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Heat balance in levitation melting :The influence of sample cooling by heat conduction

Lohöfer, Georg and Schneider, Stephan (2015) Heat balance in levitation melting :The influence of sample cooling by heat conduction. High Temperatures-High Pressures, 44, pp. 147-162. Old City Publishing. ISSN 0018-1544.

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Abstract

Electromagnetic levitation melting is a containerless processing technique for liquid metals requiring non-contact diagnostic tools. In order to properly perform such experiments, a precise knowledge of the temperature-time behaviour of the metal sample resulting from the heat balance between its heating and cooling during the processing is a prerequisite. In a preceding paper we provided the necessary theoretical background for the inductive heat input by the high frequency magnetic levitation field and the heat loss due to radiation and heat conduction through a surrounding gas and defined the set of experiments needed for obtaining the key parameters of the thermal model. In the present paper we improve the previous work - based on further experiments under microgravity - by investigating in detail the influence of the sample cooling by heat conduction in a surrounding Argon and Helium gas atmosphere.

Item URL in elib:https://elib.dlr.de/95656/
Document Type:Article
Title:Heat balance in levitation melting :The influence of sample cooling by heat conduction
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lohöfer, GeorgGeorg.Lohoefer (at) dlr.deUNSPECIFIED
Schneider, Stephanstephan.schneider (at) dlr.deUNSPECIFIED
Date:2015
Journal or Publication Title:High Temperatures-High Pressures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:44
Page Range:pp. 147-162
Publisher:Old City Publishing
ISSN:0018-1544
Status:Published
Keywords:Levitation melting, containerless processing, electromagnetic levitation, heat balance, thermal conduction, microgravity
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Vorhaben Materialforschung unter Mikro-g (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Lohöfer, Georg
Deposited On:19 Mar 2015 08:18
Last Modified:06 Sep 2019 15:20

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