摘要
利用高速火焰喷涂方法,选用自主研发的Fe-Al/Cr3C2喷涂粉材,在20钢基体上制备Fe-Al/Cr3C2复合涂层。研究了复合涂层在650℃的抗高温腐蚀性能。采用SEM,XRD,EDS等先进测试手段分析了复合涂层的抗高温腐蚀机理。结果表明:Fe-Al/Cr3C2复合涂层在650℃的抗高温腐蚀性能明显优于基体20钢,并且优于Fe-Al涂层,其腐蚀动力学曲线呈抛物线变化;复合涂层经腐蚀后,内层生成的致密Al2O3及Cr2O3阻止了高温腐蚀的进一步深入。现场应用表明,Fe-Al/Cr3C2复合涂层具有广泛的应用前景。
Fe-Al/Cr3C2 composite coating which spraying materials were researched by us was made on the 20 steel by High Velocity Flame Spraying（HVFS）.High-temperature corrosion resistance property of HVFS Fe-Al/Cr3C2 coating at 650 ℃ was researched.High-temperature corrosion resistance mechanism was analyzed by SEM,EDS and XRD.The results show that the high-temperature corrosion resistance property of Fe-Al/Cr3C2 is better than 20 steel obviously and Fe-Al coating at 650 ℃,the shape of the corrosion curve is parabola,the inner corrosion coating are densely Al2O3 and Cr2O3 which protect coatings from being corrosion.Fe-Al/Cr3C2 composite coating has widely application foreground through field use.
出处
《表面技术》
EI
CAS
CSCD
北大核心
2010年第3期34-36,108,共4页
Surface Technology
