6533b820fe1ef96bd1279862
RESEARCH PRODUCT
Finite element simulation of diffusion into polycrystalline materials
Joachim MaierJürgen FleigJürgen FleigD. GryaznovD. Gryaznovsubject
Materials scienceCondensed matter physicsGeneral ChemistryCondensed Matter PhysicsSpace chargeFinite element methodGrain sizeCrystallographyEffective diffusion coefficientGrain boundary diffusion coefficientGeneral Materials ScienceGrain boundaryCrystalliteDiffusion (business)description
Diffusion in polycrystalline materials is investigated by means of numerical finite element simulations for constant source conditions. The grain boundaries are assumed to provide fast diffusion paths. Main emphasis is put on situations that typically occur for nanocrystals, viz. on situations in which (i) the diffusion length is significant compared with grain size, (ii) the influence of boundaries that are parallel to the surface become important in addition to the perpendicular ones. Furthermore, we treat the influence of blocking space charge layers sandwiching the core pathways and thus channeling grain boundary diffusion.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-06-01 | Solid State Sciences |