期刊
JOURNAL OF ADVANCED CERAMICS
卷 6, 期 2, 页码 139-148出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s40145-017-0226-4
关键词
ZrB2; ZrO2; zircon (ZrSiO4); composites; synthesis
资金
- Defence Research and Development Organization, Ministry of Defence, Government of India, New Delhi [295]
ZrB2 and ZrB2-SiC powders have been produced by reducing ZrO2 and ZrSiO4 with B4C without using any furnace. Magnesium was added to the mixtures of (ZrO2+B4C) and (ZrSiO4+B4C). The reaction has been assisted by a floral thermite packed around the compacts. By introducing elemental Si into (ZrO2+B4C) mixture, composite powders of ZrB2-SiC formed. After leaching out MgO with suitable HCl water solution, the product was analysed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The effect of Si, B4C, and Mg on the extent of formation of ZrB2, ZrB2-SiC, and other phases has been studied. Formation of nano-sized ZrB2 and ZrB2-SiC composite powders was identified. The adaptability of the process for bulk production was examined.
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