Corrosion of nickel-based structural materials for nuclear reactors by molten fluoride salt: From bulk content of corrosion products to elemental imaging of corrosion changes

Warchilová, Tereza; Dillingerová, Veronika; Škoda, Radek; Šimo, Tomáš; Matal, Oldřich; Vaculovič, Tomáš; Kanický, Viktor

doi:10.1016/j.sab.2018.06.010

Cited by 11 publications

(4 citation statements)

References 19 publications

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“…The present paper focused on the study of the corrosion behavior [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49] of the FeCr-NiTi, NiCrMo, and NiCu alloys during long-term corrosion tests in the high-temperature aggressive alkali fluorides containing cerium trifluoride and neodymium trifluoride as imitators of the nuclear fuel fission products (uranium and plutonium fluorides).…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Candidate Functional Materials for Molten Salts Reactors in LiF–NaF–KF Containing Actinide Fluoride Imitators

et al. 2022

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Molten fluorides of alkali metals are considered a technological medium for molten salt reactors (MSRs). However, these media are known to be extremely corrosive. The successful implementation of high-temperature technological devices using molten alkali metal fluorides requires the selection of such structural materials that have high corrosion resistance in melts with compositional characteristic of MSRs. In this research, the corrosion behavior of 12Cr18Ni10Ti steel, the alloy Ni60Cr20Mo15, and the alloy Monel 404 (Ni50Cu50) was investigated in the LiF–NaF–KF eutectic melt, containing additions of CeF3 and NdF3 from 0 to 5 wt.% as imitator fluorides of actinides in an inert argon atmosphere at 550 °C for 100 h. Gravimetry, energy-dispersive X-ray (EDX) microanalysis of surfaces and cross-section of samples, and ICP-MS were used to establish the corrosion behavior of the investigated alloys. Corrosion resistance of the studied materials was found to decrease in a row from Monel 404 > Hastelloy C2000 > 12Cr18Ni10Ti. The addition of cerium fluoride into the melt resulted in the additional etching of the alloy surface. The addition of neodymium fluoride resulted in the formation of the point/inter-crystalline corrosion damages in the sample bulk. The samples of steel 12Cr18Ni10Ti were subjected to local cracking corrosion. The austenitic nickel-based alloys suffered specific local corrosion with formation of subsurface voids. Excellent corrosion resistance of the Monel alloy under the test conditions was found.

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Section: Introductionmentioning

confidence: 99%

Corrosion Behavior of Candidate Functional Materials for Molten Salts Reactors in LiF–NaF–KF Containing Actinide Fluoride Imitators

et al. 2022

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“…To demonstrate the usefulness of Ilaps application a range of samples were analysed, such as bulk analysis of archaeological samples, 18,19 imaging of platinum in tumour tissue of a mouse 20 and other biological samples, [21][22][23] geological samples 24,25 or imaging of the corrosion of Ni-based alloy. 26 In addition to Ilaps being used for many transdisciplinary collaborations, it also offers a way to easily handle data from other instruments, such as laser-induced breakdown spectroscopy (LIBS), 27 just by simple conversion of raw data to t the importing format. This allows an easy comparison of elemental imaging by different methods.…”

Section: Introductionmentioning

confidence: 99%

Ilaps – python software for data reduction and imaging with LA-ICP-MS

Faltusová

Vaculovič

Holá

et al. 2022

J. Anal. At. Spectrom.

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“…Inconel 600 is a nickel-based alloy with high temperature stability, good corrosion resistance, and high pressure resistance that is often used to make heat transfer tubes for steam generators in nuclear power plants. [1][2][3][4][5] Numerous corrosion products and dirt accumulated inside pipelines affect the heat exchange performance of the pipeline and cause pipeline corrosion leakage, resulting in equipment accidents and economic losses. Pipelines must be regularly cleaned to prevent these hazards.…”

Section: Introductionmentioning

confidence: 99%

Digital Holography Study of the Inhibitory Effects of Polyaspartic Acid on the Anodic Dissolution of Inconel<sup>®</sup> 600

Yuan

et al. 2021

Electrochemistry

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Electrochemical methods were used in conjunction with digital holography to study the effects of an environmentally friendly inhibitor, polyaspartic acid (PASP), on the anodic dissolution of Inconel 600 in a 0.04 M HCl solution. The pitting inhibition ability was enhanced and the inhibition efficiency increased with the PASP concentration, reaching 84.13% at 6.66 g L-1 PASP. A digital holograph was used to observe the in situ hydrolysis of M 2+ (M=Ni and Fe) near the electrode surface during anodic dissolution and showed the formation of a surface film on the electrode. The inhibitory effects of PASP on Inconel 600 may be caused by the adsorption of PASP and the formation of a PASP metal complex (PASP-M complex), which may seal defects in the surface film.

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Corrosion of nickel-based structural materials for nuclear reactors by molten fluoride salt: From bulk content of corrosion products to elemental imaging of corrosion changes

Cited by 11 publications

References 19 publications

Corrosion Behavior of Candidate Functional Materials for Molten Salts Reactors in LiF–NaF–KF Containing Actinide Fluoride Imitators

Corrosion Behavior of Candidate Functional Materials for Molten Salts Reactors in LiF–NaF–KF Containing Actinide Fluoride Imitators

Ilaps – python software for data reduction and imaging with LA-ICP-MS

Digital Holography Study of the Inhibitory Effects of Polyaspartic Acid on the Anodic Dissolution of Inconel<sup>®</sup> 600

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