Direct Measurements of Infrared Normal Spectral Emissivity of Solid Materials for High-Temperature Applications

作者：Hatzl S; Kirschner M^*; Lippig V; Sander T; Mundt Ch; Pfitzner M

来源：International Journal of Thermophysics, 2013, 34(11): 2089-2101.

DOI：10.1007/s10765-013-1531-y

• Cavity characteristics
• Emissivity
• High temperatures
• Infrared
• Silicon-carbide
• Spectral emissivity
• Spectral ratio method

A new facility for the measurement of the normal spectral emissivity of solid materials for high-temperature applications in the thermal steady state was developed at the Bundeswehr University of Munich. The measurements are performed under atmospheric conditions. The facility covers the temperature range between and and wavelengths between and . The principle of operation involves the spectral comparison of a test sample with a reference blackbody and the sample surface temperature determination with a numerical spectral ratio calculation. The optical characteristics of the blackbody and the sample surface temperature determination are discussed in detail. Furthermore, measurement results of the quasi-reference material silicon-carbide under steady-state conditions are presented to validate the measurement method.

• 出版日期2013-11