Effect of dynamic conditions on high-temperature corrosion of ternary carbonate salt for thermal energy storage applications

González-Fernández, Luis; Intxaurtieta-Carcedo, Mikel; Bondarchuk, Oleksandr; Grosu, Yaroslav

doi:10.1016/j.solmat.2022.111666

Cited by 18 publications

(3 citation statements)

References 39 publications

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“…Their content is equivalent in both cases taking into account the experimental uncertainty. An extension of this work with further analyses has been published in ref [15].…”

Section: Resultsmentioning

confidence: 94%

Dynamic Corrosion of Carbonate Salt for 3rd Generation CSP Plants

González-Fernández,

Intxaurtieta Carcedo,

Bondarchuk

et al. 2024

SolarPACES Conf Proc

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Eutectic ternary carbonate salt is one of the candidates for 3rd generation concentrated solar power (CSP) plants. Gen3 CSP targets higher operation temperatures, which strengthens the corrosivity issues associated to molten salts. Although there are corrosion studies for this carbonate salt in static conditions, the effect of salt flow is not fully understood. In this work, corrosion experiments under static and dynamic conditions are compared for SS310 subjected to ternary carbonate salt at 600ºC. The corrosion layer formed during static and dynamic tests were completely characterized by means of SEM-EDX and XRD (surface and cross-section). The corrosion products deposited in the salt during the experiment were analyzed by ICP-OES. The tests performed under dynamic conditions demonstrated an increase spallation of the corrosion layer. This spallation produced a thinner scale and exposed the Cr containing phase to the molten salt, fostering its dissolution. These results confirmed the significant effect of dynamic conditions on the corrosivity of eutectic ternary carbonate salt and the importance of assessing them in the design of 3rd generation CSP plants.

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“…Their content is equivalent in both cases taking into account the experimental uncertainty. An extension of this work with further analyses has been published in ref [15].…”

Section: Resultsmentioning

confidence: 94%

Dynamic Corrosion of Carbonate Salt for 3rd Generation CSP Plants

González-Fernández,

Intxaurtieta Carcedo,

Bondarchuk

et al. 2024

SolarPACES Conf Proc

Self Cite

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“…The mapping of the authors performed using VOSviewer (Figure 9) shows distinctive clusters grouping authors within the same institution. Figure 9b shows that the authors from University Complutense de Madrid together with A.G. Fernández (originally also from this institution) are those who started to publish on this topic earlier, whereas the authors that are now at or were associated in the past with CIC energiGUNE are those who started to publish on the topic later [53][54][55][56][57][58][59][60]62].…”

Section: Resultsmentioning

confidence: 99%

Bibliometric Map on Corrosion in Concentrating Solar Power Plants

2022

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Concentrating solar power (CSP), also known as solar thermal electricity (STE), is increasing its deployment worldwide. One of the potential ways to decrease costs in CSP plants is the improvement of corrosion resistance between the heat transfer fluid (HTF) and storage materials, and the materials used for pipes, tanks, containers, and receivers. This paper assesses the literature on this topic (290 publications) through a bibliometric analysis, identifying the trends of the research, the topics of most interest to researchers, and literature gaps. Most documents are from Spain, Germany, and the United States of America. Results show that the most recent approaches for corrosion migration are selective coatings and the use of nanoparticles to reduce corrosiveness. The use of nitrates is changing to other salts such as chloride mixtures and potassium compounds. In addition, the techniques used to evaluate corrosion results are dominated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and electrochemical testing, but new dynamic techniques are starting to be used, representing the biggest gap that needs to be filled for the testing of components such as solar receivers.

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“…The XRD patterns of the 316L stainless steel tested under LiNaKCO 3 molten salts at 650 and 700 • C revealed that at both temperatures, the corrosion products formed on the samples' surfaces were LiFeO 2 , LiCrO 2 , and Fe 3 O 4 . These were the main corrosion products, and Luo et al [40] also identified these peaks when they studied the corrosion of the same stainless steel by LiNaK carbonate molten salt at 600 and 700 • C. González-Fernández et al [41] analyzed the corrosion products formed in 310 ss (24.9% Cr) at 600 • C for a longer exposure time (600 h) in dynamic conditions and also found the presence of Fe 3 O 4 , LiCrO 2 , and Li(Fe,Ni)O 2 as the main corrosion products. This means that the short exposure time was enough to produce the lithiation reaction of the grown oxides.…”

Section: Xrd Characterizationmentioning

confidence: 97%

Effect of Molten Salts Composition on the Corrosion Behavior of Additively Manufactured 316L Stainless Steel for Concentrating Solar Power

Abu-warda,

García-Rodríguez,

Torres

et al. 2024

Metals

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The effects of different molten salts on the corrosion resistance of laser powder bed fusion (L-PBF) 316L stainless steel was evaluated at 650 and 700 °C. The samples were characterized via XRD and SEM/EDX after high-temperature corrosion tests to evaluate the corrosion damage to the L-PBF 316L stainless steel caused by the molten salts. The presence of the salts accelerated the corrosion process, the chloride-based salts being the most aggressive ones, followed by the carbonate-based and the nitrate/nitrite-based salts, respectively. The L-PBF 316L did not react strongly with the nitrate/nitrite-based salts, but some corrosion products not found in the samples tested in the absence of salts, such as NaFeO2, were formed. LiFeO2 and LiCrO2 were identified as the main corrosion products in the samples exposed to the carbonate-based molten salts, due to the high activity of Li ions. Their growth produced the depletion of Fe and Cr elements and the formation of vacancies that acted as diffusion paths on the surface of the steel. In the samples exposed to chloride-based molten salts, the attacked area was much deeper, and the corrosion process followed an active oxidation mechanism in which a chlorine cycle is assumed to have been involved.

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Effect of dynamic conditions on high-temperature corrosion of ternary carbonate salt for thermal energy storage applications

Cited by 18 publications

References 39 publications

Dynamic Corrosion of Carbonate Salt for 3rd Generation CSP Plants

Dynamic Corrosion of Carbonate Salt for 3rd Generation CSP Plants

Bibliometric Map on Corrosion in Concentrating Solar Power Plants

Effect of Molten Salts Composition on the Corrosion Behavior of Additively Manufactured 316L Stainless Steel for Concentrating Solar Power

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