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Combustion Synthesis of Silicon Carbide in Nitrogen Atmosphere
Author(s) -
Yamada Osamu,
Hirao Kiyoshi,
Koizumi Mitsue,
Miyamoto Yoshinari
Publication year - 1989
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.1151-2916.1989.tb06315.x
Subject(s) - exothermic reaction , combustion , silicon carbide , nitrogen , decomposition , atmosphere (unit) , materials science , pyrolysis , adiabatic process , adiabatic flame temperature , carbide , chemical engineering , nitrogen gas , analytical chemistry (journal) , mineralogy , chemistry , composite material , thermodynamics , organic chemistry , combustor , physics , engineering
Fine SiC powders were synthesized by burning the mixed reactionts Si and C in a nitrogen atmosphere of 3 to 10 MPa. The exothermic synthesis reaction propagated spontaneously after igniting the reactants at room temperature. The SiC powders obtained had a uniform size distribution of about 0.2 μm. The combustion velocity was 0.8 to 1.5 mm / s. The maximum temperature measured at the reaction was 2500 K, which was higher than the adiabatic combustion temperature of SiC, but slightly lower than the decomposition temperature of Si 3 N 4 under nitrogen pressure.