FIELD: process engineering.
SUBSTANCE: invention relates to powder metallurgy, particularly, to iron-based composition and to production of diffusion-alloyed powder. Said diffusion-alloyed powder is produced by mixing iron powder or iron-based powder with alloying powder particles containing copper and nickel and heating produced mix in nonoxidising or reducing medium to 500-1000°C for 10-120 minutes for bonding of alloying powder particles with base powder surface. Granulometric composition of alloying powder particles of copper and nickel is such that D50 makes less than 15 mcm. Total content of copper and nickel makes at least 20 wt % at copper content over 4 wt % and Cu:Ni varying from 9/1 to 3/1.
EFFECT: sintered parts feature minimum size variation during sintering.
15 cl, 3 dwg, 6 tbl, 2 ex
