Results 61 to 70 of about 568,795 (292)

Hydrogen diffusivity in FeAl

Bulletin of Materials Science, 1997
The room temperature diffusivity of hydrogen in a fully B2 ordered iron aluminide of composition Fe-35·8 Al was estimated from the experimental hydrogen depth profile to be 2·38×10−15m2/s. The mathematical procedure utilized for data analysis has been described. The estimated diffusivity is a lower bound value due to surface trapping effects.
P Banerjee, R Balasubramaniam
openaire   +2 more sources

Epilepsy‐Associated Variants of a Single SCN1A Codon Exhibit Divergent Functional Properties

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Pathogenic variants in SCN1A, which encodes the voltage‐gated sodium channel NaV1.1, are associated with multiple epilepsy syndromes exhibiting a range of clinical severity. SCN1A variants are reported in different syndromes, including Dravet syndrome, which is associated with loss‐of‐function, whereas neonatal/infantile‐onset ...
Lanie N. Liebovitz, Christopher H. Thompson, Linda C. Laux, Alfred L. George Jr.   +3 more
wiley   +1 more source

Investigation of Mechano-Electrochemical Effects on Hydrogen Distribution at Corrosion Defects

Hydrogen
This study employed tensile test, hydrogen permeation measurements, and potentiodynamic polarization testing to investigate the mechanical properties, hydrogen diffusion coefficients, and electrochemical behavior of X80 steel. A multifield coupled finite
Zhixiang Dai, Jiamin Tang, Sijia Zheng, Feng Wang, Qin Bie, Pengcheng Kang, Xinyi Wang, Shiwen Guo, Lin Chen   +8 more
doaj   +1 more source

Effect of Carbon Content and Microstructure on the Diffusion of Hydrogen in Low Carbon Steels

International Journal of Electrochemical Science, 2020
In this work, the electrochemical permeation technique proposed in the ASTM-G148-97 Ed 2011 standard was used to determine the maximum oxidation current density, imax; breakthrough time; tb, effective hydrogen diffusion coefficient, Deff; and surface ...
J.G. Arenas-Salcedo, J.G. Godínez-Salcedo, J.L. González-Velázquez, J.M. Medina-Huerta   +3 more
doaj   +1 more source

Thermomechanics of hydrogen storage in metallic hydrides: modeling and analysis [PDF]

, 2013
A thermodynamically consistent mathematical model for hydrogen adsorption in metal hydrides is proposed. Beside hydrogen diffusion, the model accounts for phase transformation accompanied by hysteresis, swelling, temperature and heat transfer, strain ...
Roubicek, Tomas, Tomassetti, Giuseppe
core   +2 more sources

Hydrogen diffusion in coal: Implications for hydrogen geo‐storage

Journal of Colloid and Interface Science, 2022
Hydrogen geo-storage is considered as an option for large scale hydrogen storage in a full-scale hydrogen economy. Among different types of subsurface formations, coal seams look to be one of the best suitable options as coal's micro/nano pore structure can adsorb a huge amount of gas (e.g. hydrogen) which can be withdrawn again once needed.
Keshavarz, Alireza, Abid, Hussein, Ali, Muhammad, Iglauer, Stefan   +3 more
openaire   +3 more sources

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

Advanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes, Moritz Bätcher, Andrea Deißenberger, Volkmar Stenzel, Andreas Hartwig   +4 more
wiley   +1 more source

Dynamics of internal diffusion during the hydrogenation of 1,5,9-cyclododecatriene on Pd/Al2O3 [PDF]

, 1999
Dynamic and pseudo-steady state diffusion–reaction models were simulated for the three-phase consecutive hydrogenation of 1,5,9-cyclododecatriene on a shell Pd/Al2O3 catalyst in order to examine the time evolution of concentration profiles inside the ...
Delmas, Henri, Julcour-Lebigue, Carine, Le Lann, Jean-Marc, Wilhelm, Anne-Marie   +3 more
core   +2 more sources

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

Advanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai, Xinrui Sarah Niu, Zhao Qin   +2 more
wiley   +1 more source

Grain boundary carbides as hydrogen diffusion barrier in a Fe-Ni alloy: A thermal desorption and modelling study

Materials & Design, 2018
A significant decrease in hydrogen absorption in the presence of grain boundary carbides compared to the carbide-free microstructure in the Ni-based HR6W alloy was measured by thermal desorption analysis (TDA).
Andrej Turk, David Bombač, Jakub Jelita Rydel, Maciej Ziętara, Pedro E.J. Rivera-Díaz-del-Castillo, Enrique I. Galindo-Nava   +5 more
doaj   +1 more source