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HomeKey Engineering MaterialsKey Engineering Materials Vol. 655The Formation of Alumina Ceramic Microspheres by...

The Formation of Alumina Ceramic Microspheres by Internal Gelation Process

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Abstract:

Alumina ceramic microspheres were prepared via internal gelation process. By dropping sol from a cold broth into hot silicone oil gelled microspheres would solidify within a few seconds by decomposition of hexamethylenetetramine (HMTA). The effect of the broth component on the performance of the broth and gelled microspheres obtained has been investigated. The Al₂O₃ ceramic microspheres can be obtained after aging, washing, drying and sintering. The Al₂O₃ microspheres prepared with optimized formulation have uniform size and good sphericity, with an average diameter of 690μm and crush strength of greater than 12N/sphere.

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Proceedings of the International Congress on Ceramics V

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Periodical:

Key Engineering Materials (Volume 655)

Pages:

103-107

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.655.103

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Online since:

July 2015

Authors:

Yong Gao, Jing Tao Ma, Xing Yu Zhao, Shao Chang Hao, Chang Sheng Deng*

Keywords:

Alumina, Broth Formulation, Internal Gelation Process, Microspheres

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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