2014•Diffusion and defect data, solid state data. Part B, Solid state phenomena/Solid state phenomenaRequires access
Synthesis of the Fe-10%Si Nanocrystalline Powder by Mechanical Alloying
Cristina Daniela Stanciu, Traian Florin Marinca, Florin Popa, I. Chicinaş, O. Isnard
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Abstract
Fe-Si alloy with a Si content of 10 wt. % was obtained in nanocrystalline state by mechanical alloying of elemental iron and silicon powders. The mechanical alloying process was carried out in a high energy ball mill (Fritsch, Pulverisette 4) in argon atmosphere. The X-ray diffraction (XRD) studies indicated that after 4 hours of milling the Fe-Si alloy is formed. The mean crystallites size decreases down to 7 nm after 8 hours of milling. The particles morphology investigated by scanning electron microscopy (SEM) showed an evolution during milling process from two different kinds of particles to a one kind of particles with irregular shape. The magnetisation of powders decreases upon increasing the milling time up to 4 hours as a consequence of the Fe-Si alloy formation.