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
On Hart's theory on the role of dislocation in bulk diffusion
โ Scribed by C.T. Tomizuka
- Publisher
- Elsevier Science
- Year
- 1958
- Weight
- 335 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0001-6160
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โฆ Synopsis
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.
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.
We consider scattering of elastic waves on parallel wedge dislocations in the geometric theory of defects or, equivalently, scattering of point particles and light rays on cosmic strings. Dislocations are described as torsion singularities located on parallel lines, and trajectories of phonons are a