Melting Points, Spectral Reflectivity, and Emissivity of Semitransparent Ceramic Materials
Authors: Salikhov, T.P.; Kan, V.V.
Source: International Journal of Thermophysics, Volume 20, Number 6, November 1999 , pp. 1801-1809(9)
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 m 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.
Document Type: Research Article
Affiliations: Physical Technical Institute, Mavlyanova 2B, 700084 Tashkent, Republic of Uzbekistan
Publication date: 1999-11-01