The Effect of Different Preparation Methods on the Microstructure of Zirconium Diboride Ceramic Powder

Abstract:

The melting point of zirconium diboride is up to 3245 ° C. It is concerned widespread as a high-temperature structural materials because of high melting point, high hardness, excellent electrical conductivity and good thermal conductivity. In this paper zirconium diboride powder was prepared by the carbothermic reduction and precursor pyrolysis. XRD, SEM and DTA were used to characterize the performance of the two powders. Results show that the median diameter of zirconium diboride powder prepared by solid phase is about 6μm, round in shape, is not conducive to the sintering. Zirconium diboride powder prepared by precursor pyrolysis is massive, which is deposited by the layers of zirconium diboride crystals.

• Periodical: Advanced Materials Research (Volume 624)
• Pages: 9-12
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.624.9
• Online since: December 2012
• Authors: Yan Yan Wang, Chang Ling Zhou, Chong Hai Wang, Rui Xiang Liu, Xi Zhu Lin, Hong Zhao Xu
• Keywords: Carbothermic Reduction, Precursor Pyrolysis, ZrB₂Powder

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