Visualization of liquid-solid interface morphologies in gallium subject to natural convection

Melting and solidification of pure gallium is studied using real-time radioscopy methods. Sharp contrast between melt and solid phases with a 3% density difference is illustrated. The interfacial shape reflects convective flow in the liquid phase. Comparisons are made between real-time non-intrusive...

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Bibliographic Details
Published inJournal of crystal growth Vol. 140; no. 3-4; pp. 414 - 425
Main Authors Campbell, T.A., Koster, J.N.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.07.1994
Elsevier
Subjects
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science; rheology
Exact sciences and technology
Growth from melts; zone melting and refining
Materials science
Metals. Metallurgy
Methods of crystal growth; physics of crystal growth
Physics
Solid-fluid interfaces
Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)
Theory and models of crystal growth; physics of crystal growth, crystal morphology and orientation
Theory and models of film growth
Real time systems
Gallium
Temperature gradients
Morphology
Growth interface
Natural convection
Experimental study
Solid-fluid interfaces
Crystal growth from melts
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Summary:Melting and solidification of pure gallium is studied using real-time radioscopy methods. Sharp contrast between melt and solid phases with a 3% density difference is illustrated. The interfacial shape reflects convective flow in the liquid phase. Comparisons are made between real-time non-intrusive X-ray observations and results gained from probing techniques and numerical simulations reported in the literature. Similar qualitative trends in temperature distribution, yet discrepancies in interfacial location and shape, are exhibited.
ISSN:0022-0248
1873-5002
DOI:10.1016/0022-0248(94)90318-2