Heat capacity of liquid transition metals obtained with aerodynamic levitation

Sun, Yifan; Muta, Hiroaki; Ohishi, Yuji

Journal of Chemical Thermodynamics, 2022, 171, 106801

Number of Access:268（2025-07-26 23:14 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/88316

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Title
Heat capacity of liquid transition metals obtained with aerodynamic levitation
Creator
CreatorName
Sun, Yifan
NRID
1000060362670 1000060362670
researchmap permalink
212055 212055
CreatorName
Muta, Hiroaki
NRID
1000020571558 1000020571558
researchmap permalink
y_o y_o
Scopus Author ID
7102352704 7102352704
CreatorName
Ohishi, Yuji
Subject
Liquid metals
Transition metals
High-temperature
Heat capacity
Aerodynamic levitation
Abstract
The development of contactless measurement methods has allowed investigating the properties of molten materials at high temperatures in a controlled environment. As the sample is not in contact with any container walls while being heated, levitation techniques have an edge over traditional contact methods at elevated temperatures. Among the various thermophysical properties of interest, it has been challenging to measure heat capacity with levitation techniques because it is directly related to the emissivity of the sample. Previous studies on heat capacity measurement with various levitation techniques have produced results with large deviations, especially at elevated temperatures. In addition, there is a general lack of information on the heat capacity of liquid transition metals at temperatures exceeding 2000 K, especially using conventional calorimetry methods. In this study, we successfully obtained the isobaric heat capacity of liquid transition metals such as Co, Hf, Ir, Mo, Nb, Rh, Ru, Ti, V, and Zr with aerodynamic levitation using the newly developed “multiple-gas cooling” method. A comparison between our reported values and reference data enabled us to assess the accuracy of previous experiments and provide much needed heat capacity data for high-temperature liquid metals. This study highlights the applicability and reliability of the multiple-gas cooling method for measuring the heat capacity of liquid non-noble metals at temperatures approaching 3000 K.
Publisher
Elsevier
Source Title
Journal of Chemical Thermodynamics
Volume (Issue)
171
Page
106801
Date of Issued
2022-08
Language
English
Handle URL
https://hdl.handle.net/11094/88316
PISSN
00219614
eISSN
10963626
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.jct.2022.106801
Access Rights
open access
CopyRight
© 2022. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Submitted Manuscript Under Review
Category
学術雑誌論文 Journal Article