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Type: Artigo de periódico
Title: Minimum temperature in electromagnetic levitation melting under terrestrial gravity
Author: Clemente, RA
Abstract: Recently, the existence of minima for the dissipated power in electromagnetic levitation melting has been reported. Such results will be used in order to estimate the temperature of the surface of the sample, when the only allowed mechanism for energy transport from the levitated drop is radiation cooling. It is also possible to estimate the difference in temperature, between the bulk and the surface of the specimen, when the principal mechanism for energy transport inside the liquid metal is thermal conductivity. The results suggest that even in experiments under terrestrial gravity, it should be possible to reach large undercooling for some metals of a high melting point, high total hemispherical emissivity, relatively low resistivity and density, without any need for a cooling gas atmosphere. (C) 1998 American Institute of Physics. [S0021-8979(98)02617-6].
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.368432
Date Issue: 1998
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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