activated diffusion

activated diffusion

[′ak·də‚vād·əd di′fyü·zhən]
(solid-state physics)
Movement of atoms, ions, or lattice defects across a potential barrier in a solid.
References in periodicals archive ?
(2) Surface transport takes place by activated diffusion, that is, site hopping.
Barrer, "The mechanism of activated diffusion through silica glass," Journal of the Chemical Society, vol.
Diffusion data and related activation parameters for the process of diffusion follow the principle of Eyring's theory of activated diffusion of molecules into the PU network structures.
The application of the repair brazing is based on the effect of an activated diffusion interaction between particles of a composite brazing alloy and surfaces joined, being a result of a contact fusion of surface of particles and part wall by a low-melting component of the brazing alloy, and also by a post heat treatment of the brazed joint at temperature, lower by 80-120 [degrees]C than maximum (approx.

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