THE INFLUENCE OF ADDITION ELEMENTS ON SINTERED IRON COMPACTS MICROHARDNESS

antifriction Materials based on iron powder, with several addition elements were developed using PM technologies. The samples were obtained by uniaxially cold compaction using pressure forces of 300 MPa and sintering in dry hydrogen atmosphere at three different temperatures. In this study the effect of copper, in and lead addition elements on Vickers hardness and microhardness as a function of process parameters was investigated. Vickers hardness was evaluated at an indentation load of 50 N and Vickers microhardness was evaluated at an indentation load of 0.1 N.