Superior high-temperature magnetic softness for Co and Ge doped nanocrystalline Fe72.7Al0.8Si17.5B5Cu1Nb3 alloys
| Autor: | Zhi Wang, Zhong-yan Xie, Yurong Jia, Hongjun Duan |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Doping Alloy Analytical chemistry 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics Microstructure 01 natural sciences Amorphous phase Nanocrystalline material Electronic Optical and Magnetic Materials law.invention law 0103 physical sciences Initial permeability engineering Curie temperature Crystallization 0210 nano-technology |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 460:495-500 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2018.02.002 |
| Popis: | The complex impact of partially substituting Fe and Nb by Co and Ge on the thermal, microstructural and soft magnetic characteristics was investigated for melt spun and annealed Fe72.7-xCoxAl0.8Si17.5B5Cu1Nb3-yGey (x = 4, 8; y = 0, 0.4) alloys. The onset temperatures of the primary crystalline (Tx1) and the secondary crystalline (Tx2) are both declined and the Curie temperature of amorphous phase (TCam) is enhanced when Co content increase from x = 4 to x = 8. Although the crystallization temperatures are not affected by the partial substitution of Nb with Ge for x = 8, the TCam increases with respect to the alloy without Ge. When Co content x = 4, Ge substitution is found to not only decrease the Tx1 but also enhance the TCam. Fe64.7Co8Al0.8Si17.5B5Cu1Nb2.6Ge0.4 alloy has the highest TCam about 410 °C in all investigated alloys, and exhibits excellent high-temperature magnetic properties, and its higher initial permeability μi about 5000 at 10 kHz can be held up to 475 °C, which exhibits a potential prospect for the elevated temperature application. |
| Databáze: | OpenAIRE |
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