Microstructural evolution of the Cr/FeCrAl coated Zircaloy-4 under simulated PWR and high-temperature steam oxidation environments

被引：4

作者：

Zhu, Pengzhou ^{[1
]}

Ruan, Haibo ^{[2
]}

Huang, Weijiu ^{[1
,2
]}

Zhang, Tengfei ^{[2
]}

Sun, Lidong ^{[1
]}

Ning, Yi ^{[3
]}

Xu, Meng ^{[3
]}

Liao, Haiyan ^{[4
]}

Wang, Junjun ^{[3
]}

Su, Yongyao ^{[2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ Arts & Sci, Coll Mat Sci & Engn, Chongqing 402160, Peoples R China

[3] Chongqing Univ Technol, Coll Mat Sci & Engn, Chongqing 400054, Peoples R China

[4] Kunming Univ Sci & Technol, Coll Mat Sci & Engn, Kunming 650093, Peoples R China

来源：

JOURNAL OF NUCLEAR MATERIALS | 2024年 / 600卷

基金：

中国国家自然科学基金;

关键词：

Cr/FeCrAl coating; Zircaloy-4; Barrier layer; Corrosion resistance; High -temperature steam; Oxidation resistance; THERMAL-EXPANSION; FE; BEHAVIOR; ALLOY; STABILITY; CORROSION; COATINGS; SURFACE; PHASES; METAL;

D O I：

10.1016/j.jnucmat.2024.155266

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A dual-layer Cr/FeCrAl coating was deposited on zircaloy-4 using magnetron sputtering, and its corrosion performance was investigated under simulated pressurized water reactor (PWR) and high-temperature steam environments. Despite experiencing weight loss in high-temperature and high-pressure water (360 degrees C/18.6 MPa), the coating developed a durable Fe/Cr composite oxide layer on its surface, effectively mitigating corrosion. In high-temperature steam conditions, a continuous Al2O3 coating formed, providing protection up to 1200 degrees C for 30 min. Microstructure analysis unveiled the formation of Zr (Fe, Cr)2 layer, which played a crucial role in preventing Fe indiffusion and the formation of Fe-Zr low melting point eutectic. These findings provide valuable insights into enhancing the corrosion and oxidation resistance of zirconium alloy cladding in extreme environments.

引用

页数：15

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