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采用增重法研究了1Cr17铁素体不锈钢在900℃空气中循环氧的高温动力学,并结合扫描电镜、能谱分析以及X射线衍射等手段,对氧化膜形貌、成分和组织结构进行了分析研究。结果表明,1Cr17铁素体不锈钢在900℃氧化时,初期增重较快,随着循环次数的增加,氧化增重有所减小且遵循抛物线规律;1Cr17铁素体不锈钢在900℃下经240次循环氧化后,形成了双层氧化物膜并且产生了大量裂纹和空隙,外层以Fe2O3和Fe3O4为主,内层以Cr2O3为主。
The kinetics of circulating oxygen in 1Cr17 ferritic stainless steel at 900 ℃ was studied by using the method of weight gain. The morphology, composition and microstructure of the oxide film were studied by scanning electron microscopy, energy dispersive spectroscopy and X-ray diffraction Analysis. The results show that the initial weight gain of 1Cr17 ferritic stainless steel increases with the increase of the number of cycles, and the parabolic law follows. When 1Cr17 ferritic stainless steel is oxidized at 900 ℃, After the second cycle of oxidation, a double oxide film was formed and a large number of cracks and voids were formed. The outer layer was dominated by Fe2O3 and Fe3O4, while the inner layer was dominated by Cr2O3.