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Molar heat capacity of liquid Ti, Al20Ti80 and Al50Ti50 measured in electromagnetic levitation

Brillo, Jürgen and Wessing, Johanna and Kobatake, Hidekazu and Fukuyama, Hiroyuki (2022) Molar heat capacity of liquid Ti, Al20Ti80 and Al50Ti50 measured in electromagnetic levitation. High Temperatures-High Pressures, 51 (2), pp. 145-164. Old City Publishing. ISSN 0018-1544.

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Abstract

Temperature dependent isobaric molar heat capacity cp was measured in a containerless way for liquid Ti and two AlTi binary liquid alloys. The technique of electromagnetic levitation was used in combination with laser modulation calorimetry. In all cases, linear temperature dependencies were found: At the corresponding liquidus temperatures, cp equals 49.75(±2.0) JK-1mol-1, 57.43(±2.9) JK-1mol-1, and 42.60(±2.2) JK-1mol-1, for Ti, Al20Ti80 and Al50Ti50, respectively. The respective temperature coefficients amount to -1.67 10-2 JK-2mol-1, -2.73 10-2 JK-2mol-1, and +7.83 10-2J K-2mol-1. For liquid Ti, there is a good agreement with existing literature data. The results are discussed in relation to the Neumann-Kopp rule.

Item URL in elib:https://elib.dlr.de/186363/
Document Type:Article
Title:Molar heat capacity of liquid Ti, Al20Ti80 and Al50Ti50 measured in electromagnetic levitation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Brillo, JürgenJuergen.Brillo (at) dlr.deUNSPECIFIED
Wessing, JohannaJohanna.Wessing (at) dlr.deUNSPECIFIED
Kobatake, HidekazuHidekazu.Kobatake (at) dlr.deUNSPECIFIED
Fukuyama, HiroyukiTohoku University, SendaiUNSPECIFIED
Date:2022
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:51
Page Range:pp. 145-164
Publisher:Old City Publishing
ISSN:0018-1544
Status:Published
Keywords:Al-Ti liquid alloys, electromagnetic levitation, molar heat capacity, normal spectral emissivity, thermophysical properties
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 - Project EML
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Brillo, Dr.rer.nat. Jürgen
Deposited On:17 May 2022 06:51
Last Modified:17 May 2022 06:51

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