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Raman Spectral Characterization of Silicon Carbide Nuclear Fuel Coatings
Author(s) -
KRAUTWASSER P.,
BEGUN G. M.,
ANGELINI PETER
Publication year - 1983
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1983.tb10075.x
Subject(s) - materials science , silicon carbide , raman spectroscopy , chemical vapor deposition , coating , annealing (glass) , silicon , characterization (materials science) , carbon fibers , carbide , composite material , analytical chemistry (journal) , chemical engineering , nanotechnology , metallurgy , composite number , chemistry , optics , physics , engineering , chromatography
Raman spectral observations were used to characterize the vapor‐deposited Sic coatings on the microspheres used for fuels in high‐temperature gas‐cooled reactors. Good correlation was found between this nondestructive optical method and other characterization data. The SIC coatings, derived from methyltrichlorosilane, contained excess silicon or excess carbon, depending on deposition temperature, coating rate, and carrier gas used. Heat treatment of nonstoichiometric Sic resulted in many cases in the development of an outer layer of carbon. Fast‐neutron irradiation produced marked effects on the spectral properties of the coatings. Recovery of materials properties on thermal annealing was studied.