Heat capacity of liquid transition metals obtained with aerodynamic levitation

Sun, Yifan; Muta, Hiroaki; Ohishi, Yuji

doi:https://doi.org/10.1016/j.jct.2022.106801

Heat capacity of liquid transition metals obtained with aerodynamic levitation

Sun, Yifan; Muta, Hiroaki; Ohishi, Yuji

Journal of Chemical Thermodynamics, 2022, 171, 106801

アクセス数:79件（2025-04-30 19:15 集計）

固定URL: https://hdl.handle.net/11094/88316

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タイトル	Heat capacity of liquid transition metals obtained with aerodynamic levitation
著者	著者名 Sun, Yifan
	NRID 1000060362670 1000060362670 researchmap permalink 212055 212055 著者名 Muta, Hiroaki
	NRID 1000020571558 1000020571558 researchmap permalink y_o y_o Scopus Author ID 7102352704 7102352704 著者名 Ohishi, Yuji
キーワード等	Liquid metals
	Transition metals
	High-temperature
	Heat capacity
	Aerodynamic levitation
抄録	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.
出版者	Elsevier
収録物名	Journal of Chemical Thermodynamics
巻(号)	171
ページ	106801
刊行年月	2022-08
言語	英語
ハンドルURL	https://hdl.handle.net/11094/88316
PISSN	00219614
eISSN	10963626
関連情報 (isVersionOf)	DOI (出版社版) https://doi.org/10.1016/j.jct.2022.106801
アクセス権	open access
権利情報	© 2022. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
出版タイプ	Submitted Manuscript Under Review
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Journal of Chemical Thermodynamics. 2022, 171, p. 106801
DC.title	Heat capacity of liquid transition metals obtained with aerodynamic levitation
DC.creator	Sun, Yifan
	Muta, Hiroaki
	Ohishi, Yuji
DC.publisher	Elsevier
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2022-08
DC.identifier	https://doi.org/10.1016/j.jct.2022.106801
DC.subject	Liquid metals
	Transition metals
	High-temperature
	Heat capacity
	Aerodynamic levitation
DCTERMS.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.
DC.rights	© 2022. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
DC.format	88316
citation_title	Heat capacity of liquid transition metals obtained with aerodynamic levitation
citation_author	Sun, Yifan
	Muta, Hiroaki
	Ohishi, Yuji
citation_publisher	Elsevier
citation_language	英語
citation_date	2022-08
citation_journal_title	Journal of Chemical Thermodynamics
citation_volume	171
citation_firstpage	106801
citation_doi	https://doi.org/10.1016/j.jct.2022.106801
citation_public_url	https://hdl.handle.net/11094/88316

Heat capacity of liquid transition metals obtained with aerodynamic levitation

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