METHOD TO OBTAIN NITROGEN-CONTAINING LIGATURE Russian patent published in 2012 - IPC C22C35/00 C22C29/00 C22C1/04 

FIELD: metallurgy.

SUBSTANCE: to obtain the ligature the source alloy containing 40-85% vanadium, 2-57% of iron and one or more elements selected from a number of calcium, aluminium, silicon, carbon and manganese in an amount of 1.0-21.0%, the powder is milled with a particle size of less than 1.5 mm, the powder is placed in an atmosphere of nitrogen with a purity not less than 99.0% at pressures above 0.1 MPa, an exothermic reaction of creation of vanadium nitride is initiated by local heating of the part of surface layer of the powder; the powder is saturated with nitrogen in so-called self-propagating high-temperature mode of synthesis (SHS) to obtain a composite alloy based on vanadium nitride with the density of 4.0-7.0 g/cm³, which consists of vanadium nitride in an amount of 44-92% and a binder alloy, which is an iron-based alloy comprising at least two elements selected from a number of calcium, aluminium, silicon, carbon, manganese and vanadium in an amount 1.0-20.0% and having a start of melting temperature less than 1500°C.

EFFECT: invention enables to obtain a nitrogen-containing ligation, which at a minimum flow of electricity is used to produce nitride-vanadium alloy combining high density and strength with a high content of nitrogen and vanadium.

10 cl, 1 tbl