METHOD OF PRODUCING QUASI-CRYSTALLINE MATERIAL Russian patent published in 2021 - IPC C22C21/12 C22C1/04 B22F9/02 C22F1/57 

FIELD: metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly, to production of powders of quasi-crystalline materials. Method of producing powder of quasi-crystalline material of Al-Cu-Fe system involves mixing powders of aluminum, copper and iron at component ratio corresponding to region of existence of quasi-crystalline phase of alloy of Al-Cu-Fe system, heating the obtained mixture of powders to initiate synthesis of quasi-crystalline material and annealing reaction product to stabilize chemical composition of quasi-crystalline material in oxygen-free atmosphere with subsequent grinding of sinter to obtain powder of specified dispersion, wherein heating of mixture of powders for initiation of synthesis and annealing is carried out in elongated crucible with diameter of 5-100 cm in quasi-stationary mode of synthesis of quasi-crystalline material, in which crucible with powder mixture is fed into feed furnace with diameter 3-5 mm larger than that of crucible at rate equal to that of front of chemical synthesis reaction directed towards movement of introduced crucible, providing, during heating, a mixture of powders of a constant thermal field relative to the furnace at the front of the chemical synthesis reaction and in the annealing zone, wherein the annealing zone, formed immediately behind the front of the chemical synthesis reaction, is 2-5 times the crucible diameter.

EFFECT: invention is aimed at obtaining high-quality powder of quasi-crystalline material with maximum speed, especially in continuous process mode.

7 cl, 5 dwg, 1 tbl, 4 ex