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Effect of Dilution and Porosity on Self‐Propagating High‐Temperature Synthesis of Silicon Nitride
Author(s) -
Cano Irene G.,
Borovinskaya Inna P.,
Rodriguez Miguel A.,
Grachev Vladimir V.
Publication year - 2002
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.1151-2916.2002.tb00436.x
Subject(s) - dilution , self propagating high temperature synthesis , nitriding , porosity , silicon nitride , materials science , silicon , porous silicon , nitride , work (physics) , chemical engineering , nitrogen , combustion , phase (matter) , metallurgy , microstructure , composite material , layer (electronics) , thermodynamics , chemistry , organic chemistry , physics , engineering
Self‐propagating high‐temperature synthesis is a very easy and low‐cost method to synthesize Si 3 N 4 . The nitriding of silicon powder takes place in a self‐sustained regime under high pressures of nitrogen with dilution of silicon by Si 3 N 4 . In this work effects of dilution and green‐mixture porosity on combustion velocity and phase content of reaction products are studied. Results are compared with previous work of other authors and different behaviors are found. An explanation of these behaviors is given.