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IN SITU MEASUREMENTS OF SPECTRAL EMISSIVITY OF MATERIALS FOR VERY HIGH TEMPERATURE REACTORS.
- Source :
- Nuclear Technology; Aug2011, Vol. 175 Issue 2, p460-467, 8p
- Publication Year :
- 2011
-
Abstract
- An experimental facility for in situ measurements of high-temperature spectral emissivity of materials in environments of interest to the gas-cooled very high temperature reactor (VHTR) has been developed. The facility is capable of measuring emissivities of seven materials in a single experiment, thereby enhancing the accuracy in measurements due to even minor systemic variations in temperatures and environments. The system consists of a cylindrical silicon carbide (SIC) block with seven sample cavities and a deep blackbody cavity, a detailed optical system, and a Fourier transform infrared spectrometer. The reliability of the facility has been confirmed by comparing measured spectral emissivities of SiC, boron nitride, and alumina (Al<subscript>2</subscript>0<subscript>3</subscript>) at 600 °C against those reported in literature. The spectral emissivities of two candidate alloys for VHTR, INCONEL® alloy 617 (INCONEL is a registered trademark of the Special Metals Corporation group of companies) and SA508 steel, in air environment at 700°C were measured. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00295450
- Volume :
- 175
- Issue :
- 2
- Database :
- Supplemental Index
- Journal :
- Nuclear Technology
- Publication Type :
- Academic Journal
- Accession number :
- 64088924
- Full Text :
- https://doi.org/10.13182/NT11-A12317