Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1506288 | Solid State Sciences | 2008 | 7 Pages |
Abstract
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.
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Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
D. Gryaznov, J. Fleig, J. Maier,