Densities of liquid Re, Os, and Ir, and their temperature dependence measured by an electrostatic levitator

Takehiko Ishikawa; Chihiro Koyama; Paul François Paradis; Junpei T. Okada; Yui Nakata; Yuki Watanabe

doi:10.1016/j.ijrmhm.2020.105305

Densities of liquid Re, Os, and Ir, and their temperature dependence measured by an electrostatic levitator

Takehiko Ishikawa, Chihiro Koyama, Paul François Paradis, Junpei T. Okada, Yui Nakata, Yuki Watanabe

Materials Development Division

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Densities in the liquid phase for molten refractory metals (Re, Os, and Ir) whose values are over 18,000 kg/m³ have been re-measured using an electrostatic levitator. The sample position control of electrostatically levitated sample was revised to suppress sample oscillations and to reduce measurement errors on the volume calculation by image analysis. Therefore, the measured density data showed a clearer temperature dependence compared to our previous measurements. The measured density of Re, Os, and Ir can be respectively expressed as ρ_Re(T) = 18.9 × 10³–0.62 × (T-T_m) kg/m³, ρ_Os(T) = 19.4 × 10³–0.92 × (T-T_m)kg/m³, and ρ_Ir(T) = 19.6–0.83 × (T-T_m) kg/m³, where T_m is the melting temperature of each metal.

Original language	English
Article number	105305
Journal	International Journal of Refractory Metals and Hard Materials
Volume	92
DOIs	https://doi.org/10.1016/j.ijrmhm.2020.105305
Publication status	Published - 2020 Nov

Keywords

Density
Levitation
Liquid

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.ijrmhm.2020.105305

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@article{6868ca4bc92e4ce5bc316e77946da52a,

title = "Densities of liquid Re, Os, and Ir, and their temperature dependence measured by an electrostatic levitator",

abstract = "Densities in the liquid phase for molten refractory metals (Re, Os, and Ir) whose values are over 18,000 kg/m3 have been re-measured using an electrostatic levitator. The sample position control of electrostatically levitated sample was revised to suppress sample oscillations and to reduce measurement errors on the volume calculation by image analysis. Therefore, the measured density data showed a clearer temperature dependence compared to our previous measurements. The measured density of Re, Os, and Ir can be respectively expressed as ρRe(T) = 18.9 × 103–0.62 × (T-Tm) kg/m3, ρOs(T) = 19.4 × 103–0.92 × (T-Tm)kg/m3, and ρIr(T) = 19.6–0.83 × (T-Tm) kg/m3, where Tm is the melting temperature of each metal.",

keywords = "Density, Levitation, Liquid",

author = "Takehiko Ishikawa and Chihiro Koyama and Paradis, {Paul Fran{\c c}ois} and Okada, {Junpei T.} and Yui Nakata and Yuki Watanabe",

note = "Funding Information: This research is fully funded by Japan Aerospace Exploration Agency (JAXA) . Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = nov,

doi = "10.1016/j.ijrmhm.2020.105305",

language = "English",

volume = "92",

journal = "International Journal of Refractory Metals and Hard Materials",

issn = "0958-0611",

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TY - JOUR

T1 - Densities of liquid Re, Os, and Ir, and their temperature dependence measured by an electrostatic levitator

AU - Ishikawa, Takehiko

AU - Koyama, Chihiro

AU - Paradis, Paul François

AU - Okada, Junpei T.

AU - Nakata, Yui

AU - Watanabe, Yuki

PY - 2020/11

Y1 - 2020/11

N2 - Densities in the liquid phase for molten refractory metals (Re, Os, and Ir) whose values are over 18,000 kg/m3 have been re-measured using an electrostatic levitator. The sample position control of electrostatically levitated sample was revised to suppress sample oscillations and to reduce measurement errors on the volume calculation by image analysis. Therefore, the measured density data showed a clearer temperature dependence compared to our previous measurements. The measured density of Re, Os, and Ir can be respectively expressed as ρRe(T) = 18.9 × 103–0.62 × (T-Tm) kg/m3, ρOs(T) = 19.4 × 103–0.92 × (T-Tm)kg/m3, and ρIr(T) = 19.6–0.83 × (T-Tm) kg/m3, where Tm is the melting temperature of each metal.

AB - Densities in the liquid phase for molten refractory metals (Re, Os, and Ir) whose values are over 18,000 kg/m3 have been re-measured using an electrostatic levitator. The sample position control of electrostatically levitated sample was revised to suppress sample oscillations and to reduce measurement errors on the volume calculation by image analysis. Therefore, the measured density data showed a clearer temperature dependence compared to our previous measurements. The measured density of Re, Os, and Ir can be respectively expressed as ρRe(T) = 18.9 × 103–0.62 × (T-Tm) kg/m3, ρOs(T) = 19.4 × 103–0.92 × (T-Tm)kg/m3, and ρIr(T) = 19.6–0.83 × (T-Tm) kg/m3, where Tm is the melting temperature of each metal.

KW - Density

KW - Levitation

KW - Liquid

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U2 - 10.1016/j.ijrmhm.2020.105305

DO - 10.1016/j.ijrmhm.2020.105305

M3 - Article

AN - SCOPUS:85086428334

SN - 0958-0611

VL - 92

JO - International Journal of Refractory Metals and Hard Materials

JF - International Journal of Refractory Metals and Hard Materials

M1 - 105305

ER -

Densities of liquid Re, Os, and Ir, and their temperature dependence measured by an electrostatic levitator

Abstract

Keywords

ASJC Scopus subject areas

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