| Structure and Soft Magnetic Properties of a New Nanocrystalline Soft Magnetic FeSiBCuAl Alloy with High Bs of 1.8 T |
| Paper ID : 2544-UFGNSM13-FULL (R1) |
| Authors: |
|
Masoud Mousanataj1, farzad shahri *2, Reza Gholamipour3, Behdad Garmeh4 1Tehran, Iran University of Industries and Mines 2Azadegan high way, Entrance of Ahmad Abad Mostofi, Hassan Abad Khaleseh road, Shahid Ehsani Rad path 3Iranian Research Organization for Science and Technology (IROST) 4Iran University of Industries and Mines (IUIM) |
| Abstract: |
| The Fe–Si–B–Cu–Al nanocrystalline alloys exhibit high saturation magnetization (Ms) as well as low coercivity after nanocrystallization. Al addition is very effective in widening the optimum annealing temperature range and refining of bcc-Fe grain size in addition to the increasing of nanocrystalline grain density. In this work, we have studied the effects of the addition of Al (0-1.5 at. %) and heat-treatment on the structure and magnetic properties of rapidly quenched pure Fe81.3(SiB)18-xCu0.7Alx alloys prepared by the single roller melt spinning process. Two series of as-spun and heat-treated alloys, 430°C for 360 s in vacuum (10−6Torr), were studied using various techniques such as x-ray diffraction (XRD), differential scanning calorimetry (DSC), and vibrating sample magnetometer (VSM). XRD results showed that with Al addition up to 1 at%, very fine nanocrystalline α-Fe(Si) phases are nucleated. Also, Al addition up to 1 resulted in increasing of average grain size (D).DSC analysis showed that Al addition up to 1 atomic percent resulted in reduction of Tx1 and increasing of Tx2. The annealed alloy with x = 1at% showed the Ms of 1.87 T. |
| Keywords: |
| High Bs, Nanocrystalline soft magnet, Amorphous ribbons, Melt Spinning |
| Status : Paper Accepted (Poster Presentation) |
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