Visualization of the Vacancy-Wind Effect Occurring in Chemical Diffusion and Ionic Conductivity in Solids

Irina V. Belova; Graeme E. Murch

doi:10.4028/www.scientific.net/DDF.273-276.431

Paper Titles

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Mass Transfer Analysis during Osmotic Dehydration of Eggplant Using Binary Solutions of Sucrose and Sodium Chloride
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Cross Interdiffusion Coefficients in Nickel- and Iron-Based Ternary Alloys
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Exploration of the Transition from Harrison Type-A Kinetics to Type-B Kinetics Regimes in Grain Boundary Diffusion
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Visualization of the Vacancy-Wind Effect Occurring in Chemical Diffusion and Ionic Conductivity in Solids
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Diffusion Kinetics Analysis of Cation Diffusion in YSZ and LSGM
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Theoretical Studies of Diffusion Kinetics in Austenite
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Finite Element Modelling of Oxygen Diffusion and Segregation at Interfaces in Ag-MgO Composites: Parametric Studies
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Interfacial Reactions during the Dissolution of Titanium in Liquid Iron
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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 273-276Visualization of the Vacancy-Wind Effect Occurring...

Visualization of the Vacancy-Wind Effect Occurring in Chemical Diffusion and Ionic Conductivity in Solids

Abstract:

Net fluxes of vacancies commonly occur during chemical interdiffusion in alloys, ionic conductivity and the annealing out of radiation damage. When atoms with different jump rates diffuse in a net flux of vacancies the phenomenon of the vacancy-wind effect will occur. This effect, first discovered by the late Dr John Manning, is a subtle phenomenon arising from a disturbed distribution of vacancies with respect to a given moving atom or species of atom. In this paper, the vacancy-wind effect is discussed and its visualization, performed for the first time by computer simulation, is demonstrated.