The critical behaviour under microgravity of liquid alloys with mutual immiscibility

Toshio Itami, Tadahiko Masaki

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The process of two-liquid phase separation (TLPS) was studied by the electrical resistivity, p, both on the ground and under microgravity obtained on board the sounding rocket. On cooling to the critical temperature, Tc, on the ground, increase of p and decrease of the temperature coefficient of p, dp/dT were found in the homogeneous liquid phase of liquid Bi-Ga and Cd-Ga alloys. However, increase of p and decrease of dp/dT were observed for the liquid Hg-Ga system. Both tendencies were explained successfully by the concentration fluctuation model. The rocket experiment for the p of liquid Bi-Ga alloys revealed that, under microgravity, the concentration fluctuation grows extensively and the nucleation for TLPS is suppressed.

Original languageEnglish
Pages (from-to)345-353
Number of pages9
JournalMeasurement Science and Technology
Volume16
Issue number2
DOIs
Publication statusPublished - 2005 Feb

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Keywords

  • Critical phenomena
  • Electrical resistivity
  • Liquid immiscibility
  • Liquid metals
  • Microgravity
  • Spinodal

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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