Schick, Michael and Brillo, Juergen and Egry, Ivan and Hallstedt, Bengt (2012) Viscosity of Al-Cu liquid alloys - Measurement and thermodynamic description. Journal of Materials Science, 47, pp. 8145-8152. Springer. doi: 10.1007/s10853-012-6710-x.
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Abstract
In the present work a high temperature oscillating cup viscometer has been used to measure the viscosities of liquid binary Al-Cu alloys. The dependence of viscosity on temperature is well described by the Arrhenius law. For constant temperature, the viscosity as a function of copper concentration exhibits a maximum at a mole fraction xCu=0.7. This might be due to a pronounced chemical short range order in the liquid phase at this composition. As the comparison of existing phenomenological models describing viscosity as a function of composition to the experimental data is unsatisfactory, a new model for the viscosity has been developed within this work based only on a few assumptions and using the enthalpy of mixing as input parameter which is easily accessible. The agreement between model calculation and experimental data is excellent.
Item URL in elib: | https://elib.dlr.de/77683/ | ||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||
Title: | Viscosity of Al-Cu liquid alloys - Measurement and thermodynamic description | ||||||||||||||||||||
Authors: |
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Date: | 2012 | ||||||||||||||||||||
Journal or Publication Title: | Journal of Materials Science | ||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||
Gold Open Access: | No | ||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||
Volume: | 47 | ||||||||||||||||||||
DOI: | 10.1007/s10853-012-6710-x | ||||||||||||||||||||
Page Range: | pp. 8145-8152 | ||||||||||||||||||||
Publisher: | Springer | ||||||||||||||||||||
Status: | Published | ||||||||||||||||||||
Keywords: | Aluminum, binary liquid alloys, copper, Gibbs energy, thermophysical properties, viscosity, viscometer. | ||||||||||||||||||||
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 Materialforschung unter Mikro-g (old) | ||||||||||||||||||||
Location: | Köln-Porz | ||||||||||||||||||||
Institutes and Institutions: | Institute of Materials Physics in Space | ||||||||||||||||||||
Deposited By: | Brillo, Dr.rer.nat. Jürgen | ||||||||||||||||||||
Deposited On: | 05 Oct 2012 09:05 | ||||||||||||||||||||
Last Modified: | 08 Nov 2023 07:38 |
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