METHOD OF PRODUCING POWDERS FROM HEAT-RESISTANT NICKEL ALLOYS Russian patent published in 2017 - IPC B22F9/10 C22C19/03 

FIELD: metallurgy.

SUBSTANCE: method involves the melting of the rotating cylindrical casting workpiece end with the plasma flow, provding the centrifugal spraying of the melt and forming the particles, solidifing into the micro ingots, when flying in the atmosphere of the cold plasma-forming mixture of gases, containing the inert gases and the hydrogen. The nitrogen is additionally introduced into the plasma-forming mixture of gases and maintains its concentration in the mixture at the level, that provides the gases ionization in the plasma flow and the ions interaction with the melt, saturation of the melt with nitrogen upto the level higher than its limiting solubility in the solid solution, typical for the heat-resistant nickel base alloys. Cool the micro ingots in the cold plasma forming mixture of gases at the rate of at least 103 ^C °/ sec.

EFFECT: increase of the heat-resistant nickel alloys strength characteristics.

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