High-temperature metal oxide spectral emissivities for pyrometry applications

Joseph Kalman, Nick Glumac, Herman Krier

Research output: Contribution to journalArticle

Abstract

A study was conducted to determine the functional wavelength dependence of the emissivities of magnesium oxide, titanium dioxide, zirconium dioxide, and iron (III) oxide at elevated temperatures within the visible and near-infrared regions of the spectrum. A highly controlled, optically thin, inert environment created in a shock tube was used for these measurements to limit contributions from impurities and other effects, such as multiple scattering. A discussion on the optical depth effects for the materials reported was provided, based upon the findings of earlier studies. Particles were injected approximately 0.5m upstream of the endwall before the diaphragm bursting. The suspended particles were heated to the spatially uniform test temperature behind the reflected shock. The shock velocity was obtained by measuring the time of arrival of the shock at several axial locations using pressure transducers.

Original languageEnglish (US)
Pages (from-to)874-879
Number of pages6
JournalJournal of thermophysics and heat transfer
Volume29
Issue number4
DOIs
StatePublished - 2015

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Space and Planetary Science

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