The effect of annealing and frequency of the external magnetic field on magnetic properties of nanostructured electrodeposit of the Ni86,0Fe9,8W1,3Cu2,9 alloy
| Autor: | Milica Spasojević, Milan Plazinic, Miroslav Spasojević, Milentije Lukovic, Aleksa Maričić |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Annealing (metallurgy) Alloy chemistry.chemical_element 02 engineering and technology Tungsten engineering.material 010402 general chemistry 01 natural sciences law.invention Crystal law Magnetic properties Electrochemistry General Materials Science Crystallization Composite material Coercivity 021001 nanoscience & nanotechnology Condensed Matter Physics X-ray structure determination Nanostructures 0104 chemical sciences Grain growth chemistry engineering 0210 nano-technology Solid solution |
| Zdroj: | Materials Chemistry and Physics |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2020.123513 |
| Popis: | A nanostructured powder of the Ni86,0Fe9,8W1,3Cu2,9 alloy is deposited on a titanium cathode by electrodeposition from the citrate bath, at the current density of 400 mA cm−2. The powder particles are of a cauliflower and dendritic shape and composed of nanocrystals of the FCC phase of the solid solution of iron, tungsten and copper in nickel, captive in an amorphous matrix. The freshly deposited powder is thermally stable up to 160 °C. The annealing of the powder in the temperature range from 160 °C to 460 °C results in its structure relaxation. At temperatures higher than 460 °C, the amorphous phase in the powder is crystalizing and crystal grains of the FCC solid solution are growing. The structural changes caused by annealing, affect magnetic properties of the alloy. The cooled powders after the structure relaxation have higher magnetic permeability, a lower loss of the active power and a lower coercive field. Crystallization of the amorphous phase and crystalline grain growth of the FCC phase causes a decrease in magnetic permeability, an increase in the power loss and the power of coercive field. |
| Databáze: | OpenAIRE |
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