Effect of heat treatment on the microstructure and soft magnetic properties of nanocrystalline Fe80.5−xCoxCu1.5Si4B14 alloys (x = 0, 2, 4, 10)
| Autor: | Rui-min Shi, Zhi Wang, Hong-jun Duan |
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| Rok vydání: | 2021 |
| Předmět: |
Amorphous metal
Materials science Annealing (metallurgy) Alloy Coercivity engineering.material Condensed Matter Physics Microstructure Atomic and Molecular Physics and Optics Nanocrystalline material Electronic Optical and Magnetic Materials law.invention law engineering Curie temperature Electrical and Electronic Engineering Crystallization Composite material |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 32:19110-19116 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-021-06429-w |
| Popis: | The improvement of soft magnetic properties at elevated temperature was realized by doping Co into the Nb-free Fe80.5Cu1.5Si4B14 alloy. The Curie temperature of amorphous alloy TC increases to 400 °C when 10 at.% Fe is substituted by Co. For the nanocrystalline Fe70.5Co10Cu1.5Si4B14 alloy, a considerable initial permeability μi can be maintained above 450 °C, which is much higher than the TC of amorphous alloy. It is found that the cyclic annealing is effective to improve the saturation flux density BS, which is attributed to the enhanced crystallization volume fraction. Especially for the nanocrystalline Fe78.5Co2Cu1.5Si4B14 alloy, the BS is increased to 1.83 T. Furthermore, the cyclic annealing reduces the grain size, giving rise to the decrease of coercivity HC and the increase of μi. |
| Databáze: | OpenAIRE |
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