Effect of temperature on oxidation behavior of ternary Fe-15Cu-5Al alloy in pure oxygen
The effect of temperature on oxidation behavior of ternary Fe-15Cu-5Al (mole fraction,％) alloy in pure oxygen was studied.Fe-15Cu-5Al alloy presents an irregular high-temperature oxidation behavior between 700.1 000 ℃,though the kinetic curve at each temperature can be approximately considered as being composed of two quasi-parabolic stages.At 700 ℃ the alloy forms bulky stratified scales.On the contrary,at 800 ℃ the alloy forms an external protective Al2O3 layer.The trend of decrease of oxidation rate does not continue at elevated temperatures.Due to the high stress-growth effect at 900 ℃,the thin Al2O3 layer cannot completely prevent further oxidation of the alloy underneath.When the temperature rises to 1 000 ℃,the high stress-growth effect is more obvious and the alloy forms overgrown large nodules.Compared with the Fe-10Al binary alloy,the presence of 15 ％ Cu tends to greatly increase the flaw of the formed Al2O3 layer at elevated temperatures,resulting in a peculiar oxidation pattern of Fe-15Cu-5Al alloy.
Fe-15Cu-5Al oxidation behavior stress-growth
XIANG Jun-huai ZHAO Qiong ZHANG Wen-hua
Jiangxi Key Laboratory of Surface Engineering,Jiangxi Science and Technology Normal University,Nanch School of Materials Science and Engineering,Jiangxi Science and Technology Normal University,Nanchan
国际会议
2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)
长沙
英文
2007-11-28（万方平台首次上网日期，不代表论文的发表时间）