A modelling framework for coupled hydrogen diffusion and mechanical behaviour of engineering components
Sign Up to like & getrecommendations! Published in 2020 at "Computational Mechanics"
DOI: 10.1007/s00466-020-01847-9
Abstract: In this paper, we propose a finite element formulation for solving coupled mechanical/diffusion problems. In particular, we study hydrogen diffusion in metals and its impact on their mechanical behaviour (i.e. hydrogen embrittlement). The formulation can… read more here.
Keywords: diffusion; hydrogen diffusion; formulation; mechanical behaviour ... See more keywords
Hydrogen-Diffusion Mechanical Treatment of Structural Materials
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DOI: 10.1007/s11003-020-00378-1
Abstract: We consider a new approach to the solution of the problems of elevation of the wear resistance of cutting tools and enhancement the serviceability of structural materials. It is based on the analysis of the… read more here.
Keywords: mechanical treatment; hydrogen; structural materials; diffusion mechanical ... See more keywords
First-principles insights of hydrogen diffusion dynamics at the α-Al2O3 (0001) surface
Sign Up to like & getrecommendations! Published in 2020 at "Applied Surface Science"
DOI: 10.1016/j.apsusc.2020.147263
Abstract: Abstract Hydrogen diffusion dynamics in the α-Al2O3 is very important because it associates directly with the performance of α-Al2O3 as the tritium permeation barrier (TPB) material in the tritium handling systems. In this work, the… read more here.
Keywords: hydrogen; diffusion dynamics; dynamics al2o3; surface ... See more keywords
Dielectric-barrier-discharge plasma-assisted hydrogen diffusion flame. Part 1: Temperature, oxygen, and fuel measurements by one-dimensional fs/ps rotational CARS imaging
Sign Up to like & getrecommendations! Published in 2018 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2018.01.031
Abstract: Abstract One-dimensional hybrid fs/ps CARS imaging provides single-laser-shot measurements of temperature, oxygen, and hydrogen in a plasma-assisted hydrogen diffusion flame. The coaxial dielectric-barrier-discharge burner collapses the Re ∼50 hydrogen diffusion flame to within ∼5 mm of… read more here.
Keywords: oxygen; temperature; flame; hydrogen diffusion ... See more keywords
Experimental and numerical study of OH* chemiluminescence in hydrogen diffusion flames
Sign Up to like & getrecommendations! Published in 2018 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2018.08.019
Abstract: A co-flow burner was designed to generate axisymmetric diffusion flames for the application of line-of- sight optical diagnostics to hydrogen flames. Chemiluminescence images of OH∗ from laminar hydrogen diffusion flames, with and without co-flowing air,… read more here.
Keywords: diffusion flames; chemiluminescence; hydrogen diffusion; experimental numerical ... See more keywords
Ab initio study of hydrogen diffusion in Be and Be12Ti for fusion applications
Sign Up to like & getrecommendations! Published in 2021 at "Computational Materials Science"
DOI: 10.1016/j.commatsci.2020.109921
Abstract: Abstract Beryllium and Be12Ti are considered as neutron multiplier materials in various tritium breeding blanket designs for future fusion reactors. Tritium and helium are formed due to neutron-induced nuclear transmutation and accumulated in beryllium-based materials.… read more here.
Keywords: diffusion; tritium; be12ti; hydrogen diffusion ... See more keywords
Structural stability, phase transition, and hydrogen diffusion of PdCu phases with additions of Nb and Cr
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2016.09.186
Abstract: Abstract Ab initio calculation shows that both Nb and Cr are energetically more favorable to substitute the Cu atoms in Pd8Cu8 phases, and decrease H stability in Pd8Cu8, which seems good to the process of… read more here.
Keywords: hydrogen; phase transition; pdcu; hydrogen diffusion ... See more keywords
Fast hydrogen diffusion along Σ13 grain boundary of α-Al2O3 and its suppression by the dopant Cr: A first-principles study
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2017.01.147
Abstract: Abstract To acquire knowledge of the effect of chromium dopant bringing on hydrogen diffusion along grain boundaries (GBs) of α-Al2O3, the energetics and mobility of hydrogen along Σ13 GB with and without Cr dopant have been… read more here.
Keywords: along grain; diffusion; diffusion along; hydrogen diffusion ... See more keywords
Modeling of nonlinear hydrogen diffusion in titanium hydrides TiHx
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2017.04.085
Abstract: Abstract Behavior of hydrogen H in titanium hydride TiH x is studied with the help of macrokinetic modeling by the free hydrodynamic package OpenFOAM. Modeling of hydrogen in the δ -TiH x is performed taking… read more here.
Keywords: hydrogen; hydrogen diffusion; nonlinear hydrogen; titanium ... See more keywords
Effect of plastic deformation at room temperature on hydrogen diffusion of S30408
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Hydrogen Energy"
DOI: 10.1016/j.ijhydene.2018.07.156
Abstract: Abstract Understanding the influence of plastic deformation on diffusion is critical for hydrogen embrittlement (HE) study. In this work, thermal desorption spectroscope (TDS), slow strain rate test (SSRT), feritscope, transmission electron microscope (TEM) and TDS… read more here.
Keywords: hydrogen; diffusion; hydrogen diffusion; plastic deformation ... See more keywords
Microstructural details of hydrogen diffusion and storage in Ti–V–Cr alloys activated through surface and bulk severe plastic deformation
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DOI: 10.1016/j.ijhydene.2019.07.058
Abstract: Abstract Structural observations were carried out on particles obtained after hydrogenation cycling of the Ti25V50Cr25 and Ti10V75Cr15 alloys processed by surface or bulk severe plastic deformation using the surface mechanical attrition treatment (SMAT) and high-pressure… read more here.
Keywords: diffusion; surface bulk; bulk severe; severe plastic ... See more keywords