Property of SHS-Az Ceramics

The basic laws of burning of systems element-sodium azide-halide and synthesis of final refractory powders are investigated. Once the optimal technological parameters of synthesis are found, the technological process of obtaining of powders nitrides, carbonitrides, and compositions on their basis in a mode SHS-Az [12] is developed. It was found that the most appreciable influence on quality of final powders render density of reactor loading, pressure of gaseous medium, ratio of components in system, and size of particles in initial components mixture. 

The presented data prove the high potential opportunities as refractory powders nitrides, carbonitrides, and compositions on their basis synthesized in a mode SHS-Az, and technology of their obtaining. 

Microstmcture of Si3N4 powder of furnace synthesis (Ukraine) 

Hot-pressed ceramics made of Si3N4 of furnace synthesis 

Microstructure of Si3N4 powder LC-10 of H.C.Starck Bayer (Germany) 

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