Results 31 to 40 of about 568,795 (292)

Research on Hydrogen Leakage Risk Control Methods in Deck Compartments of Hydrogen Fuel Cell-Powered Ships Based on CFD Simulation and Ventilation Optimization

Fire
Hydrogen fuel cell vessels represent a vital direction for green shipping, but the risk of large-scale hydrogen leakage and diffusion in their enclosed compartments is particularly prominent. To enhance safety, a simplified three-dimensional model of the
Xiaoyu Liu, Jie Zhu, Zhongcheng Wang, Zhenqiang Fu, Meirong Liu   +4 more
doaj   +1 more source

Hydrogen Desorption from Mg Hydride: An Ab Initio Study

Crystals, 2012
Hydrogen desorption from hydride matrix is still an open field of research. By means of accurate first-principle molecular dynamics (MD) simulations an Mg–MgH2 interface is selected, studied and characterized.
Simone Giusepponi, Massimo Celino
doaj   +1 more source

Combined Kelvin probe force microscopy and secondary ion mass spectrometry for hydrogen detection in corroded 2024 aluminium alloy [PDF]

, 2013
The capability of Kelvin probe force microscopy (KFM) to detect and locate hydrogen in corroded 2024 aluminium alloy was demonstrated. Hydrogen was introduced inside the 2024 alloy following a cyclic corrosion test consisting of cycles of immersion in 1 ...
Alexis, Joël, Andrieu, Eric, Blanc, Christine, Lacroix, Loïc, Larignon, Céline, Odemer, Grégory   +5 more
core   +3 more sources

Hydrogen diffusion on Si(001)

Physical Review B, 1996
We have imaged hydrogen on Si~001! at low coverages in a variable-temperature STM from 300 K up to 700 K. Individual hydrogen atoms were imaged which became mobile at around 570 K. The observed rate of hopping along the dimer rows was consistent with an activation energy of 1.68 6 0.15 eV.
Owen, J, Bowler, DR, Goringe, C, Miki, K, Briggs, G   +4 more
openaire   +2 more sources

Research on Hydrogen/Deuterium Permeation Behavior and Influencing Factors of X52MS Pipeline Steel

Metals
The hydrogen/deuterium permeation behavior of X52MS pipeline steel with three thicknesses was investigated using the gas/liquid phase permeation method by changing the current density and regulating the surface roughness.
Ning Liu, Ke Jin, Junqiang Ren, Jie Sheng, Xuefeng Lu, Xingchang Tang   +5 more
doaj   +1 more source

Hydrogen diffusion through polymer membranes [PDF]

MATEC Web of Conferences, 2020
This experimental study determines H2 transfer properties of High Density PolyEthylene (HDPE) or epoxy membranes. Two different techniques are compared. The pressure gradient technique is analyzed for permeability or diffusion. Results show that the main
Gay Nicolas, Lamouchi Takoua, Agostini Franck, Davy Catherine A., Skoczylas Frédéric   +4 more
doaj   +1 more source

Modulation of the thermodynamic, kinetic and magnetic properties of the hydrogen monomer on graphene by charge doping

, 2010
The thermodynamic, kinetic and magnetic properties of the hydrogen monomer on doped graphene layers were studied by ab initio simulations. Electron doping was found to heighten the diffusion potential barrier, while hole doping lowers it.
Guo Ren Zhang, Liang Feng Huang, Martin R. M., Mei Yan Ni, Wang Huai Zhou, Xiao Hong Zheng, Yong Gang Li, Zhi Zeng   +7 more
core   +1 more source

A Numerical Study of the Leakage and Diffusion Behavior of Hydrogen Dispensers in Hydrogen Refueling Stations Under Different Leakage Conditions

Energies
The investigation of hydrogen leakage and diffusion behavior is of great importance for the assessment of safety risks and the establishment of safety regulations for hydrogen refueling stations.
Lei Zhang, Zhixiang Duan, Rui Ding, Cuiwei Liu   +3 more
doaj   +1 more source

Impact of yttrium hydride formation on multi-isotopic hydrogen retention by a getter trap for the DONES lithium loop

Nuclear Fusion, 2023
Compliance with imposed hydrogen concentration limits in the lithium loop of the DEMO-Oriented Neutron Source (DONES) requires the installation of an yttrium-based hydrogen trap.
S.J. Hendricks, J. Molla, F.R. Urgorri, E. Carella   +3 more
doaj   +1 more source

Numerical Analysis of the Hydrogen Dispersion Behavior in Different Directions in a Naturally Ventilated Space

Applied Sciences, 2021
Studies on hydrogen leakage have mainly focused on the influences of location and geometrical configuration on the distribution of the hydrogen in various spaces.
Xiaolu Zhang, Qiubo Wang, Xulei Hou, Yuejuan Li, Yang Miao, Kun Li, Li Zhang   +6 more
doaj   +1 more source