The role of processing conditions on the magnetic properties of insulated iron powder compounds at low frequencies

The main aim of the paper are analysis the effect of the processing conditions on the magnetic behaviour of iron insulated powder compound (IIPC) materials admixed by aluminium alloy at low frequencies. Results show that the higher applied compactive pressures cause a greater reduction of volumes and of present porosities. The behaviour of powders during the pressing process and heat treatment is important question in the improving of IIPC materials to give a suitable combination between pressing pressure, sintering temperature and time as well as magnetic properties. The coercivity and the remanence increased with increasing applied pressure that is also attributed to the enhanced densification and promote porosity reduction. However, the subsequent decrease of remanence and increase of coercivity are observed in terms of addition of aluminium alloys.