研究了大气环境下AISI430铁素体不锈钢在950~1 050 ℃的高温氧化行为，采用热分析仪进行了恒温氧化试验，利用扫描电镜和能谱仪观察分析了氧化表面形貌和组成。结果表明：950 ℃下氧化比较缓慢，氧化增重较小，氧化表面致密平整；1 000 ℃以上氧化迅速，氧化增重显著增大，表面有大量的氧化铁突起；致密氧化层由八面体的铬锰尖晶石颗粒和近球形的氧化铬颗粒组成。
Abstract：The high temperature oxidation of the ferritic stainless steel type AISI430 over the temperature range of 950－1 050 ℃ was examined under atmospheric environment. The oxidation experiments were performed in a thermal analyzer Netzsch STA449C in the range of 950－1 050 ℃. The morphology and the composition of the oxide layer were analyzed by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). At 950 ℃, the oxidation is slower, the oxide film is continuous and compact, the oxide layer consists of the chromic oxide particles and the octahedral MnCr2O4 spinal particles. But above 1 000 ℃, the oxidation is increased significantly, the mass gains measured by thermogravimetry is great markedly, the morphology of oxide layer is different with that formed at 950 ℃, a mass of protuberance is observed on the oxidized surface, EDS analysis confirmed that the composition of protuberance is ferric oxide.
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