Influence of Synthesis Process on Coated Properties of Al(OH)₃-Y(OH)₃/ZrB₂ Composite Powders

Abstract:

Zirconium diboride (ZrB₂) ceramics with high melting point, high hardness, good electrical and thermal conductivity, good neutron control and other characteristics, can be widely used in high-temperature structural ceramics, composite materials, electrode materials. In order to improve ZrB₂ difficult densification and high-temperature oxidation, the properties of coated Al (OH)₃-Y(OH)₃/ZrB₂ composite powders prepared by co-precipitation method were investigated in this paper, The conclusions are shown that the effect of coated composite powders is getting worse with the accelerated titration rates. the coating effect will be worse with the increasing reaction time. When the concentration of mixed solution is lower, the coated effect is better. When the synthesis condition is that the titration rate of 10ml/min, and the reaction time was 1h, mixed solution ion concentration of Y³⁺=0.119mol/L and Al³⁺=0.231mol/L, the coated effect of composite powders is better.

• Periodical: Key Engineering Materials (Volume 726)
• Pages: 164-168
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.726.164
• Online since: January 2017
• Authors: Jie Guang Song, Xiu Qin Wang, Fang Wang, Ning Liu, Shi Zhe Li, Ting Ting Xia, Si Yuan Yu, Shi Bin Li, Lin Chen
• Keywords: Composite Powders, Synthesis Process, Ultral High-Temperature, ZrB₂

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