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All Journal JMES: The International Journal of Mechanical Engineering and Sciences
Darminto
Department of Physics, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
Energy Materials Science & Nanotechnology Mechanical Engineering

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Incorporating Semiautomatic Coprecipitation Apparatus and Gas Nitriding for Synthesis of Iron Nitride from Natural Iron Sand Indra Sidharta; Intan Y. P. Perindasari; Darminto; Abdullah Shahab
JMES: The International Journal of Mechanical Engineering and Sciences Vol 10 No 2 (2026)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25807471.v10i2.10149

Abstract

This study aimed to synthesize iron nitride (Fe3N) material using Fe3O4 as the starting material. The synthesis process included coprecipitation of natural iron sand and gas nitriding under flowing NH3 gas. Semiautomatic coprecipitation apparatus was implemented during coprecipitation process, to improve powder yield and reproducibility of Fe3O4 nanopowders. The results of XRD and SEM showed that the semiautomatic coprecipitation apparatus could produce consistent product in terms of final quantity and powder morphology. Furthermore, Fe3N was produced after gas nitriding for different holding times. Iron oxides, Fe3O4 and Fe2O3, were still detected in the powder, showing that nitriding parameter was insufficient to produce Fe3N completely. VSM measurement on the final powder showed typical soft magnetic behavior, with maximum saturation magnetization of 17.21 emu/g and coercivity at 0.04 Oe after 6 hours of nitriding. This study provided an alternative method for local soft magnetic composite production using abundant Indonesian resources.
Co-Authors Abdullah Shahab Indra Sidharta Intan Y. P. Perindasari