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Experimental Observation of Convection during Equiaxed Solidification of Transparent Alloys

Journal Materials Science Forum (Volume 508)
Volume Solidification and Gravity IV
Edited by A Roósz, M. Rettenmayr and Z. Gácsi
Pages 157-162
DOI 10.4028/www.scientific.net/MSF.508.157
Citation Sven Eck et al., 2006, Materials Science Forum, 508, 157
Online since March, 2006
Authors Sven Eck, J.P. Mogeritsch, Andreas Ludwig
Keywords Convection, Particle Image Velocimetry, Solidification, Transparent Alloy
Abstract

3D samples of NH4Cl-H2O solutions were solidified under defined experimental conditions. The occurring melt convection was investigated by Particle Image Velocimetry (PIV). The occurrence of NH4Cl crystals was observed optically and first attempts were made to quantitatively measure its number density, size distribution and sedimentation rate by PIV and Particle Tracking (PT). In order to prove the reproducibility of the results several experimental runs with equal and slightly modified conditions were analyzed.

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