Morphology, structure and magnetic properties of spheres produced by Ar-He plasma
Vol. 25 No. 2 (2012), Research Papers
Vol. 25 No. 2 (2012)

Morphology, structure and magnetic properties of spheres produced by Ar-He plasma

Research Papers
Published 2012-06-15
Y. A. Perera Mercado
Centro de Investigación en Química Aplicada (CIQA)
E. Reyes Sandoval
Centro de Investigación en Química Aplicada (CIQA)
M. Lozano Estrada
Centro de Investigación en Química Aplicada (CIQA)
R. Betancourt Galindo
Centro de Investigación en Química Aplicada (CIQA)
E. M. Saucedo Salazar
Centro de Investigación en Química Aplicada (CIQA)
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Keywords

Plasma Ar-He
B.O.F. slags
magnetic spheres. Plasma Ar-He
escorias de B.O.F
esferas magnéticas.

How to Cite

Perera Mercado, Y. A., Reyes Sandoval, E., Lozano Estrada, M., Betancourt Galindo, R., & Saucedo Salazar, E. M. (2012). Morphology, structure and magnetic properties of spheres produced by Ar-He plasma. Superficies Y Vacío, 25(2), 70-74. Retrieved from https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/206
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Abstract

Magnetic spheres were produced by adaptating conventional Ar-He thermal spray processes. This process is based on the projection of different iron oxides-rich powder precursors which are common byproducts of diverse metallurgical industrial activities. Projected particles are trapped inside a special capturing device. Prior to the plasma processing, precursor materials were milled in order to homogenize their initial particle sizes. The produced magnetic particles showed a spherical morphology with different superficial structures. Their composition includes a mixture of crystalline phases that could be indexed to the magnetite (Fe3O4), maghemite (gamma-Fe2O3) and other phases depending on chemical composition of used precursor. Complete characterization of magnetic spheres was achieved by using several analysis techniques such as: X-ray diffraction (XRD), scanning electron microscopy (SEM), field emission scanning electron microscopy (FESEM), X-ray energy dispersive spectroscopy (EDS) and vibrational sample magnetometry (VSM).
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