Influence of the surface processes on the hydrogen permeation through ferritic steel and amorphous Fe40Ni40Mo4B16 alloy specimens

Georgiev, J.; Anestiev, Ljubomir

doi:10.1016/s0022-3115(97)00228-6

Cited by 12 publications

(5 citation statements)

References 16 publications

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“…Substituting Eqs. (21)(22)(23) into Eq. (14) gives rise to the discretized form of this boundary condition as 26 (24)…”

Section: Numerical Solutionmentioning

confidence: 99%

“…The behavior of hydrogen isotopes in austenitic [13][14][15][16][17][18][19][20][21] and ferritic-martensitic steels [12,[22][23][24][25][26][27] has been studied both experimentally and theoretically at considerable depth since the 1960s. These studies aimed to measure hydrogen isotope permeability, diffusivity, and solubility and to investigate the rate-limiting mechanisms of hydrogen isotope transport through these alloys.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the total tritium inventory in the primary coolant of PWRs is the superposition of (21), (23), and the diffusion flux from the cladding into the coolant.…”

mentioning

confidence: 99%

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Defect evolution in single crystalline tungsten following low temperature and low dose neutron irradiation

Koyanagi

Fukuda

et al. 2016

Journal of Nuclear Materials

121

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FeCrAl, an advanced oxidation-resistant iron-based alloy class, is a highly prevalent candidate as an accident-tolerant fuel cladding material. Compared with traditional zirconium alloy fuel cladding, increased tritium permeation through FeCrAl fuel cladding to the primary coolant is expected, raising potential safety concerns. In this study, the hydrogen permeability of several FeCrAl alloys was obtained using a static permeation test station, which was calibrated and validated using 304 stainless steel. The high hydrogen permeability of FeCrAl alloys leads to concerns with respect to potentially significant tritium release when used for fuel cladding in LWRs. The total tritium inventory inside the primary coolant of a light water reactor was quantified by applying a 1-dimensional steady state tritium diffusion model to demonstrate the dependence of tritium inventory on fuel cladding type. Furthermore, potential mitigation strategies for tritium release from FeCrAl fuel cladding were discussed and indicate the potential for application of an alumina layer on the inner clad surface to serve as a tritium barrier.

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“…Substituting Eqs. (21)(22)(23) into Eq. (14) gives rise to the discretized form of this boundary condition as 26 (24)…”

Section: Numerical Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Defect evolution in single crystalline tungsten following low temperature and low dose neutron irradiation

Koyanagi

Fukuda

et al. 2016

Journal of Nuclear Materials

121

View full text Add to dashboard Cite

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“…13). The reaction happened in the inner region and the substances does not diffuse outward [41]. Equation (4) is the diffusion equation combined with concentration change.…”

Section: Theoretical Model and Analysismentioning

confidence: 99%

Roles of UV light strength and auxiliary electric field in the photocatalytic degradation effect of organic contaminant

YaoYu

Bian

et al. 2019

High Voltage

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The accumulation of contaminants on the electrical devices could adversely affect the operation. The present work used photocatalytic functional material to coat on the surface of the electrical devices to prevent the influence of organic contamination. This kind of material was mainly composed of TiO 2 that can remove the contamination by the effect of photooxidation. The photocatalysis was affected by the strength of UV light and electric field. In the experiment, methyl orange (MO) was used as the organic contaminant. The effect of UV light and auxiliary electric field were analysed based on the theoretical simulation. With the stronger UV light, more electron-hole pairs were generated, photocatalytic effect became more pronounced. With the auxiliary electric field, the recombination of electron and hole could be restrained that would increase the productive rate of hole; therefore, more hydroxyl radical will be produced to degrade MO.

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“…In this study, a CO/N 2 mixed gas was introduced at 700°C to create a reducing atmosphere, and the diffusion couple method [21][22][23][24] was used to explore the interdiffusion reaction between calcium ferrite and calcium titanate in the time range of 0-120 min. Electronic probe characterization was used to investigate the effect of the presence of calcium titanate on the calcium ferrite matrix.…”

Section: Introductionmentioning

confidence: 99%

Diffusion coefficient of Ti4+ in calcium ferrite/calcium titanate diffusion couple

Wang

Yue

Xue

2020

Int J Miner Metall Mater

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This study investigated the interdiffusion of calcium ferrite/calcium titanate system in the time range of 0-120 min by the diffusion couple method in a CO/N 2 reducing atmosphere at 700°C. The results show that after the diffusion reaction occurred, no longitudinal agglomerations were present on the substrate surface on the calcium titanate side. When the diffusion time was increased to 105 min, a net vacancy flow from calcium titanate to calcium ferrite might have occurred, causing the surface of the calcium ferrite substrate to collapse. The thickness of the diffusion layer of the calcium ferrite/calcium titanate system was about 17-48 μm, which conforms to the parabolic law of diffusion. The diffusion coefficient and the Ti 4+ concentration in the calcium ferrite/calcium titanate system are related. This shows an increase in the diffusion coefficient with the increase of Ti 4+ concentration, and the diffusion coefficient value was in the range of 10 −12 -10 −11 cm 2 •s −1 .

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Influence of the surface processes on the hydrogen permeation through ferritic steel and amorphous Fe40Ni40Mo4B16 alloy specimens

Cited by 12 publications

References 16 publications

Defect evolution in single crystalline tungsten following low temperature and low dose neutron irradiation

Defect evolution in single crystalline tungsten following low temperature and low dose neutron irradiation

Roles of UV light strength and auxiliary electric field in the photocatalytic degradation effect of organic contaminant

Diffusion coefficient of Ti4+ in calcium ferrite/calcium titanate diffusion couple

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