METHOD TO PRODUCE ELECTRODES OF ALLOYS BASED ON TITANIUM ALUMINIDE Russian patent published in 2017 - IPC C22C14/00 B22D13/02 F27B14/06 

FIELD: metallurgy.

SUBSTANCE: method comprises production of cast intermetallic semifinished product by centrifugal SHS casting method using a reaction mixture with the following component ratio, wt %: target composition 57.5-62.0, energy additive 35.0-40.0, CaF₂ flux 2.5-5.0, and subsequent vacuum induction remelting of the resulting semifinished product in water-cooled copper crucible, introducing powder master alloy into the melt 1-2 minutes before it is poured into the crystalliser and consisting of pressed aluminium-nanopowder mixture with specific surface area of 5÷30 m²/g in amount providing 0.5-7 vol. % of nanopowder in the melt. A mixture of TiO₂, Ti, Al, Ca, Nb₂O₅ and Cr₂O₃ are used as the target, and CaO₂ are used as energy additive mixture.

EFFECT: invention allows to develop integral technology for producing electrodes of titanium aluminide-based alloys by centrifugal atomisation of electrode material and producing granules for additive 3d sintering technologies for complex products of heat-resistant metal materials.

3 cl, 10 tbl, 3 ex