Preparation and Characterization of Porous Alumina Insulation Materials by Gel-Foaming

Abstract:

Porous alumina insulation materials were prepared by the combination method of gelcasting and foaming. The effects of the amount of blowing agent, the solid volume, and the sintering temperature on porosity of aluminum oxide ceramic were studied. The result showed that, when the amount of blowing agent is 1wt %, the solid volume is 45vol % and the sintering temperature is 1500°C, the porous alumina ceramics with high porosity, small pore diameters, evenly distributed, high bending strength and low heat conductance can prepared.

• Periodical: Advanced Materials Research (Volume 412)
• Pages: 207-210
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.412.207
• Online since: November 2011
• Authors: Lin Zhang, Jing Hong Du, Guo You Gan, Ji Kang Yan, Jian Hong Yi
• Keywords: Gel-Foaming, Insulation, Porous Alumina

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