Results 21 to 30 of about 93,113 (262)
Frontiers in Energy Research, 2023 Accurately predicting oxygen mass transport resistance and current distribution in fuel cells requires significant knowledge of oxygen diffusion coefficients in both in-plane and through-plane directions.
Keguang Yao +7 more
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Structural-phase transformations during nitro oxidation of steels and surface properties [PDF]
E3S Web of Conferences, 2023 Structural and phase changes in the surface diffusion layer during gas nitriding of steel were studied, with the formation of a crystallographic structure of the nitride layer for subsequent oxidation in water vapor.
Eshkabilov Kholikul
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Proceedings, 2018 The effect of the nitrogen diffusion layer formed by gas blow induction heating nitriding on the wear resistance and the fatigue properties of a titanium alloy was investigated.
Shogo Takesue +3 more
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Study on water and oxygen transfer characteristics of HT-PEM fuel cells
Heliyon, 2023 In this study, a steady-state model is developed by combining mechanical, Navier–Stokes, Maxwell–Stefan, and Butler–Volmer equations. This model is then used to investigate the influences of diffusion layer thickness deformation under a specific assembly
Hongbin He, Haisi Peng, Guangchao Li
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Apparent Permeability Model for Shale Gas Reservoirs Considering Multiple Transport Mechanisms
Geofluids, 2018 Shale formation is featured in nanopores and much gas adsorptions. Gas flow in the shale matrix is not a singular viscous flow, but a combination of multiple mechanisms. Much work has been carried out to analyze apparent permeability of shale, but little
Shijun Huang +5 more
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3D reconstruction of a gas diffusion layer and a microporous layer [PDF]
Journal of Membrane Science, 2010 Abstract The focus of the current study is on a state-of-the-art twin-layer gas diffusion layer (GDL) which consists of carbon tissues with a fibre diameter of 5–20 μm, and contains a microporous layer (MPL) coating which has sub-micron porous features.
H. Ostadi +5 more
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Effect of seasoning-layer stress on fluorine diffusion
AIP Advances, 2020 In semiconductor thin-film deposition equipment in which a fluorine- or chlorine-based gas is used as a cleaning gas, reducing residual fluorine or chlorine inside the equipment is important for increasing production efficiency and reducing production ...
Min Su Kim, Jeong Woo Lee
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Energies, 2023 The through-plane gas permeability and morphology of PEFC gas diffusion media (GDM) is investigated for different microporous layer (MPL) ink homogenisation techniques (bath sonication and magnetic stirring) for low- (Vulcan XC-72R) and high (Ketjenblack
Narvin D. Neehall +3 more
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Numerical study on the performance prediction of a proton exchange membrane (PEM) fuel cell [PDF]
Hydrogen, Fuel Cell & Energy Storage, 2017 An electrochemical analysis on a single channel PEM fuel cell was carried out by Computational Fuel Cell Dynamics (CFCD). The objective was to assess the latest developments regarding the effects of change in the current collector materials, porosity of ...
Puriya Mohamad Gholy Nejad +3 more
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The role of fluorine-containing ultra-thin layer in controlling boron thermal diffusion into silicon
Journal of Telecommunications and Information Technology, 2023 We have investigated the influence of silicon dioxide reactive ion etching (RIE) parameters on the composition of the polymer layer that is formed during this process on top of the etched layer, and finally, the role of this layer in high- temperature ...
Małgorzata Kalisz +3 more
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