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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:
AuthorsInstitution or Email of Authors
Brillo, J.UNSPECIFIED
Brooks, R.National Physical Laboratory, UK
Egry, IvanUNSPECIFIED
Quested, P.National Physical Laboratory, UK
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 (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
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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