(中國科學院 金屬研究所 金屬腐蝕與防護國家重點實驗室，
沈陽 110016)
摘 要: 研究了表面粗糙度對Fecralloy (Fe-22Cr-5Al-0.3Y，質量分數(shù)，%)合金在1200℃空氣中循環(huán)氧化生成表面氧化膜完整性的影響。 采用SEM技術著重研究了合金表面氧化膜的性質和特點。結果表明合金表面粗糙度對Fecralloy合金表面氧化膜的完整性有重要的影響，初始 合金表面粗糙度越大，氧化膜越容易開裂。討論了合金表面粗糙度對氧化膜開裂行為的影響。
關鍵字: Fe-Cr-Al合金；表面粗糙度；循環(huán)氧化；SEM
oxide film integrity for Fecralloy alloy
（State Key Library for Corrosion and Protection，
Institute of Metals Research，Chinese Academy of Sciences，
Shenyang 110015, China）
Abstract:The effect of initial surface roughness on the oxide film integrity of Fecralloy(Fe-22Cr-5Al-0.3Y，mass fraction, %) after cyclic oxidization at 1200℃ in static air was studied. The characteristics of surface oxide was studied by SEM. It is shown that the initial surface roughness plays an important role in t he integrity of oxide. The higher the roughness of the initial alloy surface，the higher the cracking trend of the oxide film produced. The effect of alloy surf ace roughness on the oxide cracking behavior was discussed.
Key words: Fe-Cr-Al alloy；surface roughness；cyclic oxidation；SEM
