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Erschienen in: Metallurgical and Materials Transactions A 8/2013

01.08.2013

The Surface Tension of Pure Aluminum and Aluminum Alloys

verfasst von: Ian Frank Bainbridge, John Andrew Taylor

Erschienen in: Metallurgical and Materials Transactions A | Ausgabe 8/2013

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Abstract

The surface tension of high purity and commercial purity aluminum in vacuo was determined using the sessile drop method and the results were found to compare favorably with published data. The effects of holding atmosphere, substrate, and “surface fracture” of the sessile drop on the measured surface tension values were investigated together with the effects of different solute elements commonly present in commercial aluminum alloys. The results obtained suggest that the nature of the surface oxide film formed on the droplets (affected by alloy composition and atmosphere) and the rupture of this film are the dominant factors influencing the surface tension values obtained. Changes in surface tension values of up to 60 pct were observed. The possible effect of this variable surface tension on practical casting processes, such as direct chill casting, is suggested.

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Fußnoten
1
The cleaning protocol involved etching in 0.5 pct HF for 30 seconds, washing in water, and then storage in acetone until insertion into the furnace.
 
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Metadaten
Titel
The Surface Tension of Pure Aluminum and Aluminum Alloys
verfasst von
Ian Frank Bainbridge
John Andrew Taylor
Publikationsdatum
01.08.2013
Verlag
Springer US
Erschienen in
Metallurgical and Materials Transactions A / Ausgabe 8/2013
Print ISSN: 1073-5623
Elektronische ISSN: 1543-1940
DOI
https://doi.org/10.1007/s11661-013-1696-9

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