Abstract
A new method based on multiwavelength optical probing and multiwavelength pyroreflectometry of open sample surface to measure spectral optical properties of semitransparent ceramic materials at their melting points and to determine their true melting temperatures has been developed. With the method developed the spectral optical properties (reflectivity, emissivity, transmittance) of Nd2O3, Gd2O3, Er2O3, and Ho2O3 for seven wavelengths in the spectral range 0.4 to 1.1 μm at their melting points have been measured for the first time. It is shown that the method developed has a high precision in determining the true melting temperatures for semitransparent ceramic materials. In open surface pyrometry this method is used for the first time.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
M. Bober, H. U. Karow, and K. Muller, High Temp. High Press. 12:161 (1980).
V. A. Petrov and A. P. Chernyshev, High Temp. 25:361 (1987).
G. A. Kobzev and V. A. Petrov, Int. J. Thermophys. 14:371 (1993).
T. P. Salikhov and V. V. Kan, Int. J. Thermophys. 14:555 (1993).
M. Foex, Solar Energy 9:67 (1965).
L. M. Lopato, A. V. Shevchenko, A. E. Kushevsky, and S. G. Tresvyatsky, Izrest. AN SSSR Neorganich. Mater. 10:1481 (1974) (in Russian).
T. Noguchi and M. Mizuno, Solar Energy 11:90 (1967).
M. Foex and J. P. Traverse, Rev. Int. Hautes Temp. Refract. 3:429 (1966).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Salikhov, T.P., Kan, V.V. Melting Points, Spectral Reflectivity, and Emissivity of Semitransparent Ceramic Materials. International Journal of Thermophysics 20, 1801–1809 (1999). https://doi.org/10.1023/A:1022622316322
Published:
Issue Date:
DOI: https://doi.org/10.1023/A:1022622316322