Preparation of Zirconium, Titanium, and Magnesium Diborides by Metallothermic Reduction

Preparation of Zirconium, Titanium, and Magnesium Diborides by Metallothermic Reduction Ceramic compositions based on carbides, nitrides, and borides are widely used as a result of their exceptional resistance to wear, creep at high temperature, thermal shock, and oxidation. In order to provide these properties, it is necessary to prepare a starting powder material structure characterized by uniformity and high specific surface. Zirconium, titanium, and magnesium diborides are prepared in this work by metallothermic reduction. The materials obtained are analyzed by x-ray diffraction (XRD), laser granulometry, scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS). Thermodynamic calculations are carried out using FactSage® thermochemical software and databases. It is observed that a significant part of the specimens obtained in this work have a high MgO content in their structure. Apotential field of application of these materials could be as antioxidants in periclase-carbon refractories since this industrial application does not require magnesium oxide removal. It is clearly established that magnesium, zirconium, and titanium diborides exhibit good stability in reducing atmospheres. Refractories and Industrial Ceramics Springer Journals

Preparation of Zirconium, Titanium, and Magnesium Diborides by Metallothermic Reduction

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Springer US
Copyright © 2014 by Springer Science+Business Media New York
Material Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Methods
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