Preparation of nanosized powders of solid solutions based on molybdenum disilicide for the manufacture of targets

Abstract

The influence of the energy state of reaction mixtures on the features of the mechanical synthesis of Mo_0.9Cr_0.1Si₂, Mo_0.9Nb_0.1Si₂ and Mo_0.9W_0.1Si₂ solid solutions has been investigated. It has been shown that the increase in the energy intensity of the mechanotreatment process due to using an AIR-0,015 high-energy planetary mill has made it possible to reduce substantially the induction period of mechanical synthesis of the solid solutions. Nanosized powders with an average particle size of at most 150 nm have been obtained. A technological regime for the manufacture of targets from the nanosized powders of the solid solutions has been developed. The use of the nanosized powders has enabled us to reduce the sintering temperature by 400―450 ^оС.