Anomalous pressure dependent phase diagram of liquid Ga–In alloys

Shir Ben Shalom, Han Gyeol Kim, Moran Emuna, Uri Argaman, Yaron Greenberg, Joonho Lee, Eyal Yahel, Guy Makov

Research output: Contribution to journalArticle

Abstract

Pressure dependent phase diagram of liquid Ga–In alloys was calculated using high accuracy measurements of sound velocity and density at ambient conditions. In particular, the eutectic temperature and composition were found to have anomalous dependence on pressure. These alloys belong to a new class of room-temperature liquid metals, which are considered for multiple novel applications. To establish a pressure dependent phase diagram, we have measured to high accuracy sound velocity and density measurements across a wide range of temperatures and compositions. The sound velocity and density of the Ga–In system in the liquid phase were measured by a modified pulse-echo technique and the constrained drop method respectively. Implementing a sub-regular solution model, the pressure dependence of the Ga–In phase diagram was calculated. The new phase diagram was corroborated by a novel experimental measurement of the eutectic temperature as a function of pressure, utilizing a Paris-Edinburgh high-pressure large volume cell. The eutectic composition and temperature are found to depend strongly on pressure, information which extends our understanding of the Ga–In system and its possible applications.

Original languageEnglish
Article number153537
JournalJournal of Alloys and Compounds
Volume822
DOIs
Publication statusPublished - 2020 May 5

Keywords

  • Density
  • Ga-In
  • High-pressure
  • Liquid metals
  • Phase diagram
  • Sound velocity

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Ben Shalom, S., Kim, H. G., Emuna, M., Argaman, U., Greenberg, Y., Lee, J., Yahel, E., & Makov, G. (2020). Anomalous pressure dependent phase diagram of liquid Ga–In alloys. Journal of Alloys and Compounds, 822, [153537]. https://doi.org/10.1016/j.jallcom.2019.153537