Effects caused by convection in the capillary and by stirring of the reservoir in the capillary-reservoir technique for measuring diffusion coeffients in liquid metals
| Autor: | K. G. Davis |
|---|---|
| Rok vydání: | 1970 |
| Předmět: | |
| Zdroj: | Canadian Metallurgical Quarterly. 9:409-414 |
| ISSN: | 1879-1395 0008-4433 |
| DOI: | 10.1179/cmq.1970.9.2.409 |
| Popis: | Causes of inaccuracy in determining diffusion coefficients in liquid metals by the capillary-reservoir technique have been investigated. Diffusion of silver in alloys of silver in liquid tin was chosen as a typical system. Examination was made of effects caused by stirring the reservoir, negative temperature gradients, and density gradients set up by differences in solute concentration between the liquid in the capillary tube and that in the reservoir. The results show that all three should be avoided if accurate data is to be obtained. Reesume Leauteur a recherche les causes du manque de precision dans la determination des coefficients de diffusion dans les metaux liquides par la methode du reservoir capillaire. Le systeme type choisi a ete pour la diffusion de l'argent dans des alliages d'argent dans de l' etain liquide. Ont ete examines les effets causes par une agitation du reservoir, par des gradients negatifs de tempetature, et par des gradients de densite dus a des differences de concentra... |
| Databáze: | OpenAIRE |
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