Study on LBE corrosion failure of FeAl/Al2O3 coatings after ion irradiation

Yilong Zhong; Wei Zhang; Jian Yang; Liqiu Yong; Qingyu Li; Yuntai Luo; Yi Zhou; Yuanjie Fu; Ning Liu; Xi Qiu; Jijun Yang

Materials & Design (Jun 2024)

Study on LBE corrosion failure of FeAl/Al2O3 coatings after ion irradiation

Yilong Zhong,
Wei Zhang,
Jian Yang,
Liqiu Yong,
Qingyu Li,
Yuntai Luo,
Yi Zhou,
Yuanjie Fu,
Ning Liu,
Xi Qiu,
Jijun Yang

Affiliations

Yilong Zhong: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Wei Zhang: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Jian Yang: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Liqiu Yong: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Qingyu Li: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Yuntai Luo: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Yi Zhou: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
Yuanjie Fu: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China
Ning Liu: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China
Xi Qiu: Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610213, China; Corresponding authors.
Jijun Yang: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China; Corresponding authors.

Journal volume & issue: Vol. 242
p. 113019

Abstract

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FeAl/Al2O3 coatings, candidate coating materials for lead-cooled fast reactors, are first irradiated to produce pre-defects and then subjected to lead-bismuth eutectic corrosion to simulate the performance in the coupled field of irradiation and corrosion. Irradiation causes voids in the outer Al2O3 layer resulting in irradiation swelling and causes lattice distortion and dislocations in the inner FeAl layer resulting in compressive strain and intercrystalline void expansion. The weakened coatings crack during corrosion and suffer from Pb, Bi, and O penetration, causing internal corrosion and oxidation. Beyond the cracked areas, the coatings demonstrate commendable corrosion resistance with minimal penetration. The irradiation-induced structural evolution and the subsequent lead-bismuth eutectic corrosion failure of the coatings are elucidated in detail.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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