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titleCoPd融液の過冷却度
Other TitleUndercoolability of CoPd melts
Author(jpn)木村 格良; 水野 章敏; 渡辺 匡人
Author(eng)Kimura, Kakuryo; Mizuno, Akitoshi; Watanabe, Masahito
Author Affiliation(jpn)学習院大学 理学部 物理学科; 学習院大学 理学部 物理学科; 学習院大学 理学部 物理学科
Author Affiliation(eng)Gakushuin University Department of Physics, Faculty of Science; Gakushuin University Department of Physics, Faculty of Science; Gakushuin University Department of Physics, Faculty of Science
Issue Date2005-03
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
宇宙航空研究開発機構宇宙科学研究本部
Publication title宇宙利用シンポジウム 第21回 平成16年度
Space Utilization Research: Proceedings of the Twenty-first Space Utilization Symposium
Start page25
End page28
Publication date2005-03
Languagejpn
AbstractThe undercoolability of CoPd melts was investigated by using electromagnetic levitation technique. Undercooling limit by classical nucleation theory is utilized to analyze the results of undercooling measurements. It was found that Co81Pd19 melts was kept undercooling state below the Currie temperature of solid state of CoPd alloys. This result was different in previous results of D. Platzek et al. and T. Schenk et al. They reported that the Currie temperature of solid state of CoPd alloys affected undercooling limit of CoPd melts. To clarify the relationship between undercooling limits and magnetic properties of CoPd melts, the new apparatus facilities of electromagnetic levitator under the static magnetic fields of 1.3 T have been developed. Using this new experimental set-up, the temperature of levitated CoPd melts can be precisely measured. Thus, the mechanism of undercooling limits of CoPd melts can be clarified.
Keywordscobalt-palladium alloy; electromagnetic levitation; undercoolability; nucleation; supercooling; magnetic property; levitation; Gibbs free energy; undercooling limit; recalescence; コバルト・パラジウム合金; 電磁浮遊; 過冷却度; 核形成; 過冷却; 磁気特性; 浮遊; ギブス自由エネルギー; 過冷却限界; リカレッセンス
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会
SHI-NOAA0048095006
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/44418


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