The formation of structure and phase composition and magnetic properties of Fe(Fe3C, Fe5SiC)-SiO2 nanocomposites upon mechanical alloying

Structural and phase transformations that occur in Fe(Fe 3 C, Fe 3 SiC)-SiO 2 (amorphous quartz) systems during mechanical alloying in an Ar atmosphere and in air have been studied by X-ray diffraction, Mössbauer spectroscopy, IR spectroscopy, electron microscopy, and magnetometry. It has been shown...

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Bibliographic Details
Published in:Physics of metals and metallography 2010-05, Vol.109 (5), p.534-546
Main Authors: Lomaeva, S. F., Maratkanova, A. N., Nemtsova, O. M., Chulkina, A. A., Bokhonov, B. B., Ancharov, A. I., Elsukov, E. P.
Format: Article
Language:English
Subjects:
Atmospheres
Chemistry and Materials Science
Diffraction
Ferrous alloys
Magnetic properties
Materials Science
Mechanical alloying
Metallic Materials
Mossbauer spectroscopy
Phase composition
X-rays
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Summary:Structural and phase transformations that occur in Fe(Fe 3 C, Fe 3 SiC)-SiO 2 (amorphous quartz) systems during mechanical alloying in an Ar atmosphere and in air have been studied by X-ray diffraction, Mössbauer spectroscopy, IR spectroscopy, electron microscopy, and magnetometry. It has been shown that the mechanoactivation treatment leads to the formation of isolated particles 2–20 nm in size with a complex phase composition (Fe, FeSi alloy, oxides, silicates, and carbides), which depends on the milling atmosphere. It has been found out that the magnetic properties of such systems strongly depend on the oxygen and carbon compounds existing in the system, which cannot be detected by X-ray diffraction, but their presence is testified by the data of Mössbauer spectroscopy.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X10050145