| Autor: |
Ramlan, R., Bama, A. Amminudin, Virgo, Frinsyah, Supardi, S., Tambunan, Melenia |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2913 Issue 1, p1-7, 7p |
| Abstrakt: |
The manufacture of Ba-ferrite magnets using additives Na2O was to determine the effect of the composition on physical properties, magnetic properties and crystal structure. Composition of the addictive ingredients used is, 1%, 1.5% and 1% Calc. 1.5 Calc additives which are calcined for 1 hour (1000 ˚C) a total mass of 30 grams. The powder was milled by ball mill for 3 hours and then dried using oven after that followed by the calcination process at 1000oC. Then printing pellets using a hydraulic press with a diameter of 18 mm and a thickness of 6 mm. Next the sintering process used vacuum furnace at 1000°C. The results characterization of the porosity decreasing of the sample through the process calcined or without calcination. Result VSM of coercivity 1.1191 kOe of 1% additives. The XRD analysis results showed a single phase in the sample with a calcination process. Whereas in the sample without calcination, 3 phases appeared the BaFe12O19, Na2O and Fe3O4 phases. The results of the calculation of the crystal size obtained a large size difference ratio against samples through calcination. In the SEM test results, there is a cavity width ± 5 µm - 25 µm which has a grain size ± 2.5 µm - 10 µm with various shapes. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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