摘要
采用一种测定氧化膜生长应力的双面氧化弯曲方法，测量了Ｆｅ－２３Ｃｒ－５Ａｌ（Ｆｅ－２２．６Ｃｒ－．４２Ａｌ－０．２１Ｔｉ，ｗｔ％）合金在１０００＾０Ｃ空气中氧化形成的Ａｌ２Ｏ３膜的平均生长应力，研究了氧化膜应力释放机制，Ａｌ２Ｏ３膜的平均生长应力随膜厚增大而减小，其大小从－１ＧＰａ数量级变化到－１００ＭＰａ数量级。基体全金和Ａｌ２Ｏ３膜在１０００＾０Ｃ时均发生蠕变。
The average growth stresses in Al2O3 scales formed on Fe－23Cr－5Al alloy during oxidation at 1000℃in air have been measured by using a new deflection technique. The relaxation of oxide stress has also been studied. The average growth Stresses in Al2O3 scales decreased with thickening of the scales， their values were over the range of －1000～－100MPa. The stresses in the substrate alloy were much lower， in the order of 1MPa. Both the substrate alloy and alumina scales might creep at 1000℃. During the annealing of the oxidized specimen， the rate of the stress decrease with time was 6.9～18.4 times higher for the scale of 0.039μm than that for the scale of 0.30μm.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1999年第3期137-143,共7页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金!59701010
关键词
生长应力
弯曲实验
氧化
氧化铝膜
Growth stress， Deflection test， Creep analysis， Alumina scale
