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An investigation on the formation mechanism of nano ZrB2 powder by a magnesiothermic reaction

 

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Opened Access An investigation on the formation mechanism of nano ZrB2 powder by a magnesiothermic reaction
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Author: Jalaly, M.
Bafghi, M.Sh.
Tamizifar, M.
Gotor Martínez, Francisco José
Department: Universidad de Sevilla. Departamento de Química Inorgánica
Date: 2014
Published in: Journal of Alloys and Compounds, 588, 36-41.
Document type: Article
Abstract: Nanocrystalline zirconium diboride (ZrB2) powder was produced by mechanochemistry from the magnesiothermic reduction in the Mg/ZrO 2/B2O3 system. The use of high-energy milling conditions was essential to induce a mechanically induced self-sustaining reaction (MSR) and significantly reduce the milling time required for complete conversion. Under these conditions, it was found that the ignition time for ZrB2 formation was only about a few minutes. In this study, the mechanism for the formation of ZrB2 in this system was determined by studying the relevant sub-reactions, the effect of stoichiometry, and the thermal behavior of the system.
Cite: Jalaly, M., Bafghi, M.S., Tamizifar, M. y Gotor Martínez, F.J. (2014). An investigation on the formation mechanism of nano ZrB2 powder by a magnesiothermic reaction. Journal of Alloys and Compounds, 588, 36-41.
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URI: https://hdl.handle.net/11441/73378

DOI: 10.1016/j.jallcom.2013.11.050

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