SINTESIS γ-Fe2O3 / Fe3O4 DARI MILL SCALE PABRIK BAJA DENGAN METODE PRESIPITASI
Keywords:
γ-Fe2O3 / Fe3O4, Mill Scale, Presipitasi, PrecipitationAbstract
SINTESIS γ-Fe2O3/Fe3O4 DARI MILL SCALE PABRIK BAJA DENGAN METODE PRESIPITASI. Mill scale yang digunakan dalam penelitian ini, berdasarkan hasil karakterisasi fasa menggunakan data difraksi sinar-x (XRD) dan perangkat lunak analisis kristal RIETAN-2000, mengandung 85,84 % berat FeO dan 14,16 % berat Fe3O4. Dari hasil proses dengan menggunakan metode presipitasi diperoleh serbuk oksida besi dengan sistem fasa γ-Fe2O3 / Fe3O4, dan ukuran kristalin 27,19 nm. Di sini terjadi peningkatan fasa γ-Fe2O3 / Fe3O4 sebesar ~86 % dari mill scale awal. Sebagai pembanding digunakan Fe3O4 Aldrich (63-7106) yang mempunyai fasa Fe3O4 dengan ukuran kristalin 27,49 nm. Pengukuran sifat magnetik dengan vibrating sample magnetometer (VSM) menunjukkan bahwa serbuk magnet oksida besi hasil proses mempunyai harga magnetisasi saturasi lebih tinggi dibandingkan dengan produk Fe3O4 Aldrich (63-7106) masing-masing adalah 84 emu/gram dan 72 emu/gram.
ABSTRACT
SYNTHESIS OF γ-Fe2O3/Fe3O4 FROM MILL SCALE BY PRECIPITATION METHOD. The mill scale used in this experiment, based on phase characterization by x-ray diffraction (XRD) and RIETAN 2000 software, consist of 85.84 wt % FeO and 14.16 wt % Fe3O4. Precipitacion process of this mill scale produce powder of iron oxide with γ-Fe2O3 /Fe3O4 phase system and crystalline size of 27.19 nm. There is ~86% enhancement of γ-Fe2O3 / Fe3O4 phase from the origin mill scale. As comparison, we used Fe3O4 Aldrich (63-7106) having Fe3O4 phase system and crystalline size of 27.49 nm. Magnetic measurement using Vibrating Sample Magnetometer (VSM) showed that mill scale processed iron oxide powder has higher saturation magnetization than Fe3O4Aldrich (63-7106), which are 84 and 72 emu/gram, respectively.
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