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Magnetic characterization of dual phase FeZrB soft magnetic alloy |
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| Authors: | LH Kong RR ChenTT Song YL Gao QJ Zhai |
| Institution: | a Laboratory for Microstructures, Shanghai University, Shanghai 200436, PR China b School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, PR China c School of Materials Science and Engineering, Shanghai University, Shanghai 200072, PR China d Laboratory for Materials, Sany Pumping Research Institute, Changsha 410100, PR China |
| Abstract: | The magnetic properties and the annealing process of Fe78Zr7B15 amorphous ribbons are investigated by X-ray diffraction (XRD), differential scanning calorimetry, and vibrating sample magnetometer. The fully amorphous structure of the as-quenched ribbons is confirmed by the XRD pattern. The Curie temperature and the saturation magnetization Ms of the ribbons are 305 °C and 124.3 emu/g, respectively. Annealing at 550 °C can result in an increase in Ms with annealing time due to the increasing crystallized volume fraction of α-Fe phase. The optimized annealing process is established at 550 °C for 20-30 min with maximum Ms of 146.6 emu/g. The morphology of the ribbons annealed at 550 °C is observed by scanning electron microscopy, showing that nanocrystalline α-Fe grains are dispersed in an amorphous matrix. |
| Keywords: | Amorphous Crystallization Dual phase structure Saturation magnetization |
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