Study on Dispersion Behavior of Al₂O₃/ZrO₂ Composite Powder

Abstract:

nanocomposite used widely with the development of nanotechnology, and the dispersion of different composition is important. ZrO₂ often used as the second phase to improve the toughness of Al2O3 ceramics^[1,. nanoAl2O3 and ZrO2 are added to water to prepare suspension, and PVP was used as dispersant to improve the dispersion of suspension. The suspension of Al₂O₃ and ZrO₂ adjusted from 2 to 11 with the addition of dispersant is 0.5%. The flocculation of suspension was observed after 3h, 6h, 12h and 24h. Result shows that two kinds suspension dispersant better in acid liquid than in alkaline and natural liquid. The pH values that are choose as the best dispersion and flocculation are 5 and 7. Morphology and element distribution of composite powder are tested in the SEM. Results show that the composite powder is finely disseminated.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 100-103
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.100
• Online since: September 2013
• Authors: Jing Xu, Min Chen
• Keywords: Al₂O₃, Ceramic, Dispersion, Flocculation, Zro₂

References

[1] Wang Xin, Shan Yan, Yu Xuegang, et al, J of the Chinese ceramic society, 2003, 31(12): 1145-1149.

[2] Shan Yan, Wang Xin, Yu Xuegang, et al, J of the Chinese ceramic society, 2003, 31(3): 278-282.

[3] Zhu Shidong, Zhou Genshu, Cai Rui, et al Research of the nano-Materials at home and abroad , J of Heat Treament Technology and Equipment, 2010 31(3): 1-5.

[4] Gong Hongyu, Yin Yansheng, Wang xin, et al Progress in alumina nanocomposite, J. of Shandong University, 2002, 32(4): 327-332.

[5] Yuan Wenjun, Zhou Yongmin, reasons for Aggregation of Nanoparticles and Solutions, J of Materials Review, 2008, 22(Ⅻ): 59-61.