Aqueous Gelcasting Synthesis of Zirconium Diboride

Article Preview

Abstract:

Zirconium diboride (ZrB2) ceramics were synthesized by Aqueous gelcasting method sintering effects of the additives were examined. The dispersion and rheological properties behavior of water-based gelcasting ZrB2-4wt.%B4C suspensions were characterized by zeta potential and viscosity measurements, respectively. A 50 vol.% ZrB2-4wt.%B4C suspension with a relative low viscosity was prepared with 3wt.% A70 and 4wt.% AM at pH = 11. Using the liquid desiccant drying method, the weight loss was 7.7 % after drying for 24 h, which is higher than the drying at RT (7.2 %).

You might also be interested in these eBooks

Info:

Periodical:

Pages:

31-34

Citation:

Online since:

November 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2015 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] T. Tsuchida, S. Yamamoto, MA-SHS and SPS of ZrB2-ZrC composites, Solid State Ionics, 172 (2004) 215-216.

DOI: 10.1016/j.ssi.2004.05.020

Google Scholar

[2] W. G. Fahrenholtz, G. E. Hilmas, I. G. Talmy, J. A. Zaykoski, Refractory diborides of zirconium and hafnium, J. Am. Ceram. Soc., 90 (2007) 1347-1364.

DOI: 10.1111/j.1551-2916.2007.01583.x

Google Scholar

[3] S. Q. Guo, Densification of ZrB2-based composites and their mechanical and physical properties: A review, J. Eur. Ceram. Soc., 29 (2009) 995-1011.

Google Scholar

[4] A. Rezaie, W. G. Fahrenholtz, G. E. Hilmas, Effect of hot pressing time and temperature on the microstructure and mechanical properties of ZrB2–SiC, J. Mater. Sci., 42 (2007) 2735-2744.

DOI: 10.1007/s10853-006-1274-2

Google Scholar

[5] H. L. Wang, D. L. Chen, C. A. Wang, R. Zhang, D. N. Fang, Preparation and characterization of high-toughness ZrB2/Mo composites by hot-pressing process, Int. J. Refract. Met. Hard Mater., 27 (2009) 1024-1026.

DOI: 10.1016/j.ijrmhm.2009.06.003

Google Scholar

[6] S. Q. Guo, T. Nishimura, Y. Kagawa, J. M. Yang, Spark Plasma Sintering of zirconium diborides, J. Am. Ceram. Soc., 91 (2008) 2848-2855.

DOI: 10.1111/j.1551-2916.2008.02587.x

Google Scholar

[7] A. Snyder, D. Quach, J. R. Groza , T. Fisher , S. Hodson, L. A. Stanciu, Spark Plasma Sintering of ZrB2-SiC-ZrC ultra-high temperature ceramics at 1800℃, Mater. Sci. Eng. A., 528 (2011) 6079-6082.

DOI: 10.1016/j.msea.2011.04.026

Google Scholar

[8] S. C. Zhang, G. E. Hilmas, W. G. Fahrenholtz, Pressureless densification of zirconium diboride with boron carbide additions, J. Am. Ceram. Soc., 89 (2006) 1544-1550.

DOI: 10.1111/j.1551-2916.2006.00949.x

Google Scholar

[9] W. M. Guo, G. J. Zhang, Z. G. Yang, Pressureless sintering of zirconium diboride ceramics with boron additive, J. Am. Ceram. Soc., 95 (2012) 2470-2473.

DOI: 10.1111/j.1551-2916.2012.05307.x

Google Scholar

[10] A. Young, O. Omatete, M. Janney, P. Menchhofer, Gelcasting of alumina, J. Am. Ceram. Soc., 74 (1991) 612-618.

DOI: 10.1111/j.1151-2916.1991.tb04068.x

Google Scholar

[11] R. J. He, P. Hu, X. H. Zhang, W. B. Han, C. C. Wei, Y. Hou, Preparation of high solid loading, low viscosity ZrB2-SiC aqueous suspensions using PEI as dispersant, Ceram. Int., 39 (2013) 2267-2274.

DOI: 10.1016/j.ceramint.2012.08.073

Google Scholar

[12] J. Yin, X. J. Liu, H. Zhang, Y. J. Yan, Z. R. Huang, Y. Yang, D. L. Jiang, Dispersion and gelcasting of zirconium diboride through aqueous route, Int. J. Appl. Ceram. Technol., 10 (2013) 226-233.

DOI: 10.1111/j.1744-7402.2012.02803.x

Google Scholar

[13] A. Barati, M. Kokabi, M. Hossein, N. Famili, Drying of gelcast ceramic parts via the liquid desiccant method, J. Eur. Ceram. Soc., 23 (2003) 2265-2272.

DOI: 10.1016/s0955-2219(03)00045-1

Google Scholar

[14] Z. H. Lü, D. L. Jiang, J. X. Zhang, Q. L. Lin, Aqueous tape casting of zirconium diboride, J. Am. Ceram. Soc., 92 (2009) 2212-2217.

DOI: 10.1111/j.1551-2916.2009.03222.x

Google Scholar