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Combustion Synthesis of Si 3 N 4 –SiC Composite Powders
Author(s) -
Zeng Jianren,
Miyamoto Yoshinari,
Yamada Osamu
Publication year - 1991
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.1151-2916.1991.tb08283.x
Subject(s) - nitriding , materials science , combustion , composite number , silicon , carbon fibers , silicon carbide , chemical engineering , metallurgy , composite material , layer (electronics) , chemistry , engineering
Fine Si 3 N 4 ‐SiC composite powders were synthesized in various SiC compositions to 46 vol% by nitriding combustion of silicon and carbon. The powders were composed of α‐Si 3 N 4 , β‐Si 3 N 4 , and β‐SiC. The reaction analysis suggested that the SiC formation is assisted by the high reaction heat of Si nitridation. The sintered bodies consisted of uniformly dispersed grains of β‐Si 3 N 4 , β‐SiC, and a few Si 2 N 2 O.