t If' the analysis is to be taken seriously, we can observe that there is one jog in the almost monotonic plot of activation energy as a function of temperature. At this jog, there is a shght upward jump in the plot which is also predicted by Hart.
On the role of dislocations in bulk diffusion
โ Scribed by E.W. Hart
- Publisher
- Elsevier Science
- Year
- 1957
- Weight
- 144 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0001-6160
No coin nor oath required. For personal study only.
โฆ Synopsis
Since it. is well established now that there is preferential diffusion of atoms along dislocation lines in low-angle boundaries,(1>2$3' a question may arise as to the extent and manner in which randomly distributed dislocations may enhance the apparent volumetric diffusivity.
In particular, one may wonder whether the net self-di~usion process is describable in terms of a single volumetric diffusivity, since this is clearly not the case where an ordered array of dislocations is present.
๐ SIMILAR VOLUMES
## Diffusivities of antimony and indium have been measured in specially deformed germanium specimens. The diffusivity of antimony has been measured (1) parallel to a high density array of parallel edge dislocations, (2) perpendicular to this array, and (3) in low dislocation, non-deformed material.
## Abstract We hypothesized that the growth rates of filaments and floc formers in activated sludge are affected by the combination of kinetic selection (Lou and de los Reyes, Biotechnol Bioeng 92(6): 729โ739, 2005b) and substrate diffusion limitation (Martins et al., Water Res 37:2555โ2570, 2003).