Fe-Cr-Al电热合金的高温氧化行为  

High-temperature oxidation behavior of Fe-Cr-Al electrothermal alloy

作　　者：刘威 邵兴明 季勇华 许万剑 陈杰 王树平 Liu Wei;Shao Xinming;Ji Yonghua;Xu Wanjian;Chen Jie;Wang Shuping(School of Materials Science and Engineering,Shanghai University,Shanghai 200444,China;Jiangsu Xinhua Alloy Co.,Ltd.,Taizhou Jiangsu 225722,China)

机构地区：[1]上海大学材料科学与工程学院,上海200444 [2]江苏新华合金有限公司,江苏泰州225722

出　　处：《金属热处理》2021年第4期60-65,共6页Heat Treatment of Metals

摘　　要：对一种Fe-Cr-Al系电热合金0Cr_(2)5Al5进行了不同温度(950、1050、1150℃)的氧化质量增加试验。结果表明,合金试样在950℃下属于完全抗氧化级,在1050℃下属于抗氧化级,在1150℃下保温40 h以上时,由于Cr_(2)O_(3)的氧化挥发导致氧化膜出现空洞,大大降低了合金的抗氧化性能。XRD物相分析表明合金表面氧化膜主要由TiO_(2)、Al2O_(3)和FeCr_(2)O_(4)组成。Oxidation mass gain test was conducted for Fe-Cr-Al electrothermal alloy 0Cr_(2)5Al5 at 950,1050 and 1150℃,respectively.The results show that the alloy belongs to the complete oxidation resistance class at 950℃and oxidation resistance class at 1050℃.When oxidized at 1150℃for more than 40 h,the oxidation resistance of the alloy is greatly reduced because of the voids appear in the oxide film of the alloy due to the evaporation of Cr_(2)O_(3).The XRD analysis result shows that the oxide film on the alloy surface is mainly composed of TiO_(2),Al2O_(3)and FeCr_(2)O_(4).

关 键 词：Fe-Cr-Al电热合金 高温氧化 氧化动力学 氧化物组成 

分 类 号：TG142.71[一般工业技术—材料科学与工程]