Microstructure of FeCrAl Thin Film Composed of Nanocrystals Deposited on Zr Alloy and Their Corrosion Behavior Under Water Steam Atmosphere

Yong Cui; Zhiyuan Liang; Gang Wang; Changji Li; Jing Li; Liangyin Xiong; Shi Liu

doi:10.1166/jnn.2019.15896

Microstructure of FeCrAl Thin Film Composed of Nanocrystals Deposited on Zr Alloy and Their Corrosion Behavior Under Water Steam Atmosphere

J Nanosci Nanotechnol. 2019 May 1;19(5):2732-2737. doi: 10.1166/jnn.2019.15896.

Authors

Yong Cui¹, Zhiyuan Liang², Gang Wang³, Changji Li⁴, Jing Li¹, Liangyin Xiong¹, Shi Liu¹

Affiliations

¹ Division of Materials for Special Environments, Key Laboratory of Nuclear Materials and Safety Assessment, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
² Key Laboratory of Thermal Fluid Science and Engineering of Ministry of Education, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
³ State Key Laboratory of Rare Earth Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
⁴ Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.

PMID: 30501773
DOI: 10.1166/jnn.2019.15896

Abstract

Zr alloy cladding materials is the core component of the nuclear reactor, the safety of cladding materials is very important. Zr alloy cladding materials is inclined to react with water under high temperature. The products are ZrO₂ and H₂. The mechanical property of Zr alloy decreases promptly. In order to protect Zr alloy from high temperature water, FeCrAl thin film layer was deposited on Zr alloy surface. The structure, chemical composition, surface elemental valence and morphology of FeCrAl thin film layer were carefully investigated by XRD, EDS, XPS, and SEM. After the test of corrosion experiment, deposition of FeCrAl thin film layer on Zr alloy surface showed the better corrosion property than Zr alloy under high temperature water steam atmosphere. The corrosion rate of Zr alloy with deposited FeCrAl thin film was 1.5 times lower than that of Zr alloy. The deposition of FeCrAl thin film layer on Zr alloy is an efficient approach to improve the corrosion property.