New Technique for Producing the Alloys Based on Transition Metals

Abstract

In the present work, an essentially new approach to production of alloys of the refractory metals is presented. It consists in co-compacting and dehydrogenation-sintering of mixture of powders of two and more hydrides of transition metals of III, IV and V groups, or of mixture of powder of any of these hydrides with a transition metal of III–VIII groups. It was shown, that the heating of these mixtures after compacting in vacuum up to temperature higher than the temperature of a hydride dissociation, results in formation of strong, porousless, compact binary and triple alloys. The dependence of an alloy's structure formation on the components ratio in initial charge is established. The thermodynamic and kinetic estimations of reaction of alloy formation from the hydrides are given. The interaction of some of received alloys with hydrogen in combustion mode is studied, and the hydrides of these alloys are synthesized.Keywordshydridealloysdehydrogenation