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Thermodynamics and Combustion Synthesis of Si–TiC–N and Si–TiO2–N

  • Chang-Chun Ge , Jiang-Tao Li and Yong-Ge Cao
Published/Copyright: December 16, 2021
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Abstract

Self-Propagating High-Temperature Synthesis (SHS) of the Si-N2 system is a typical SHS using a gas-solid system to obtain one of the most important advanced ceramics – silicon nitride. For improving the properties and reliability of Si3N4-based ceramics, SHS of Si–TiC–N2 and Si–TiO2–N2 are investigated in this work. Stability diagrams at combustion temperatures are established through thermodynamic calculations. In contrast to the conventional idea of “diluent”, a new idea of “active diluent” is proposed. In these two systems TiC and TiO2 not only act as diluents, but also participate in the reactions during SHS. Two new kinds of in-situ particulate reinforced ceramic composites, Si3N4/SiC/TiCN, Si3N4/Si2N2O/TiN, are developed.


Chang-Chun Ge, Jiang-Tao Li, Yong-Ge Cao Laboratory of Special Ceramics and Powder Metallurgy University of Science and Technology Beijing, Beijing 100083, P.R. China

Dedicated to Prof. Dr.-Ing. habil. Dr.-Ing. E.h. Werner Schatt on the occasion of his 75th birthday


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Received: 1997-10-27
Published Online: 2021-12-16

© 1998 Carl Hanser Verlag, München

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