6, 7.5 m s⁻¹) and impact angle (30°, 45°, 60°, 90°) by a slurry of 3.5 wt.% NaCl, and 3 wt.%SiO₂. The structure and microstructure of coating were characterized by X-ray diffractometry and scanning electron microscopy techniques. The maximum of mass loss was at the impact angle of 45° which the degradation slightly decreased with the increase of impact angle. However, the maximum degradation of the CrN coated samples occurred at normal impact angle. The analysis of erosion-corrosion mechanism showed the erosion process was more effective than corrosion.

在这项研究中，已经研究了通过硬氮化铬底涂层的等离子渗氮处理的API-5L-X65钢的腐蚀-腐蚀行为与流速（​​4，5，6，7.5 ms ^-1）和冲击角（ 30％，45°，60°，90°）的浆料是由3.5 wt。％NaCl和3 wt。％SiO ₂制成的。通过X射线衍射和扫描电子显微镜技术对涂层的结构和微观结构进行了表征。最大质量损失是在45°的冲击角处，随着冲击角的增加，降解略有减少。但是，CrN涂层样品的最大降解发生在正常冲击角下。对腐蚀-腐蚀机理的分析表明，腐蚀过程比腐蚀更有效。