The critical behaviour under microgravity of liquid alloys with mutual immiscibility

Toshio Itami, Tadahiko Masaki

研究成果: Article

2 引用 (Scopus)

抄録

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.

元の言語English
ページ(範囲)345-353
ページ数9
ジャーナルMeasurement Science and Technology
16
発行部数2
DOI
出版物ステータスPublished - 2005 2
外部発表Yes

Fingerprint

liquid alloys
Microgravity
microgravity
liquid phases
solubility
Solubility
Liquids
liquids
sounding rockets
rockets
Phase separation
critical temperature
tendencies
nucleation
Sounding rockets
cooling
electrical resistivity
coefficients
Rockets
Nucleation

ASJC Scopus subject areas

  • Polymers and Plastics
  • Ceramics and Composites
  • Materials Science (miscellaneous)

これを引用

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AB - 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.

KW - Critical phenomena

KW - Electrical resistivity

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KW - Microgravity

KW - Spinodal

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