Details

Autor(en) / Beteiligte

• Jalaly, M.
• Bafghi, M.Sh
• Tamizifar, M.
• Gotor, F.J.

Titel

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

Ist Teil von

• Journal of alloys and compounds, 2014-03, Vol.588, p.36-41

Ort / Verlag

Kidlington: Elsevier B.V

Erscheinungsjahr

2014

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Synthesis of zirconium diboride by magnesiothermic reduction.•Using high energy ball milling to perform mechanochemical reactions.•Study of mechanism of ZrB2 synthesis by studying subreactions and thermal analysis. Nanocrystalline zirconium diboride (ZrB2) powder was produced by mechanochemistry from the magnesiothermic reduction in the Mg/ZrO2/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.