贾金容, 高素臻，隗健, 刘乐，张田，王雪梅，赵引峰，韩培刚，张建旗
（内蒙古科技大学 材料与冶金学院，内蒙古 包头014010）
关键词：Al88Ce8Fe4；非晶；高温氧化；耐蚀性
中图分类号：TG178 文献标识码：A
摘 要：非晶合金Al-Ce-Fe在550℃下进行高温氧化，通过XRD、SEM对Al-Ce-Fe氧化表面形貌、晶化、成分进行研究，对氧化试样的横截面进行显微硬度测量，通过动电位极化扫描测试氧化膜的电化学耐蚀性。实验表明，非晶合金Al-Ce-Fe在550℃高温氧化后氧化膜成分为晶体的Fe2O3、AlFeO3和Al(OH)3。显微硬度随着保温时间延长呈现先增后减的趋势。电化学极化测试结果表明随氧化时间增长，氧化膜抗蚀性下降，其中氧化300 min氧化膜的腐蚀电流密度为4.74E-6A/cm²，氧化600 min后Icorr为2.16E-5A/cm²。
Oxidation and corrosion behavior of Al88Ce8Fe4 amorphous alloy at 550℃
JIA Jin-rong, GAO Su-zhen, WEI Jian, Liu Le, ZHANG Tian, WANG Xue-mei, ZHAO Yin-feng,
HAN Pei-gang, ZHANG Jian-qi
（Material and Metallurgy School，Inner Mongolia University of Science and Technology，Baotou 014010，China)
Key words:Al88Ce8Fe4;Amorphous;high temperature oxidation;Corrosion resistance
Abstract:Al-Ce-Fe amorphous alloy was oxidized at 550℃. The oxidized films were characterized by XRD and SEM, and the hardness of the oxidized alloys was measured. The electrochemical behavior of the oxide films was investigated by dynamic polarization technique. The results show that a crystalline oxide film consisting ofFe2O3, AlFeO3 and Al (OH) 3 was formed on the alloys surface after high temperature oxidation. The hardness of the alloy initially increased and then decreased with oxidation time. The corrosion resistance of the oxide film decreased with oxidation time, and corrosion current densities of 4.74 E-6 A/cm2 and 2.16 E-5 A/cm2 were measured on the oxide films of the alloys after oxidation for 300 and 600 minutes, respectively.