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Density and viscosity of liquid ternary Al-Cu-Ag alloys
Brillo, J. and Brooks, R. and Egry, Ivan and Quested, P. (2008) Density and viscosity of liquid ternary Al-Cu-Ag alloys. High Temperatures-High Pressures, 37, pp. 371-381.
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Abstract
In this paper, we report on density and viscosity measurements of liquid Al-Cu-Ag alloys. The densities have been measured on electromagnetically levitated samples by a shadowgraph technique. The viscosities were obtained by means of an oscillating cup viscometer where a suspended crucible containing the liquid sample performs torsinal oscillations damped by the viscosity of the liquid. It was found that the density is a linear function of temperature for all investigated compositions. The concentration dependence of the molar volume exhibits a negative excess volume. The measured viscosities can be describes as a function of temperature by an Arrhenius law, yielding an activation energy for the viscous flow. The viscosity and its apparent activation energy exhibit both a maximum at a certain composition.
| Document Type: | Article | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Title: | Density and viscosity of liquid ternary Al-Cu-Ag alloys | ||||||||||
| Authors: |
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| Date: | 2008 | ||||||||||
| Journal or Publication Title: | High Temperatures-High Pressures | ||||||||||
| Refereed publication: | Yes | ||||||||||
| In ISI Web of Science: | Yes | ||||||||||
| Volume: | 37 | ||||||||||
| Page Range: | pp. 371-381 | ||||||||||
| Status: | Published | ||||||||||
| Keywords: | Al-Cu-Ag alloys, Density, Electromagentic levitation, Excess volume, Viscosity, Oscillating cup viscometry | ||||||||||
| HGF - Research field: | Aeronautics, Space and Transport | ||||||||||
| HGF - Program: | Space | ||||||||||
| HGF - Program Themes: | W FR - Forschung unter Weltraumbedingungen | ||||||||||
| DLR - Research area: | Space | ||||||||||
| DLR - Program: | W FR - Forschung unter Weltraumbedingungen | ||||||||||
| DLR - Research theme (Project): | W - Vorhaben Materialwissenschaftliche Forschung (old) | ||||||||||
| Location: | Köln-Porz | ||||||||||
| Institutes and Institutions: | Institute of Materials Physics in Space > Institute of Space Simulation > Center for Solidification of Undercooled Melts (ZEUS) | ||||||||||
| Deposited By: | Ingeborg Parpart | ||||||||||
| Deposited On: | 26 Jan 2009 | ||||||||||
| Last Modified: | 21 Jun 2010 14:49 |
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