Scholarlink

<p>The surface tension and viscosity are important thermophysical properties of any liquid. Using the electromagnetic levitation facility aboard the International Space Station (ISS-EML), these properties were measured in the equilibrium and supercooled states of a quasicrystal forming Zr<sub>80</sub>Pt<sub>20</sub> alloy liquid. A negative temperature coefficient of the surface tension and no indication of surface oxides in the X-ray photoelectron spectroscopy measurements indicate that the surface tension data are likely not influenced by oxygen contamination. Interestingly, the surface tension is smaller than expected for a liquid with large negative heat of mixing. Estimates from ideal and regular solution models raise the possibility that the surface is enriched in Zr, lowering the surface tension. These results may have important ramifications to the recently reported heterogeneous nucleation mechanism in this liquid (J. Chem. Phys. <b>162</b>, 134502 (2025)).</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Surface Tension and Viscosity of Zr80Pt20 Measured on the International Space Station and Its Implication on Nucleation Mechanism

  • 期刊论文

  • 发表日期：

    2025年11月5日

查看全文
  • A. K. Gangopadhyay,
  • M. Beckers,
  • S. Schneider,
  • Yelin Sheng,
  • K. F. Kelton

摘要

The surface tension and viscosity are important thermophysical properties of any liquid. Using the electromagnetic levitation facility aboard the International Space Station (ISS-EML), these properties were measured in the equilibrium and supercooled states of a quasicrystal forming Zr80Pt20 alloy liquid. A negative temperature coefficient of the surface tension and no indication of surface oxides in the X-ray photoelectron spectroscopy measurements indicate that the surface tension data are likely not influenced by oxygen contamination. Interestingly, the surface tension is smaller than expected for a liquid with large negative heat of mixing. Estimates from ideal and regular solution models raise the possibility that the surface is enriched in Zr, lowering the surface tension. These results may have important ramifications to the recently reported heterogeneous nucleation mechanism in this liquid (J. Chem. Phys. 162, 134502 (2025)).