Effect of Ge addition on structure and soft magnetic properties of Si-rich Fe-based nanocrystalline alloys
| Autor: | Zhong-yan Xie, Zhi Wang, Ying Han |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Materials science Amorphous metal Mechanical Engineering Alloy Metals and Alloys Analytical chemistry 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Nanocrystalline material Crystallography Magnetic shape-memory alloy Mechanics of Materials Phase (matter) 0103 physical sciences Materials Chemistry engineering Curie temperature Melt spinning 0210 nano-technology |
| Zdroj: | Journal of Alloys and Compounds. 672:332-335 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/j.jallcom.2016.02.030 |
| Popis: | Soft magnetic Fe72.7Al0.8Si17.5B5Cu1Nb3-xGex (x = 0, 0.2, 0.4, 0.6, 0.8 and 1.0) amorphous alloys were produced by the single roller melt spinning method. The effects of Ge substitution for Nb on the microstructure and magnetic properties were investigated. Magnetic properties of all the alloys annealed at different temperatures were measured by the temperature dependence of initial permeability (μi-T curves) from the ambient temperature up to 650 °C. Structure and crystalline process have been analyzed by XRD patterns and DSC curves, respectively. Partial substitution of Nb by Ge enhanced the Curie temperatures of amorphous phase and crystalline phase, and therefore improved the soft magnetic properties at high temperature. The Fe72.7Al0.8Si17.5B5Cu1Nb2.6Ge0.4 alloy annealed at 570 °C for 0.5 h shows the optimum high-temperature μi, together with higher room-temperature μi. The origin of the improved magnetic softness both at room- and high-temperature was analyzed. |
| Databáze: | OpenAIRE |
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