Rheological properties of MoSh-NbSh powders obtained by SHS-method and solid-phase mixture

摘要

(Mo_(1-x)Nb_x)Si2 powders (0.1≤x≤0.9) were obtained by self-propagating high-temperature synthesis (SHS) in ISMAN RAS. The same mixtures were obtained by commercial powders MoSi2 and NbSi2 solid-phase mixing in a planetary mill. The commercial disilicides were synthesised by magnesium-thermal reaction in Plasmotherm Ltd. During the experiment on powder mixtures deformation an array of data was obtained as a result of loading in a constant-speed regime. A kinetic curves representing the pressure dependence on time was a result of the experiment, then the necessary pressure values were determined in the preliminary cold pressing to provide the selected density of the workpieces, the compressibility modulus and the compressibility factor for each composition were calculated.