Paper Title:
Pressureless Sintering the Al2O3/SiC Nanocomposites in Deoxidized Atmosphere
  Abstract

Many significant improvements have been shown in mechanical properties of ceramic nanocomposites with ceramic matrix being dispersed with second sub-micro sized (or nano-sized) phase. This study designed and fabricated Al2O3/SiC nanocomposites with a raw material used for 85% alumina as matrix and SiC grits in submicro-scale as dispersion phase via a controlled pressureless sintering in air. With coarse SiC powder as bed powder, both C and SiC powder making deoxidized atmosphere, 85Al2O3/SiC nanocomposites with different SiC contents were densified by pressureless sintering at low temperature. Fracture surface investigation indicated that dense nanocomposites with small grain size were produced. General material properties and microstructure were measured and characterized. The results showed that composites sintered in deoxidized atmosphere had better mechanical properties than those sintered in flowing argon.

  Info
Periodical
Key Engineering Materials (Volumes 280-283)
Edited by
Wei Pan, Jianghong Gong, Chang-Chun Ge and Jing-Feng Li
Pages
1093-1096
DOI
10.4028/www.scientific.net/KEM.280-283.1093
Citation
Z. Z. Peng, S. Cai, Y. W. Wang, H. Z. Wu, "Pressureless Sintering the Al2O3/SiC Nanocomposites in Deoxidized Atmosphere", Key Engineering Materials, Vols. 280-283, pp. 1093-1096, 2005
Online since
February 2007
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Price
$32.00
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