Fracture Toughness of Si3N4 Based Ceramics with Rare-Earth Oxide Sintering Additives

Peter Tatarko; Štefánia Lojanová; Ján Dusza; Pavol Šajgalík

doi:10.4028/www.scientific.net/KEM.409.377

Paper Titles

The Compressibility Behaviour of a New Generation of Coated Metal/Ceramic Composite Powders
p.362

Impedance Changes and Carbon Stability during the Heat Treatment of Si₃N₄–Carbon Composites
p.365

The Milling Time Effect on Sintering Kinetics of Silicon Nitride Based Composites
p.369

Creep of FINEMET Alloy at Amorphous to Nanocrystalline Transition
p.373

Fracture Toughness of Si₃N₄ Based Ceramics with Rare-Earth Oxide Sintering Additives
p.377

Chemical Methods for Scanning Electron Microscope Characterization of Non-Oxide Ceramics and Composites
p.382

Brittle Intergranular Failure in Grain Aggregates - A Computer Simulation by Means of the Graphics Processing Unit
p.386

Wear of TiCN Coated Sintered Fe-1.5Cr-0.2Mo-0.7C Steels
p.390

Quantitative Description of Overlaps on Sialon Ceramics Fractures by the Multifractal Method
p.394

HomeKey Engineering MaterialsKey Engineering Materials Vol. 409Fracture Toughness of Si3N4 Based Ceramics with...

Fracture Toughness of Si₃N₄ Based Ceramics with Rare-Earth Oxide Sintering Additives

Abstract:

Fracture toughness of hot-pressed silicon nitride and Si3N4+SiC nanocomposites prepared with different rare-earth oxides (La2O3, Sm2O3, Y2O3, Yb2O3, Lu2O3) sintering additives have been investigated by Chevron Notched Beam, Indentation Strength and Indentation Fracture techniques. The fracture toughness values of composites were lower due to the finer microstructures and the lack of toughening mechanisms. In the Si3N4 with higher aspect ratio (Lu or Yb additives) crack deflection occurred more frequently compared to the Si3N4 doped with La or Y, which was responsible for the higher fracture toughness.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Key Engineering Materials (Volume 409)

Pages:

377-381

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.409.377

Citation:

Cite this paper

Online since:

March 2009

Authors:

Peter Tatarko, Štefánia Lojanová, Ján Dusza, Pavol Šajgalík

Keywords:

Si₃N₄, Fracture Toughness, Rare Earth Oxide, Si₃N₄/SiC Nanocomposites

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] R.L. Satet and M.J. Hoffmann: J. Am. Ceram. Soc. Vol. 88, No. 9 (2005), p.2485.

Google Scholar

[2] R.L. Satet, M.J. Hoffmann and R.M. Cannon: Mater. Sci. Eng. A Vol. 422 (2006), p.66.

Google Scholar

[3] M. Kitayama, K. Hirao and S. Kanzaki: J. Am. Ceram. Soc. Vol. 89, No. 8 (2006), p.2612.

Google Scholar

[4] P.F. Becher, G.S. Painter, N. Shibata, S.B. Waters and H.T. Lin: J. Am. Ceram. Soc. Vol. 91 No. 7 (2008), p.2328.

Google Scholar

[5] T. Nakayasu, T. Yamada, I. Tanaka and H. Adachi: J. Am. Ceram. Soc. Vol. 80, No. 10 (1997), p.2525.

Google Scholar

[6] H. Park and H.E. Kim: J. Am. Ceram. Soc., Vol. 80, No. 3 (1997), p.750.

Google Scholar

[7] Ch.M. Wang, X. Pan, M.J. Hoffmann, R.M. Cannon and M. Rühle: J. Am. Ceram. Soc. Vol. 79, No. 3 (1996), p.788.

Google Scholar

[8] M.K. Cinibulk, G. Thomas and S.M. Johnson: J. Am. Ceram. Soc. Vol. 75, No. 8 (1992), p. (2037).

Google Scholar

[9] P. Šajgalík, M Hnatko, F. Lofaj, P. Hvizdoš, J. Dusza, P. Warbichler, F. Hofer, R. Riedel, E. Lecomte and M.J. Hoffmann: J. Eur. Ceram. Soc. Vol. 20 (2000), p.453.

DOI: 10.1016/s0955-2219(99)00176-4

Google Scholar

[10] M. Hnatko, D. Galusek and P. Šajgalík: J. Eur. Ceram. Soc. Vol. 24 (2004), p.189.

Google Scholar

[11] H. Park, H.W. Kim and H.E. Kim: J. Am. Ceram. Soc. Vol. 81, No. 8 (1998), p.2130.

Google Scholar

[12] J. Dusza, J. Kovalčík, P. Hvizdoš, P. Šajgalík, M. Hnatko and M. Reece: J. Eur. Ceram. Soc. Vol. 24 (2004), p.3307.

Google Scholar

[13] T. Lube: J. Eur. Ceram. Soc. Vol. 21 (2001), p.211.

Google Scholar

[14] G.R. Anstis, P. Chantikul, B.R. Lawn and D.B. Marshall: J. Am. Ceram. Soc. Vol. 64, No. 9 (1981), p.533.

Google Scholar

[15] Z.L. Hong, H. Yoshida, Y. Ikuhara, T. Sakuma, T. Nishimura and M. Mitomo: J. Eur. Ceram. Soc. Vol. 22 (2002), p.527.

Google Scholar

[16] G.D. Quinn and R.C. Bradt: J. Am. Ceram. Soc. Vol. 90, No. 3 (2007), p.673.

Google Scholar