Tracer-diffusion in quenched lamellar phases
β Scribed by G. H. Fredrickson
- Publisher
- John Wiley and Sons
- Year
- 1993
- Tongue
- English
- Weight
- 471 KB
- Volume
- 44
- Category
- Article
- ISSN
- 0323-7648
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Diffusion coefficients of esAl, 44Ti, 51Cr, 54Mn. jsFe, 6oC~, g'Zr and "'%b have been measured in u-Zr single crystals at temperatures close to 84O'C. The diffusion coefficients of Al, Ti. Zr and Sb, which are in the range lo-'\*-lo-'2 cms/sec, appear to correspond with normal substitutional diffusi
The objective of the paper is to investigate the relationship between tracer diffusivity and intrinsic diffusivity for sorption in ZeoJites. It is argued that this relationship cannot be derived from irreversible thermodynamics. Dependence of tracer diffusivity on sorbate concentration for Langmuiri