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research
Mechanosynthesis of nanocrystalline ZrB2-based powders by mechanically induced self-sustaining reaction method
Authors
M. Sh Bafghi
Francisco José Gotor Martínez
M. Jalaly
M. Tamizifar
Publication date
1 January 2013
Publisher
'Maney Publishing'
Doi
Cite
Abstract
Preparation of nanocrystalline ZrB2-based powder by aluminothermic and magnesiothermic reductions in M/ZrO2/B 2O3 (M = Al or Mg) systems was investigated. In this research, high energy ball milling was employed to persuade necessary conditions for the occurrence of a mechanically induced self-sustaining reaction (MSR). The course of MSR reactions were recorded by a noticeable pressure rise in the system during milling. Ignition times for ZrB2 formation by aluminothermic and magnesiothermic reductions were found to be 13 and 6 min, respectively. Zirconium diboride formation mechanism in both systems was explained through the analysis of the relevant sub-reactions. © 2013 Institute of Materials, Minerals and Mining Published by Maney on behalf of the Institute.Gobierno de España No. MAT2011- 2298
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Last time updated on 15/05/2018