【摘要】 研究了SUS430合金在模拟SOFC阳极气氛下高温氧化(750℃和850℃)500 h的氧化动力学及其表面氧化膜的形貌。利用SEM、EDS及XRD,分析了样品氧化膜的形貌、成分及晶体结构。在不同的氧化温度下,样品氧化动力学都具有阶段氧化特性;每一阶段都具有不同的Kp,都遵循Wagnar抛物线定律。在所有氧化膜中,Cr2O3为主要氧化产物,并都存在MnCr2O4尖晶石。当在850℃下氧化时,FeO也是主要的氧化产物,并有一定量的Fe分布于其中。更多还原

【Abstract】 The kinetics and the oxide scale morphology of SUS430 alloy high temperature（750 ℃ and 850 ℃） oxidized in simulated SOFC anode atmosphere for 500 h were investigated.The morphology,composition and crystal structure of the oxide scales of the samples were characterized by using SEM,EDS and XRD.Multi-stage oxidation kinetics was observed at different oxidation temperature,each stage followed Wagnar’s parabolic law with different K_p.Cr₂O₃ was the main oxidation product in all oxide scale and MnCr₂O₄ spinel was also detected.FeO was also the main oxidation product with some dissolved Fe in the oxide scale when oxidation at 850 ℃.更多还原