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Radiance Temperatures (in the Wavelength Range 521 nm to 1500 mn) of Rhenium and Iridium at Their Melting Points by a Pulse-Heating Technique

Published

Author(s)

J L. McClure, K Boboridis, A Cezairliyan

Abstract

The melting-point radiance temperatures (at seven wavelengths in the range 521 nm to 1500 nm) of rhenium and iridium were measured by a pulse-heating technique. The method is based on rapid resistive self-heating of the specimen from room temperature to its melting point in less than 1 s and on simultaneously measuring the specimen radiance temperature every 0.5 ms with two high-speed pyrometers. Melting was manifested by a plateau in the radiance temperature-versus-time function for each wavelength. The melting-point radiance temmperatures for a given specimen were determined by averaging the measured temperatures along the plateau of each wavelength. The melting-point radiance temperatures for each metal were determined by averaging results for several specimens at each wavelength.
Citation
International Journal of Thermophysics
Volume
20
Issue
No. 4

Keywords

emissivity (normal spectral), high temperature fixed points, high-speed pyrometry, irridium, melting, pyrometry

Citation

McClure, J. , Boboridis, K. and Cezairliyan, A. (1999), Radiance Temperatures (in the Wavelength Range 521 nm to 1500 mn) of Rhenium and Iridium at Their Melting Points by a Pulse-Heating Technique, International Journal of Thermophysics (Accessed February 26, 2024)
Created July 1, 1999, Updated February 17, 2017