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Density of Multicomponent Melts Measured by Electromagnetic Levitation

Brillo, Jürgen and Egry, Ivan (2011) Density of Multicomponent Melts Measured by Electromagnetic Levitation. Japanese Journal of Applied Physics, 50, 11RD02-01-11RD02-4. DOI: 10.1143/JJAP.50.11RD02.

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Abstract

A significant amount of time and costs could be saved on the development of new materials through numerical modeling, if there was an understanding on how their thermophysical properties change with a change of composition. Here, we report on systematic measurements of the density for a number of liquid metallic alloys. These measurements were carried out containerlessly using the technique of electromagnetic levitation. Systems were investigated from mono-atomic liquid metals, to binary and ternary alloys. The results are discussed using the excess volume as the key mixing parameter. We found that there is no strict rule for liquid alloys, whether or not the excess volume should be positive, negative, or zero. However, a clear tendency was observed: immiscible systems tend to exhibit a positive excess volume, strongly mixing systems show a negative excess volume, and alloys of which the components are chemically similar, exhibit an excess volume of almost zero.

Document Type:Article
Title:Density of Multicomponent Melts Measured by Electromagnetic Levitation
Authors:
AuthorsInstitution or Email of Authors
Brillo, JürgenJuergen.Brillo@dlr.de
Egry, IvanIvan-Egry@t-online.de
Date:November 2011
Journal or Publication Title:Japanese Journal of Applied Physics
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:50
DOI:10.1143/JJAP.50.11RD02
Page Range:11RD02-01-11RD02-4
Status:Published
Keywords:Alloys, Density, Levitation, Liquid, Thermophysical properties
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: Dr.rer.nat. Jürgen Brillo
Deposited On:28 Nov 2011 12:28
Last Modified:07 Feb 2013 20:27

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