Investigation of mechanical properties and lead-bismuth eutectic corrosion resistance of Al2O3 coatings doped silicon

Yilong Zhong; Jian Yang; Wei Zhang; Juying Wu; Liqiu Yong; Ning Liu; Jijun Yang

Journal of Materials Research and Technology (May 2025)

Investigation of mechanical properties and lead-bismuth eutectic corrosion resistance of Al2O3 coatings doped silicon

Yilong Zhong,
Jian Yang,
Wei Zhang,
Juying Wu,
Liqiu Yong,
Ning Liu,
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
Jian Yang: 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
Juying Wu: 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
Ning Liu: Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China
Jijun Yang: Corresponding author. Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China.; Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu, 610064, China

Journal volume & issue: Vol. 36
pp. 9079 – 9090

Abstract

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Amorphous Al2O3 coatings doped with different Si contents on ferritic/martensite steel are successfully prepared by magnetron sputtering technology. The indentation, scratch, tribological tests, and lead-bismuth eutectic corrosion tests with various flow rates, oxygen concentration and temperatures were carried out on the coatings to estimate the application potential for lead-cool fast reactor. The results show that the coatings exhibit poorer toughness than the substrate, the degree of which deteriorates with increasing Si content, and are characterized by brittle fracture in mechanical tests. The Si-doped coatings effectively protect the substrate from LBE corrosion under most conditions and only crack at 650 °C. The causes of cracking are analyzed in detail, providing a case study for the corrosion-resistant coating research.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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