A comparative study on liquid metal embrittlement susceptibility of three FeCrAl ferritic alloys in contact with liquid lead-bismuth eutectic at 350°C

Gong, Xing; Chen, Jiajun; Xiang, Congying; Yu, Zhiyang; Gong, H.R.; Yin, Yuan

doi:10.1016/j.corsci.2021.109346

Cited by 25 publications

(5 citation statements)

References 58 publications

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“…The most commonly applied cleaning lotion of lead-bismuth alloy consists of three components, including an oxidant (hydrogen peroxide, H 2 O 2 , 30% aqueous solution), an acid (concentrated acetic acid, CH 3 COOH, > 96% aqueous solution), and a solvent (ultrapure water or ethanol), typically with a volume ratio of 1:1:1, and the cleaning process should be performed normally at room temperature. This cleaning method defined by Schroer ( 2015) is adopted as a standard procedure by many research groups in their routine laboratory applications (Fazio et al, 2003;Ejenstam et al, 2013;Shi et al, 2019;Gong et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Cleaning Effect and Influence Rule of Hydrogen Peroxide–Acetic Acid on Lead–Bismuth Eutectic Alloy

et al. 2021

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During the refueling process of lead–bismuth eutectic (LBE)–cooled fast reactors, lead–bismuth alloy can easily adhere to the surface of the fuel rod clads when spent fuel assemblies are unloaded from the reactor core. For some designs, the lead–bismuth alloy attached on the spent fuel rods will be cleaned via physical or/and chemical methods prior to their transportation, storage, and reprocessing. In this article, the cleaning effect of a washing lotion composed of hydrogen peroxide (H2O2) aqueous solution and concentrated acetic acid (CH3COOH) as the main components on LBE was experimentally investigated. By adjusting the composition ratio of the washing lotion and the reaction temperature, the law of their influence on the cleaning effect of LBE was determined. The optimal washing lotion composed of 30 Vol% hydrogen peroxide aqueous solution as oxidant, 40 Vol% concentrated acetic acid as acid, and 30 Vol% ultrapure water as the solvent was proposed based on experimental investigations. The optimal working temperature range was also obtained. The reaction intermediate product was characterized with the XRD analysis in order to understand the reaction mechanism. The composition of the released gas (even in a slight amount) was also analyzed with gas chromatography. The hydrogen concentration in the released gas was found to be lower than the detection limit of gas chromatography (10 ppm). Since the explosion limits of hydrogen at atmospheric pressure are between 3.95 and 75.73 Vol%, the risk of possible hydrogen explosion is concluded to be extremely low. Therefore, no special treatment of the released gas is required even in a large-scale industrial platform. Furthermore, corrosion effect of the washing lotion on austenitic stainless steel components was tested as well and found to be negligibly small. The relative mass loss of the thin-walled stainless steel samples immersed in the washing lotion was found to be less than 0.5% after an experimental duration of 144 h, which facilitates sufficient cleaning time in future industrial applications.

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Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Cleaning Effect and Influence Rule of Hydrogen Peroxide–Acetic Acid on Lead–Bismuth Eutectic Alloy

et al. 2021

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“…5.4), irrespective of the HLM oxygen concentration and applied strain rate during testing [562]. An increase in Al content can make FeCrAl more susceptible to LME than an increase in Cr content [621]. The strong LME effect in FeCrAl alloys was attributed to Al-induced solid solution strengthening and the probably more brittle nature of the Al-enriched oxides, while the ductility of the Fe10Cr4Al alloy in LBE recovered fully at 500 • C [622].…”

Section: Elemental Alloying Of Steelsmentioning

confidence: 92%

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

Gong

Short

Auger

et al. 2022

Progress in Materials Science

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160

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“…[11][12][13][14][15][16][17] In order to ensure sufficient corrosion resistance of iron-based materials during expected service lifetime, active oxygen control to promote and maintain a protective film is a method developed to mitigate liquid metal corrosion of iron-based materials. It has been elucidated [18] that a passive film on steel surface can effectively prevent the liquid metal embrittlement (LME). Moreover, a passive film is also of great significance to act as diffusion barriers against the dissolution of structural elements into liquid LBE and liquid LBE penetration into a metal substrate.…”

Section: Introductionmentioning

confidence: 99%

Atomistic insights into early stage corrosion of bcc Fe surfaces in oxygen dissolved liquid lead-bismuth eutectic (LBE-O)

Zhou¹,

Gao²,

Ma³

et al. 2023

Chinese Phys. B

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Classical molecular dynamics simulations with global neural network machine learning potential have been used to study early-stage oxidation and dissolution behaviors of bcc Fe surfaces contacting with stagnant oxygen dissolved liquid lead-bismuth eutectic (LBE-O). Both static and dynamic simulation results indicate that the early-stage oxidation and dissolution behaviors of bcc Fe show strong orientation dependence under the liquid LBE environments, which may explain experimental observations of uneven interface between iron-based materials and liquid LBE. Our investigations show that it is the delicate balance between the oxide growth and metal dissolution that leads to the observed corrosion anisotropy for bcc Fe contacting with liquid LBE-O.

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A comparative study on liquid metal embrittlement susceptibility of three FeCrAl ferritic alloys in contact with liquid lead-bismuth eutectic at 350°C

Cited by 25 publications

References 58 publications

Experimental Investigation on the Cleaning Effect and Influence Rule of Hydrogen Peroxide–Acetic Acid on Lead–Bismuth Eutectic Alloy

Experimental Investigation on the Cleaning Effect and Influence Rule of Hydrogen Peroxide–Acetic Acid on Lead–Bismuth Eutectic Alloy

Environmental degradation of structural materials in liquid lead- and lead-bismuth eutectic-cooled reactors

Atomistic insights into early stage corrosion of bcc Fe surfaces in oxygen dissolved liquid lead-bismuth eutectic (LBE-O)

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