Development of a microfluidic setup to study the corrosion product deposition in accelerated flow regions

McGrady, John; Duff, Jonathan; Stevens, Nicholas; Cioncolini, Andrea; Curioni, Michele; Banks, Andrew; Scenini, Fabio

doi:10.1038/s41529-017-0022-1

Cited by 19 publications

(11 citation statements)

References 25 publications

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“…This trend was clearly observed in the dissolution of the Cr oxide layer on the specimens. It was assumed that the Cr oxide layer is under the iron oxide layer although it was not characterized in the XRD-patterns in Figure 3 [3,4]. This means that the Cr oxide dissolution can be lowered during the first cycle because the iron oxide layer was inhibiting the solution contacting the Cr oxide layer, as shown in Figure 7.…”

Section: Fe 2+ + H2o2 + H + = Fe 3+ + ▪Oh + H2omentioning

confidence: 99%

“…A corrosion oxide layer containing radioactive nuclides is deposited in the RCS (reactor coolant system) in a nuclear facility operated at a high temperature and a high pressure [1][2][3][4]. This corrosion oxide layer generates radiation build-up, and this can increase the risk of radiation exposure to workers [3][4][5][6]. It thus must be removed from the RCS.…”

Section: Introductionmentioning

confidence: 99%

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Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process

et al. 2021

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It is very important to minimize the waste generation for decontamination of the reactor coolant system in a nuclear facility. As an alternative to commercial decontamination technologies, an inorganic acid chemical decontamination (SP-HyBRID) process can be effectively applied to the decontamination because it can significantly reduce the waste generation. In this study, the decontamination of a contaminated reactor coolant pump shaft from a nuclear facility was conducted using the SP-HyBRID process. First, equipment for a mock-up test of the decontamination was prepared. Detailed experimental conditions for the decontamination were determined through the mock-up test. Under the detailed conditions, the contaminated shaft was successfully decontaminated. The dose rate on the shaft surface was greatly reduced from 1400 to 0.9 μSv/h, and the decontamination factor showed a very high value (>1500).

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Section: Fe 2+ + H2o2 + H + = Fe 3+ + ▪Oh + H2omentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process

et al. 2021

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“…Interactions at the solid–liquid interface have been used in a wide variety of technologies. The application ranges from heterogeneous catalysis, electrochemistry, , corrosion engineering, and fuel cell design , to the biological sensor design, solar energy conversion, and so forth. The aforementioned applications get immensely benefited from the simple yet elegant physics of liquid and solid interactions.…”

Section: Introductionmentioning

confidence: 99%

Molecular Insights into the Effect of Crystal Planes on Droplet Wetting

2023

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Dynamic wetting by liquids on solid surfaces depends on several aspects such as surface energy, roughness, and interfacial tension, among many others. Copper (Cu), gold (Au), aluminum (Al), and silicon (Si) are a few of the most important metals that are used extensively as substrates in various industrial and biomedical applications. Metals are etched frequently on different crystal planes for fabrication purposes. Etching exposes distinct crystal planes that may come in contact with the liquids when used for different applications. The interaction of the crystal planes with the liquid that comes in contact with the solid dictates the wetting behavior of the surface. This necessitates the importance of understanding how various crystal planes of the same metals behave under similar conditions. Herein, three specific crystal planes, namely, (1 0 0), (1 1 0), and (1 1 1), are investigated at a molecular scale for the above-mentioned metals. The dynamic contact angle and contact diameter trends revealed that the relatively hydrophobic surfaces (Cu, Si) tend to reach their equilibrium contact angle faster compared to the hydrophilic substrates (Al, Au). Molecular kinetic theory is used to estimate the three-phase contact line friction which is found to be higher for (1 1 1) planes. Further, a consistent potential energy distribution variation is observed for the crystal lattice of (1 0 0), (1 1 0), and (1 1 1). These findings can be used as a guideline to determine the factors needed to completely describe a dynamic wetting phenomenon of the droplet over the different crystal planes. The understanding will be of great use in deciding experimental strategies where fabricated different crystal planes would be required to have a liquid contact.

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“…For example, micro-orifices are used to suppress flow instabilities in micro-evaporators [17] and to control the Micromachines 2020, 11, 510 2 of 13 flow in vapor compression refrigeration systems [18,19]. Micro-orifices are also used in corrosion studies [20][21][22][23], in flow metering [24] and for organic matter synthesis [25]. Due to its practical relevance, orifice microfluidics has been investigated extensively, both for single-phase and two-phase flow.…”

Section: Introductionmentioning

confidence: 99%

Experiments on Liquid Flow through Non-Circular Micro-Orifices

et al. 2020

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Microfluidics is an active research area in modern fluid mechanics, with several applications in science and engineering. Despite their importance in microfluidic systems, micro-orifices with non-circular cross-sections have not been extensively investigated. In this study, micro-orifice discharge with single-phase liquid flow was experimentally investigated for seven square and rectangular cross-section micro-orifices with a hydraulic diameter in the range of 326–510 µm. The discharge measurements were carried out in pressurized water (12 MPa) at ambient temperature (298 K) and high temperature (503 K). During the tests, the Reynolds number varied between 5883 and 212,030, significantly extending the range in which data are currently available in the literature on non-circular micro-orifices. The results indicate that the cross-sectional shape of the micro-orifice has little, if any, effect on the hydrodynamic behavior. Thus, existing methods for the prediction of turbulent flow behavior in circular micro-orifices can be used to predict the flow behavior in non-circular micro-orifices, provided that the flow geometry of the non-circular micro-orifice is described using a hydraulic diameter.

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Development of a microfluidic setup to study the corrosion product deposition in accelerated flow regions

Cited by 19 publications

References 25 publications

Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process

Decontamination of a Contaminated RCP Shaft Using the SP-HyBRID Process

Molecular Insights into the Effect of Crystal Planes on Droplet Wetting

Experiments on Liquid Flow through Non-Circular Micro-Orifices

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