Study of soft magnetic composites of iron coated with nanoparticles dispersion in liquid glass
| Autor: | A.N. Klein, V. Drago, Ricardo De Araujo Elias, Cristiano Binder, A.I. Ramos Filho, Nelson Jhoe Batistela, Gisele Hammes, Leandro Lima Evangelista, Gustavo Tontini |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Thermogravimetric analysis Materials science Scanning electron microscope Thermal resistance Nanoparticle Sodium silicate 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Coating Electrical resistivity and conductivity 0103 physical sciences engineering Composite material 0210 nano-technology Relative permeability |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 487:165351 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2019.165351 |
| Popis: | This work presents the study and development of soft magnetic composites of iron coated with alumina nanoparticles dispersed in sodium silicate, also known as liquid glass. It is proposed that the nanoparticles dispersion increases the thermal resistance of the glassy coating, allowing a heat treatment with higher temperatures, reducing the internal stresses generated during the pressing and reducing core losses. Thermogravimetric analysis under an oxidative atmosphere of the powder samples and Scanning electron microscopy and energy-dispersive X-ray diffraction of fractured compacted samples are shown to discuss the coating thermal behavior. Also, electrical resistivity, relative permeability and magnetic losses of samples with and without nanoparticles dispersed in sodium silicate are shown discussing their loss separation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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