Paper Title:
In Situ Reaction Synthesis of Porous Silica-Matrix Ceramics
  Abstract

A novel technique was developed to synthesize porous silica–matrix ceramics from silicon carbide and alumina with an Y2O3 addition, using pine sawdust as a pore former. The porous ceramics were fabricated at temperatures of 1300–1500 oC in air by a reaction–bonding process based on two reactions: (1)SiC+2O2→SiO2+CO2 (Oxidation) and (2)2SiO2+3Al2O3→3Al2O3·2SiO2 (Mullitization). Reaction–bonding behavior, mechanical property and open porosity were investigated as a function of Y2O3 content as well as sintering temperature and holding time. Moreover, phase composition and microstructure of the porous silica–matrix ceramics were studied by X–ray diffraction (XRD) and scanning electron microscopy (SEM).

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
1143-1146
DOI
10.4028/www.scientific.net/KEM.280-283.1143
Citation
S. Q. Ding, D. L. Jiang, S. M. Zhu, "In Situ Reaction Synthesis of Porous Silica-Matrix Ceramics", Key Engineering Materials, Vols. 280-283, pp. 1143-1146, 2005
Online since
February 2007
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Price
$32.00
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