Paper Title:
Mechanical Properties of α- and β-SiAlON Composite Ceramics Using β-SiAlON Powder
  Abstract

β-SiAlON powder was used as a raw powder to fabricate α/β-SiAlON composite ceramics with different rare earth elements. The phases present in the sample fabricated from -SiAlON, α-Si3N4, AlN, and rare earth oxide powders were - and -SiAlONs. The composition was dependent on the chemical composition and firing profile. The sample obtained by adding Yb2O3 had a high -SiAlON content. The /-SiAlON composite ceramics had high densit. Their microstructures depended on the used metal oxides, namely, the addition of Nd2O3 and CaCO3 resulted in the elongation of the -SiAlON grains. The bending strength, fracture toughness, and hardness were influenced by the -SiAlON content, amount of elongated grains, and density of the sample.

  Info
Periodical
Edited by
Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo
Pages
111-114
DOI
10.4028/www.scientific.net/KEM.403.111
Citation
K. Asakoshi, J. Tatami, K. Komeya, T. Meguro, M. Yokouchi, "Mechanical Properties of α- and β-SiAlON Composite Ceramics Using β-SiAlON Powder", Key Engineering Materials, Vol. 403, pp. 111-114, 2009
Online since
December 2008
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$32.00
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