METHOD OF PRODUCING INTERMETALLIC COMPOSITE MATERIALS BASED ON Fe POWDER SYSTEMS Fe-Al

摘要

FIELD: metallurgy.;SUBSTANCE: invention relates to powder metallurgy. Powders Fe, Al in the ratio of 70:30 are mixed in ball mill for 2–3 hours and degassed in vacuum chamber 1 at pressure 10 Pa. Obtained mixture is placed in container 2 made from carbon-fiber material and affected by plasma RFI discharge low-pressure. Plasma-forming gas used is argon with flow rate of 0.004÷0.005 g/s at its working pressure of 1.33÷133 Pa. Generator 5 electromagnetic field frequency is 1.76–13.56 MHz, power consumption is 2–18 kW, anode current value is 0.8÷1.2 A, voltage 7.8 kV. Pressure in discharge chamber 6 20÷30 Pa.;EFFECT: workpiece from intermetallic material has high strength characteristics.;1 cl, 2 dwg