Results 271 to 280 of about 197,986 (311)
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Physical Review E, 2005
A lattice Boltzmann model for the dissolution of solid structures of arbitrary shape in multi-component liquids is developed. To model diffusion-controlled dissolution, a multicomponent boundary condition is presented to impose a fixed concentration on an arbitrarily located boundary.
F, Verhaeghe +3 more
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A lattice Boltzmann model for the dissolution of solid structures of arbitrary shape in multi-component liquids is developed. To model diffusion-controlled dissolution, a multicomponent boundary condition is presented to impose a fixed concentration on an arbitrarily located boundary.
F, Verhaeghe +3 more
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Solid lipid particles in lipid films to control the diffusive release of 2‐heptanone
Pest Management Science, 2013AbstractBackgroundControlled‐release formulations of bioactive agents are of increasing interest for effective pest control. Volatile 2‐heptanone is a bioactive agent that has shown potential as a pesticide. The aim of this study was to investigate the kinetics of release of 2‐heptanone incorporated into lipid films or composite solid lipid particle ...
Cristina, Bilbao-Sáinz +7 more
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Kinetics of Gas/Solid Reaction: Diffusion-Controlled Case
2020When a metal is exposed to an oxidizing gas, say, oxygen, a tarnishing layer or oxide forms upon the metal. When a metallic alloy is exposed, an oxide of the less noble component of the alloy may form internally. Thermodynamics of oxidation is discussed, and then kinetics of such external and internal oxidation are examined when the overall kinetics is
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Journal of Physics C: Solid State Physics, 1984
For pt.III see ibid., vol.16, no.11, p.2087 (1983). The well-known relations for the total amount W of material that diffuses in time t into or out of a semi-infinite solid when the surface y=0 is held at some constant concentration, are to be multiplied by a factor (1+ epsilon 2U) when the solid contains dislocations.
A D Le Claire, A Rabinovitch
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For pt.III see ibid., vol.16, no.11, p.2087 (1983). The well-known relations for the total amount W of material that diffuses in time t into or out of a semi-infinite solid when the surface y=0 is held at some constant concentration, are to be multiplied by a factor (1+ epsilon 2U) when the solid contains dislocations.
A D Le Claire, A Rabinovitch
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A Controlled Solid State Diffusion Process to form Cermet Anodes for Solid Oxide Fuel Cells
MRS Proceedings, 1998ABSTRACTThe interfacing of thin film vapor deposition technologies and solid state electrochemistry has led to the recent development of polarized electrochemical vapor deposition (PEVD). In this study, PEVD was applied to deposit a thin layer of yttria stabilized zirconia (YSZ) over a porous metallic electrode to form the cermet anode of a solid oxide
Eric Z. Tang +2 more
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Solid–state diffusion–controlled growth of the phases in the Au–Sn system
Philosophical Magazine, 2017The solid state diffusion-controlled growth of the phases is studied for the Au–Sn system in the range of room temperature to 200 °C using bulk and electroplated diffusion couples.
Varun A. Baheti +4 more
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Diffusion-controlled growth of solid solution scales on nickel-cobalt alloys
Corrosion Science, 1976Abstract Cation concentration profiles in solid—solution scales on NiCo alloys have been calculated by making use of Wagner's theoretical analysis. As a result of the computation method used, it becomes unnecessary to incorporate experimental values in the calculation for either the parabolic rate constant, k p , or the boundary conditions of ...
B.D Bastow, D.P Whittle, G.C Wood
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Wigner solids and diffusion controlled reactions in a regular array of spheres
Physica A: Statistical Mechanics and its Applications, 1985Abstract We consider particles diffusing independently in the interstitial space of a regular array of perfectly absorbing spheres. We present exact results for the steady state rate coefficient. We show that the rate coefficient may be related to the field energy of a corresponding Wigner solid which is calculated using methods developed by Nijboer ...
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Diffusion-controlled solid-state reactive sintering of Nd:YAG transparent ceramics
Ceramics International, 2015Diffusion-controlled solid-state reactive sintering is one of the most important steps in fabrication of highly transparent Nd:YAG ceramics using commercial oxide powders as starting materials. The difference in raw powders, especially for the characteristic of Y2O3 powder, will seriously influence the sintering behavior and finally lead to the large ...
Binglong Liu +9 more
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Control of a Metal-Electrode Work Function by Solid-State Diffusion of Nitrogen
MRS Proceedings, 2002AbstractThe work function of a metal gate electrode has been adjusted with the introduction of nitrogen by solid-source diffusion from an over-stoichiometric TiN1+x layer. RBS measurements have shown that measurable concentrations of nitrogen can be diffused into a 10nm Ta layer at moderate anneal temperatures (>500°C), and that this concentration ...
R.J.P. Lander +6 more
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