Two-Stage Mechanochemical Synthesis of Niobium Silicides during Layer-by-Layer Combustion
O. V. Lapshin, O. A. Shkoda
Tomsk Scientific Center, Siberian Branch, Russian Academy of Sciences, Tomsk,Russia
Keywords: powder mixture, mechanical activation, silicides, combustion wave
Abstract
This paper describes experimental studies and a mathematical model of mechanical activation and high-temperature synthesis during the Nb-2Si combustion. The model is constructed in the macroscopic approximation. Synthesis regimes are determined depending on the duration of joint mechanical activation of the reagents. The kinetic parameters of pulverization of the initial powder mixture and the mechanochemical synthesis of the reaction product are obtained on the basis of experimental data by the inverse problem method.
|
