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Effect of Sintering Temperature to Physical, Magnetic Properties and Crystal Structure on Permanent Magnet BaFe12O19 Prepared From Mill Scale
| Content Provider | Scilit |
|---|---|
| Author | Ramlan Muljadi Sardjono, Priyo Gulo, Fakhili Setiabudidaya, Dedi |
| Copyright Year | 2017 |
| Description | Journal: Iop Conference Series: Materials Science and Engineering Permanent magnet of Barium hexa Ferrite with formula $BaFe_{12}O_{19}$ has been made by metallurgy powder method from raw materials : Barium carbonate $(BaCO_{3}$ E-merck) and Iron Oxide $(Fe_{2}O_{3}$ from mill scale). Both of raw materials have been mixed with stoichiometry composition by using a ball mill for 24 hours. The fine powder obtained from milling process was formed by using a hydraulic press at pressure 50 MPa and continued with sintering process. The sintering temperature was varied : 1150°C, 1200°C, 1250°C and 1300°C with holding time for 1 hour. The sintered samples were characterized such as : physical properties (bulk density, porosity and shrinkage), magnetic properties (flux density, remanence, coercivity and magnetic saturation) by using VSM and crystal structure by using XRD. According characterization results show that the crystal structure of $BaFe_{12}O_{19}$ does not change after sintering process, but the grain size tends to increase. The optimum condition is achieved at temperature 1250°C, and at this condition, the sample has characterization such as : bulk density = 4.35 $g/cm^{3}$, porosity = 1.03% and firing shrinkage = 11.63%, flux density = 681.1 Gauss, remanence (σr) = 20.78 emu/g, coercivity (Hc) = 2058 Oe and magnetic saturation (σs) 45.16 emu/g. |
| Related Links | http://iopscience.iop.org/article/10.1088/1757-899X/214/1/012009/pdf |
| ISSN | 17578981 |
| e-ISSN | 1757899X |
| DOI | 10.1088/1757-899x/214/1/012009 |
| Journal | Iop Conference Series: Materials Science and Engineering |
| Volume Number | 214 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2017-07-06 |
| Access Restriction | Open |
| Subject Keyword | Journal: Iop Conference Series: Materials Science and Engineering Magnetic Properties Crystal Structure Sintering Temperature Permanent Magnet Mill Scale |
| Content Type | Text |
| Resource Type | Article |
