Articles
  • Contactless density and volumetric thermal expansion coefficient measurement of undercooled liquid (Ba,Sr)TiO3 using aerodynamic levitator
  • Ki-Ju Leea, M. S. Vijaya Kumarb, Sang-Kyo Junga, Jin-Hwan Jeonga, Chi-Hoon Leea, Myeong-Woo Chod, Geun-Woo Leec, Chi-Hwan Leea, Shinichi Yodab and Won-Seung Choa,*
  • a School of Materials Science and Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon, 402-751, Korea b Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ward, Sagamihara, Kanagawa, 252-5210, Japan c Korea Research Institute of Standards and Science, 267 Gajeong-ro, Yuseong-gu, Daejeon 305-340, Korea d Department of Mechanical Engineering, Inha University, 100 Inha-ro, Nam-gu, Incheon, 402-751, Korea
Abstract
Almost-spherical (Ba,Sr)TiO3, approximately 2.0 mm in diameter, was synthesized using an aerodynamic levitator. The densities and volumetric thermal expansion coefficient of the undercooled liquid (Ba,Sr)TiO3 were measured from high speed video images of a molten droplet. The densities and volumetric thermal expansion coefficient of the undercooled liquid phase at temperatures ranging from 1678 K to 1948 K were 4.1 ~ 3.5 g/cm3 and 5.7 × 10-4K-1, respectively.

Keywords: Aerodynamic levitation, (Ba,Sr)TiO3, Density, Thermophysical propertie

This Article

  • 2013; 14(3): 311-314

    Published on Jun 30, 2013

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