THE INFLUENCE OF MECHANICAL ALLOYING DURATION ON SELECTED PROPERTIES OF SINTERED DISTALOY SE SAMPLES

The iron alloy powder - Distaloy SE was used for the investigations. The following series of samples were studied: pure Distaloy SE (reference sample), Distaloy SE infiltrated with Cu, Distaloy SE after mechanical alloying with subsequent infiltration, Distaloy SE with the addition of 10% wt. Cu treated by mechanical alloying. The compacts were produced using two compaction pressures - 300MPa and 500MPa. The compacts were sintered under a pure dry hydrogen atmosphere at 1120°C for 45min. The heating and cooling rates were the same for all cases. The time of mechanical alloying used for investigation was 60 min. The infiltration was carried out under a pure dry hydrogen atmosphere at 1120°C for 15min with 10K/min heating and cooling rates. This paper presents the results of mechanical alloying duration and infiltration on the selected properties of sinters. The range of the research included measurements of green compacts density, sintered density, hardness as well as tribological tests (friction coefficient measurements, weight loss measurements and wear trace observations).