Equation icon  Darken equations

 
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Resource type: Equation
Description: The Darken regime is an adaptation of Fick's Laws for substitutional diffusion by the motion of vacancies. The Darken equation is an adaptation of Fick's laws for this purpose.

TeX formats:{J_A}' = - \tilde{D}\left (\frac{\partial C_A}{\partial x}\right)
\frac{\partial C_A}{\partial t} = \tilde{D} \left(\frac{\partial C_A}{\partial x}\right)

JA'{{J_A}'} = Diffusion flux (mol.m-2s-1) {mol.m^{-2}s^{-1}}
D {\tilde{D}} = Interdiffusion coefficient (m2s-1) {m^2s^{-1}}
CA {C_A} = Concentration (mol.m-3) {mol.m^{-3}}
x {x} = Position (m) {m}
t {t} = time (s) {s}
Keywords: Darken • Fick's • diffusion • precipitation • solid-state diffusion • multicomponent alloys • carburising • corrosion • substitutional • interdiffusion
Categories: Science approaches
Science approaches > Diffusion
Science approaches > Strengthening mechanisms > Solid-solution strengthening
Science approaches > Strengthening mechanisms > Precipitation (age) hardening
Science approaches > Corrosion & degradation > Corrosion principles
Created by: The University of Liverpool
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Date created: 08 July 2010
Date added: 04 August 2010
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Resource ID: 3184