METHOD OF PRODUCING POWDERED METAL MATRIX COMPOSITE FROM ALUMINIUM AND TUNGSTEN CARBIDE Russian patent published in 2025 - IPC C22C1/05 B22F9/14 B22F1/12 

FIELD: powder metallurgy.

SUBSTANCE: invention relates to powder metallurgy, particularly to a method of producing a metal matrix composite from aluminium and tungsten carbide. It can be used in machine building and instrument making. In a pre-evacuated chamber filled with argon at normal atmospheric pressure and room temperature, an arc discharge and an electric discharge plasma are generated at a charging voltage of 2 kV of a capacitor bank with capacity of 14.4 mF using a coaxial magnetoplasma accelerator with a cylindrical electrically conducting shaft made of aluminium and a composite central electrode consisting of a tip made of aluminium and a shank of brass. Between the cylindrical electroconductive shaft of the accelerator made of aluminium and the tip of the central electrode made of aluminium on top of the current-conducting carbon layer deposited on the surface of the insulator and separating the electroconductive shaft from the central electrode, electrically fusible link is placed from a pressed mixture of powders of metal tungsten and technical carbon, taken in weight ratio W:C equal to 0.171:0.031. Arc discharge is initiated between the central electrode tip and the cylindrical electroconductive shaft during the capacitor bank discharge with the said fusible link transition to the plasma state, further interaction with aluminium produced by electroerosion from inner surface of aluminium cylindrical electroconductive shaft of accelerator, and formation of composite on inner surface of chamber.

EFFECT: disclosed is a method of producing a metal matrix composite from aluminium and tungsten carbide.

1 cl, 3 dwg