| Résumé : |
Rheology of mixtures in the solidification range (semi-solid metallic alloys, magmas, corium, molten nitrates) has been studied during continuous cooling. For a given shear rate, two empirical relationships between viscosity and solid volume fraction have been proposed, based on either an exponential relationship proposed by Ramacciotti or a Krieger-Dougherty relationship. A study on molten nitrates showed the quantitative effect of the shear rate on the apparent viscosity. This relationship is also applicable to other types of solidifying mixtures. Visualization during solidification in a shear cell enabled the determination of the main physical phenomena and their relationship to rheology. |
Aller sur edunet
Accueil
Rheology of mixtures in the solidification range in RHEOLOGIE, Vol. 9 (06/2006)
