Equation icon  Fick's second law of diffusion

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Resource type: Equation
Description: Fick's second law of diffusion characterises how the concentration field at a point will changes with time.

TeX format: {\partial\phi\over\partial t} = D{\partial^2\phi\over\partial x^2}

D {D} = Diffusivity (m2s-1) {m^2s^{-1}}
φ {\phi} = Concentration (mol.m-3) {mol.m^{-3}}
x {x} = Position (m) {m}
t {t} = Time (s) {s}

Keywords: Fick • diffusion • precipitation • solid-state diffusion • multicomponent alloys • carburising • corrosion
Categories: Science approaches
Science approaches > Diffusion
Science approaches > Strengthening mechanisms > Solid-solution strengthening
Science approaches > Strengthening mechanisms > Precipitation (age) hardening
Created by: The University of Liverpool
License: This resource is released under the Creative Commons Attribution license (2.0 UK: England & Wales).
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Date created: 02 July 2010
Date added: 04 August 2010
Resource ID: 3183