Hydrogen Diffusion
Phase Field Simulation of Hydrogen Diffusion and Hydride Formation Pattern in Zirconium
... 1980, Shi 1994c]. We have studied the γ-hydride precipitation in single crystalline and bi-crystalline zirconium matrix under uniformly applied stress by phase-field kinetic method based on Khachaturyan’s elastic theory ...
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Application of a Tritium Imaging Plate Technique to Depth Profiling of Hydrogen in Metals and Determination of Hydrogen Diffusion Coefficients
... high hydrogen con- centration in F82H loaded by the plasma ...larger hydrogen diffusion coefficients in F82H. Determination of hydrogen diffusion coefficients form the depth ...
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A nuclear magnetic resonance and quasielastic neutron scattering study of hydrogen diffusion in metal hydrogen systems
... accurate diffusion parameters and only the highest purity m aterials should be studied to avoid unwanted paramagnetic ...the hydrogen, once activated, goes into a fluid-like diffusion mode enabling ...
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Effects of Hydrogen Diffusion on the Mechanical Properties of Austenite 316L Steel at Ambient Temperature
... inhomogeneous hydrogen concentration gradient that usually occurs after cathodic ...distributed hydrogen (in the range of several ppm (parts per million) hydrogen by weight) on the room- temperature ...
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Dominating Driven Factors of Hydrogen Diffusion and Concentration for the Weld Joint Coupled Analysis of Heat Transfer Induced Thermal Stress Driven Hydrogen Diffusion
... of hydrogen diffusion and concentration behavior, there were many analytical ...the hydrogen diffusion behavior using the hydrogen diffusion equation considering the stress driving term under existence ...
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Palladium Alloys for Hydrogen Diffusion Membranes44-50
... Behaviour of this type had not previously been reported for palladium-silver alloys and is not observed in commercial diffusion units, but may occur, as for example in the[r] ...
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Hydrogen Diffusion Technology12-16
... In this high technology industry a reliable supply of high purity gas is regarded as an essential everyday service, and new designs of palladium alloy diffusion un[r] ...
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Theory of hydrogen diffusion and reactions in crystalline silicon
... Our calculations on indi- vidual defects in a 32-atom cell (to be described in more detail in the next section) established that at the bond- center site H is most stable in the positive[r] ...
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Uphill Effects on Hydrogen Diffusion Coefficients in Pd77Ag23 Alloy Membranes32-36
... The choice of palladium (Pd) and Pd alloys selected for use in hydrogen permeation mem- branes is determined by the values for hydrogen solubility and hydrogen diffu[r] ...
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Hydrogen transport in metals:Integration of permeation, thermal desorption and degassing
... for hydrogen transport during electrochemical permeation, degassing and thermal desorption spectroscopy is ...Fick’s diffusion laws, where the initial concentration and diffusion coefficients depend ...
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Lattice Dynamical Investigation on the Diffusion of Hydrogen Isotopes in HfTi2
... the hydrogen stabilized cubic Laves phases (λ phase) is observed at ...The hydrogen diffusion parameters in the hydrogen stabilized Laves phase compound C15 – HfTi 2 H x have been ...
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Understanding localised corrosion phenomena by using the synergies of thermodynamics and diffusion
... Figure: Effective diffusion coefficient in an idealized Fe-C alloy... Isothermal Hydrogen Diffusion.[r] ...
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Processes of Hydrogen Release Relaxation at Thermal Decomposition of Electrodes of Nickel-Cadmium Batteries
... a hydrogen accumulation in electrodes of nickel-cadmium ...The hydrogen accumulation process goes on during a long batteries operation due to the electrolyte ...on hydrogen and ...the hydrogen ...
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Impacts of Melt Spinning and Element Substitution on Electrochemical Characteristics of the La–Mg–Ni based A2B7 Type Alloys
... alloy surface due to the fact that the refined grains effectively prohibit the pulverization of the alloy particles, a lower new surface of the alloy electrode being formed, decreasing the rate of charge transfer at the ...
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Hydrogen Visualization in Steels Using Ag Decoration Method
... of hydrogen on slips. The observed surface was the same as the hydrogen-charged surface because hydrogen diffusion in austenite is extremely slow compared to the SCM440 ...the hydrogen ...
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Crystallographic and Electrochemical Hydrogen Storage Performances of La0.75Ce0.25Ni3.80Mn0.90Cu0.30(Fe0.43B0.57)x (x = 0-0.20) Alloys
... the hydrogen transfer from the surface to the ...the hydrogen diffusion. Therefore, it is certain that the diffusion coefficient has a maximum value with increasing x ...
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Effects of Differential Diffusion on the Mutual Annihilation of Two Premixed Hydrogen-Air Flames
... differential diffusion may be identified for these interactions and subsequent effects on the following ...differential diffusion from those related to finite-rate ...differential diffusion and ...
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Calculation of Physical Properties of the Methanol-Water Mixture Using Molecular Dynamics Simulation
... the hydrogen bonds (H-bond) formed among ...a hydrogen atom bonded to another electronegative ...two hydrogen atoms and one oxygen atom, it can form an H-bond between the Oxygen and the H ...four ...
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“Evaluation of Antibacterial, Anti-inflammatory and Antioxidant Activities of Methanolic Extract of Whole Plant of Eichhornia crassipes” by Panthagada Sunitha, Seethala Apparao, Reddi Meghana Sandhya, Bennabattahula Sirisha, Kandiboti Lavanya, India.
... horses. The species is a "tonic” 8, 9 . The plant is used as a carotene-rich table vegetable in Taiwan. Along with vinegar, it is being used in treatment of septic wounds 10 . In the animal kingdom, it has been used ...
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INHIBITION OF GROWTH OF CALCIUM HYDROGEN PHOSPHATE DIHYDRATE CRYSTALS BY COUROUPITA GUIANENSIS LEAVES EXTRACT
... The single diffusion gel growth technique has been used to understand the growth of CHPD crystal in vitro. The effect of various parameters such as the gel pH, the concentration of reactants and the formation of ...
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