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Preparation of mixtures of silicon oxynitride and silicon nitride by the reaction of calcium silicide with ammonium chloride
Author(s) -
Hofer Ferdinand,
Veigl Walter,
Hengge Edwin
Publication year - 1992
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19920040711
Subject(s) - materials science , silicon oxynitride , silicon nitride , thermal shock , silicon , nitride , silicide , nitrogen , halide , ammonium chloride , ammonium , inorganic chemistry , chemical engineering , composite material , metallurgy , layer (electronics) , organic chemistry , chemistry , engineering
Silicon nitride and silicon oxynitride materials have great potential for high‐temperature, load‐bearing applications because of their high strength, high thermal shock resistance and good oxidation resistance. The subnitride (Si 3 N) n formed by the known reaction of CaSi 2 with ammonium halides is shown here to react with nitrogen providing a new route to, for example, silicon nitride fibers (see figure).