Evaluation of the heat leakage in the thermal diffusivity measurement of molten metals by a laser flash method

T. Nishi, H. Ohta, H. Shibata, Y. Waseda

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Evaluation of the radiative and conductive heat loss from a molten metal sample to the cell has been made in order to obtain accurate thermal diffusivities of molten metals at high temperature with a laser flash method. The results suggest that thermal diffusivity values of molten nickel can be determined in the temperature range from 1728 to 1928 K with an uncertainty of ±3% in comparison with case considering only the effect of radiative heat loss. The usefulness of a cell for a laser flash method has been confirmed by applying simulated results to evaluate the heat leakage in the thermal diffusivity measurement of molten metals.

Original languageEnglish
Pages (from-to)1735-1751
Number of pages17
JournalInternational Journal of Thermophysics
Volume24
Issue number6
DOIs
Publication statusPublished - 2003 Nov 1

Keywords

  • Heat loss
  • Laser flash method
  • Molten nickel
  • Numerical analysis
  • Thermal diffusivity

ASJC Scopus subject areas

  • Condensed Matter Physics

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