Effect of Solid Content on Performance of Porous Alumina Ceramic by Gel-Foaming

Xing Xing Chen; Jing Hong Du; Guo You Gan; Ji Kang Yan; Jian Hong Yi

doi:10.4028/www.scientific.net/AMR.476-478.1007

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 476-478Effect of Solid Content on Performance of Porous...

Effect of Solid Content on Performance of Porous Alumina Ceramic by Gel-Foaming

Abstract:

Porous alumina ceramic was prepared using sodium dodecyl benzene sulfonate (SDBS) as foaming agent by the combination method of gel casting and foaming. The effect of solid content on the line shrinkage rate, the porosity, the fracture strength and the microscopic structure of porous aluminum ceramic were studied. The result showed that when solid content increased, the line shrinkage rate of porous alumina ceramic decreased form 20% to 1.2%, the total porosity first increased and then decreased from 43% to 57%, the fracture strength first decreased and then increased from 23MPa to 41MPa. SEM indicated that alumina ceramic had more open pores when solid content was too low, the number of closed pore increased along with solid content rising, when solid content was too high, pore size distribution uniformity decreased.

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Periodical:

Advanced Materials Research (Volumes 476-478)

Pages:

1007-1010

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.476-478.1007

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Online since:

February 2012

Authors:

Xing Xing Chen, Jing Hong Du, Guo You Gan, Ji Kang Yan, Jian Hong Yi

Keywords:

Gel-Foaming, Porous Alumina Ceramic, Solid Content

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