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

Research output: Contribution to journalArticlepeer-review

1 Citation (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 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.

Original languageEnglish
Article number105305
JournalInternational Journal of Refractory Metals and Hard Materials
Volume92
DOIs
Publication statusPublished - 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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