Spectral and directional emittance of alumina at 823 K
Source abstract
Abstract
Spectral–directional emittance measurements of aluminum oxide (99.5% pure), in air, were performed at 823 K using an apparatus comprised of a Fourier Transform Infrared (FTIR) spectrometer, a blackbody radiating cavity (hohlraum), and a sample holder which allows directional measurements. The data cover a wide spectral range between 2 and 25 μm, and a directional range from a surface normal to a 72° polar angle. The aluminum oxide sample used in the experiment had a nominal surface roughness of 1 μm determined by a profilometer. Directional emittance shows no departure from dielectric behavior.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Calibration and Measurement Techniques · Thermal Radiation and Cooling Technologies · Optical Coatings and Gratings
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References (10)
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