International Journal of Thermophysics

, Volume 20, Issue 4, pp 1085–1094

Density of Superheated and Undercooled Liquid Alumina by a Contactless Method

  • B. Glorieux
  • F. Millot
  • J.-C. Rifflet
  • J.-P. Coutures
Article

DOI: 10.1023/A:1022650703233

Cite this article as:
Glorieux, B., Millot, F., Rifflet, JC. et al. International Journal of Thermophysics (1999) 20: 1085. doi:10.1023/A:1022650703233

Abstract

The density of liquid alumina drops maintained in levitation with an aerodynamic device and heated with CO2 lasers is determined by analysis of high-speed video digital images between 2000 and 3100 K in various gases. It is shown that consistent results can be achieved for the lighter drops (m<100 mg) which do not depend on the nature of the gas. Experiments performed with lasers impinging the drop surface or during free cooling of the preheated drop gave similar results. The density is represented by the following expression: d=(2.79±0.01)(l−α(T−2500)) g·cm−3, where α=(4.22 ±0.14) × 10−5K−1.

contactless techniques density high-speed digital video high temperatures laser heating liquid alumina 

Copyright information

© Plenum Publishing Corporation 1999

Authors and Affiliations

  • B. Glorieux
    • 1
  • F. Millot
    • 1
  • J.-C. Rifflet
    • 1
  • J.-P. Coutures
    • 1
  1. 1.Centre de Recherches sur les Matériaux à Hautes Températures (CRMHT)CNRSOrléansFrance