Influence of Surface State on the Corrosion Behavior of Si-Reinforced F/M Steels under Solid-Phase Oxygen-Controlled Static Liquid LBE Environment

Since F/M steel is one of the leading candidate materials for the lead-cooled fast reactor (LFR), its compatibility with the liquid LBE environment is an essential issue before application. One major way to improve LBE corrosion resistance is to control the oxygen concertation in liquid LBE for the...

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Bibliographic Details
Published in:Metals (Basel ) 2024-07, Vol.14 (7), p.810
Main Authors: Liu, Yuchen, Qin, Bo, Fu, Xiaogang, Long, Bin
Format: Article
Language:English
Subjects:
corrosion behavior
Corrosion environments
Corrosion prevention
Corrosion rate
Corrosion resistance
Corrosion resistant steels
Corrosion tests
liquid LBE
Materials selection
Mechanical properties
Oxygen
Protective structures
R&D
Research & development
Si-reinforced F/M steel
Solid phases
solid-phase oxygen control
Stainless steel
surface state
Temperature
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Summary:Since F/M steel is one of the leading candidate materials for the lead-cooled fast reactor (LFR), its compatibility with the liquid LBE environment is an essential issue before application. One major way to improve LBE corrosion resistance is to control the oxygen concertation in liquid LBE for the growth of a stable, protective oxide layer on the surface of the structure material. However, the influence of the surface state on corrosion behavior is a more realistic issue when it comes to practical applications. In this study, the corrosion behavior of Si-reinforced 9Cr and 11Cr F/M steels with different surface states was investigated by a static liquid LBE corrosion test under solid-phase oxygen-controlled conditions. The result showed that at 550 °C, the coarse surface state caused dissolution behavior at the initial stage of corrosion, while the fine surface state formed the oxide layer. Moreover, at 610 °C, Si-reinforced 11Cr F/M steel shows better liquid LBE corrosion resistance due to its thinner oxide layer formation.
ISSN:2075-4701
2075-4701
DOI:10.3390/met14070810