Back to Search Start Over

IN SITU MEASUREMENTS OF SPECTRAL EMISSIVITY OF MATERIALS FOR VERY HIGH TEMPERATURE REACTORS.

Authors :
CAO, G.
WEBER, S. J.
MARTIN, S. O.
MALANEY, T. L.
SLATTERY, S. R.
ANDERSON, M. H.
SRIDHARAN, K.
ALLEN, T. R.
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