Abstract
ZrB2 powders were synthesized using B4C of different particle sizes through boro/carbo thermal reduction (BCTR) of ZrO2 with B4C and carbon as reducing agents. The XRD patterns of all the five different powders produced were similar and showed ZrB2 as a major phase. An increase in B4C particle size showed a significant increase in oxygen and carbon content and the size of agglomerates of the synthesized powders. Even though, the average size of the ZrB2 particles associated with all the agglomerates were same. It was concluded that B4C of fine particle size is necessary for the synthesis of ZrB2 powder with low oxygen and carbon content and lower agglomerates sizes. The synthesis route also provided a novel route to synthesize ZrB2 powder with the required size of agglomerates.
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Acknowledgements
The authors thankfully acknowledge the financial support received from DRDO, Govt. of India in order to carry out the present research study. We are also thankful to N. D. VaraPrasad, J. Vimala S. Venkat, and K. R. Iyanger, for their valuable support in the characterisation of the ZrB2 powder samples. We are grateful to the Director, Defence Metallurgical Research Laboratory (DMRL), Hyderabad for giving permission to publish this article.
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Murthy, S.S.N., Patel, M., Reddy, J.J. et al. Influence of B4C Particle Size on the Synthesis of ZrB2 by Boro/Carbothermal Reduction Method. Trans Indian Inst Met 71, 57–65 (2018). https://doi.org/10.1007/s12666-017-1155-1
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DOI: https://doi.org/10.1007/s12666-017-1155-1