Thermophysical properties of liquid and supercooled rare earth elements measured by an electrostatic levitator

Material type: 文書・図像類

Author: 石川, 毅彦ほか

Publisher: 宇宙航空研究開発機構

Publication date: 2008-02-29

Material Format: Digital

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Note (General)：: Thermophysical properties of four rare earth elements, namely Lanthanum (La), Praseodymium (Pr), Neodymium (Nd), and Terbium (Tb) have been measured u...

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Material Type: 文書・図像類
Title: Thermophysical properties of liquid and supercooled rare earth elements measured by an electrostatic levitator
Author/Editor: 石川, 毅彦
Paradis, Paul-Francois
渡辺, 勇基
古池, 紀之
Ishikawa, Takehiko
Watanabe, Yuki
Koike, Noriyuki
Author Heading: 石川, 毅彦
Paradis, Paul-Francois
渡辺, 勇基
古池, 紀之
Ishikawa, Takehiko
Watanabe, Yuki
Koike, Noriyuki
Publication, Distribution, etc.: 宇宙航空研究開発機構
Publication Date: 2008-02-29
Publication Date (W3CDTF): 2008-02-29
Periodical title: 宇宙航空研究開発機構研究開発報告 = JAXA Research and Development Report
No. or year of volume/issue: JAXA-RR-07-014E
Volume: JAXA-RR-07-014E
ISSN (Periodical Title): ISSN : 1349-1113
Text Language Code: eng
Subject Heading: 熱物性
希土類元素
過冷却
液体金属
無容器メルト
静電浮遊
ランタン
プラセオジム
ネオジム
テルビウム
界面張力
粘度
thermophysical property
rare earth element
supercooling
liquid metal
containerless melt
electrostatic levitation
lanthanum
praseodymium
neodymium
terbium
interfacial tension
viscosity
Target Audience: 一般
Note (General): Thermophysical properties of four rare earth elements, namely Lanthanum (La), Praseodymium (Pr), Neodymium (Nd), and Terbium (Tb) have been measured using electrostatic levitation techniques. The understanding of the nature and behavior of rare earth metals in their liquid phases requires accurate values of their physical properties. However, keeping samples in their liquid phases free from contamination long enough to carry out measurements represents a formidable challenge. This is due to high reactivity and melts contamination of these elements with crucibles or gaseous environment. The use of an electrostatic levitator in vacuum conditions circumvents these difficulties and permits the measurements of the density, the surface tension, and the viscosity of these metals above and below their melting temperature. In this paper, the measurement methods as well as the levitation apparatus are introduced and measured values are reported.
資料番号: AA0063800000
レポート番号: JAXA-RR-07-014E
Access Restrictions: 限定公開
Periodical Title (NCID): AA1192675X
https://ci.nii.ac.jp/ncid/AA1192675X
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 宇宙航空研究開発機構 : 宇宙航空研究開発機構リポジトリ