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Combustion synthesis of single‐phase Al 4 SiC 4 powder with assistance of induction heating
Author(s) -
Gubarevich Anna V.,
Watanabe Tsubasa,
Nishimura Toshiyuki,
Yoshida Katsumi
Publication year - 2020
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/jace.16846
Subject(s) - induction heating , exothermic reaction , materials science , silicon carbide , combustion , ternary operation , phase (matter) , carbide , work (physics) , chemical engineering , analytical chemistry (journal) , composite material , thermodynamics , chemistry , electrical engineering , organic chemistry , chromatography , computer science , electromagnetic coil , programming language , engineering , physics
Ternary aluminum silicon carbide Al 4 SiC 4 is a promising material not only in refractory applications, but also in electronics and photocatalysis. However, synthesis of Al 4 SiC 4 requires high‐temperature heat treatment for several hours. In this work, we describe a new, fast and effective method to synthesize single‐phase Al 4 SiC 4 powder. Our method is based on combustion synthesis reaction of Al, Si and C initiated under high‐frequency induction heating. Heating program was optimized to prevent separation of melted aluminum and provide uniform initiation, propagation and completion of the reaction. As a result, pure‐phase Al 4 SiC 4 powder was synthesized in few minutes. Temperature profile of a sample measured during heating process showed appearance of two exothermic peaks, thus confirming propagation of a two‐step combustion reaction. Induction heating provided capability to finely and readily control external heating rate, which is considered to be one of the key factors to reach high‐purity Al 4 SiC 4 .