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探究了钛元素对ＦｅＡｌ金属间化合物在１０００℃和１１００℃大气环境下的循环氧化行为的影响。合金的氧化动力学过程通过增重法测定，氧化产物通过Ｘ射线衍射、能谱和扫描电镜等鉴定。实验结果表明，加钛和未加钛Ｆｅ－３６．５Ａｌ合金的氧化动力学曲线均可拟合为抛物线：（ΔＷ／Ｓ）２＝Ｋｐｔ＋Ｃ。加钛ＦｅＡｌ合金在１０００℃和１１００℃时的Ｋｐ值分别为２．４，３．３ｍｇ２ｃｍ－４ｈ－１；而未加钛ＦｅＡｌ合金在１０００℃和１１００℃时的Ｋｐ值分别为１．３，２．０ｍｇ２ｃｍ－４ｈ－１。两种合金的表面氧化层有所不同，其中加钛ＦｅＡｌ合金的表面氧化物不仅有Ａｌ２Ｏ３，而且还有ＴｉＯ。研究表明，钛元素对ＦｅＡｌ合金抗氧化性能的作用来自合金表面ＴｉＯ的形成以及剥落层与基体粘合力的提高。
The effect of titanium on the cyclic oxidation behavior of FeAl intermetallics at 1000 ℃ and 1100 ℃ was investigated. The oxidation kinetics of the alloy was determined by the weight gain method. The oxidation products were identified by X-ray diffraction, energy dispersive spectroscopy and scanning electron microscopy. The experimental results show that the oxidation kinetics curve of Fe-36.5Al alloy with or without titanium can be fitted as a parabola: (ΔW / S) 2 = Kpt + C. The Kp values of titanium-added FeAl alloy at 1000 ℃ and 1100 ℃ were 2.4 and 3.3mg2cm-4h-1, respectively. The Kp values of the untreated FeAl alloy at 1000 ℃ and 1100 ℃ were 1.3, 2.0mg2cm-4h-1. The surface oxide layers of the two alloys are different, in which the surface oxides of the titanium-added FeAl alloy have not only Al 2 O 3 but also TiO. The results show that the effect of titanium on the oxidation resistance of FeAl alloy comes from the formation of TiO on the alloy surface and the improvement of the adhesion between the peeling layer and the substrate.