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Dispersion and Gelcasting of Zirconium Diboride through Aqueous Route

Authors

  • Jie Yin,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    3. Graduate School of the Chinese Academy of Sciences, Beijing, China
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  • Xuejian Liu,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    3. Graduate School of the Chinese Academy of Sciences, Beijing, China
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  • Hui Zhang,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    3. Graduate School of the Chinese Academy of Sciences, Beijing, China
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  • Yongjie Yan,

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    3. Graduate School of the Chinese Academy of Sciences, Beijing, China
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  • Zhengren Huang,

    Corresponding author
    1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing, China
    • State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
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  • Yong Yang,

    Corresponding author
    1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    2. Graduate School of the Chinese Academy of Sciences, Beijing, China
    • State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
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  • Dongliang Jiang

    1. State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai, People‘s Republic of China
    2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, People‘s Republic of China
    3. Graduate School of the Chinese Academy of Sciences, Beijing, China
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zhrhuang@mail.sic.ac.cn

yangyong@mail.sic.ac.cn

Abstract

The dispersion of highly concentrated Zirconium diboride (ZrB2) suspension in aqueous media was investigated in terms of zeta potential and rheological measurements, with a salt of polyacrylate polymer (SD-07) as dispersant. The adsorption behavior of SD-07 on ZrB2 particle surface was also studied. Results showed that acid cleaning improved the fluidity of aqueous ZrB2 slurry. Concentrated (up to 50 vol%) and well-stabilized suspension was obtained in the alkaline pH region, with 0.60 mg/m2 SD-07. On this basis, 50 vol% ZrB2 gelcasting slurry was prepared. The linear shrinkage and flexural strength of as-casted green body were (3.42 ± 0.13)% and (9.4 ± 0.3) MPa, respectively.

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