Characterization of Oxide Scales on Super-Alloy HR120 at 1000 °C in Air and Steam Environments

被引：0
|
作者：
Ren, Xiumin [1 ]
Liang, Zhiyuan [2 ]
机构：
[1] Xijing Univ, Xian 710123, Shaanxi, Peoples R China
[2] Xi An Jiao Tong Univ, Xian 710049, Shaanxi, Peoples R China
来源：
6TH ANNUAL INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE AND ENVIRONMENTAL ENGINEERING | 2019年 / 472卷
关键词：
OXIDATION; PERFORMANCE;
D O I：
10.1088/1757-899X/472/1/012010
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Oxidation resistance of super-alloy HR120 in air and steam environments at 1000 degrees C was investigated. Scanning electric microscopy and X-ray diffraction analysis were used to characterize the corrosion products. The results show that weight gain in steam was much higher than that in air. Oxide scales formed in air were MnCr2O4 and Cr2O3, whereas oxides developed in steam were NiFe2O4, (Cr, Fe)(2)O-3 and little internal Cr-Si oxides. Steam can increase the corrosion rate and fine the oxides formed on the sample's surface. Moreover, enhanced oxidation of HR120 in steam was mainly attributed to the evaporation of chromium oxyhydroxides.
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页数：5
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