Corrosion behavior of eutectic high-entropy alloys in supercritical CO2 environments

被引：0
|
作者：
Yang, Wanhuan [1 ]
Zhao, Xueli [1 ]
Zou, Jichun [1 ,2 ]
Wang, Wenqin [2 ]
Liu, Qi [3 ]
Yang, Wen [1 ]
Li, Shen [2 ]
Zhong, Weihua [1 ]
机构：
[1] China Inst Atom Energy, Div Reactor Engn Technol Res, Beijing 102413, Peoples R China
[2] Nanchang Univ, Sch Adv Mfg, Nanchang 330031, Peoples R China
[3] Hunan Univ, Coll Mat Sci & Engn, Changsha 413000, Hunan, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2024年 / 29卷
关键词：
Supercritical CO 2; Eutectic high -entropy alloy; Passive layer; Corrosion resistance; STEELS; CR;
D O I：
10.1016/j.jmrt.2024.02.195
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study explores the corrosion resistance of AlCoCrFeNi2.1 eutectic high -entropy alloy (EHEA) in supercritical CO2 (S-CO2). The corrosion behavior was meticulously examined under conditions of 500 degrees C and 25 MPa CO2 over a duration of 800 h. The formation of distinct passivation layers on the face -centered cubic (FCC) and bodycentered cubic (BCC) B2 phases was observed, leading to a cooperative passivation effect of Al and Cr. The protective Al2O3 oxide layers, which were dense and continuous, played a crucial role in inhibiting carburization and further oxidation, thereby significantly enhancing the corrosion resistance. Interestingly, no carburization was observed in this study.
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页码：4931 / 4940
页数：10
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