(中国科学院 金属研究所 金属腐蚀与防护国家重点实验室，
沈阳 110016)
摘 要: 研究了表面粗糙度对Fecralloy (Fe-22Cr-5Al-0.3Y，质量分数，%)合金在1200℃空气中循环氧化生成表面氧化膜完整性的影响。 采用SEM技术着重研究了合金表面氧化膜的性质和特点。结果表明合金表面粗糙度对Fecralloy合金表面氧化膜的完整性有重要的影响，初始 合金表面粗糙度越大，氧化膜越容易开裂。讨论了合金表面粗糙度对氧化膜开裂行为的影响。
关键字: Fe-Cr-Al合金；表面粗糙度；循环氧化；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
