期刊
NUCLEAR TECHNOLOGY
卷 175, 期 2, 页码 460-467出版社
TAYLOR & FRANCIS INC
DOI: 10.13182/NT11-A12317
关键词
spectral emissivity; very high temperature reactor; INCONEL (R) alloy 617
资金
- U.S. Department of Energy [DE-FC07-07ID14820]
- U.S. Government [NRC-04-07-120]
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 (Al2O3) at 600 degrees C against those reported in literature. The spectral emissivities of two candidate alloys for VHTR, INCONEL (R) alloy 617 (INCONEL is a registered trademark of the Special Metals Corporation group of companies) and SA508 steel, in air environment at 700 degrees C were measured.
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