Two Fe-Zr-B-Cu Nanocrystalline Magnetic Alloys Produced by Mechanical Alloying Technique

Fe-rich soft magnetic alloys are candidates for applications as sensors and actuators. Spring magnets can be obtained when these added to hard compounds. In this work, two nanocrystalline Fe-Zr-B-Cu produced by mechanical alloying, MA. The increase in boron content favours the reduction of crystalline size. Thermal analysis (by differential scanning calorimetry) shows that, temperature range compressed between 450 650 K, wide exothermic processes take place, which associated with relaxation tensions At high temperatures, a main crystallisation peak is found. A Kissinger an isoconversional method were used determine apparent activation processes. values compared those found scientific literature. Likewise, adapted thermogravimetry allowed determination Curie temperature. functional response has been analysed hysteresis loop cycles. According composition, decrease Fe/B ratio diminishes behaviour.