For Libraries For Publication Open Access Downloads About Us Contact Us
Paper Titles
Effect of Deep Cryogenic Treatment on Microstructure of 5A06 Aluminum Alloy MIG Welded Joint
p.182
Microstructure and Mechanical Properties of Al/Cu Composite Produced by Hydrostatic Extrusion during Isothermal Aging
p.186
Effect of Annealing Process on Mechanical Properties and Texture Changes of AZ31 Mg Alloy Sheets
p.190
Porosity Measurement of Porous Copper by Unidirectional Solidification
p.197
Effects of β-Si3N4 Seeds Addition on Microstructure and Mechanical Properties of Porous Si3N4 Ceramics
p.201
Synthesis of ZnO Nanorods with Tunable Aspect Ratio
p.205
Effect of Size and Stress Field on Electronic Properties of ZnO Nanowires
p.209
Hydrogen Permeability of NiO-Doped Alumina with Nickel Composites Membrane
p.213
Preparation of Porous Alumina Powder Using Sol Containing Trehalose Dihydrate
p.217

Effects of β-Si3N4 Seeds Addition on Microstructure and Mechanical Properties of Porous Si3N4 Ceramics

Article Preview

Abstract:

Porous Si3N4 ceramics were prepared by conventional sintering method with the initial Si3N4 powder added different amounts of β-Si3N4 seeds and 5 wt.% Y2O3. The porosity, density and flexural strength were tested by Archimedes and three-point bending methods, respectively. Microstructure of porous Si3N4 ceramics was studied by scanning electron microscopy. The results showed that the fibrous β-Si3N4 grains developed in the bimodal porous microstructure and the average aspect ratio of 6.42 by adjusting the β-Si3N4 seeds content up to 3 wt.%. Under the porosity of about 42%, the flexural strength of the materials could reached 315.98 MPa.

You might also be interested in these eBooks
Eco-Materials Processing and Design XIII View Preview

Info:

Periodical:

Materials Science Forum (Volume 724)

Pages:

201-204

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.724.201

Citation:

Cite this paper

Online since:

June 2012

Authors:

Fang Li Yu, Yu Bai, Jun Du, Ping Ping Yu, Jian Zhi Wang, Jian Feng Yang

Keywords:

Si3N4, Effect, Mechanical Property, Microstructure, Seeds

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] J.J. Haslam, K.E. Beroth and F.F. Lange: J. Eur. Ceram. Soc. Vol. 20 (2000), p.607.

Google Scholar

[2] S.T. Oh, K.I. Tajima, M. Ando and T. Ohji: J. Am. Ceram. Soc. Vol. 83 (2000), p.1314.

Google Scholar

[3] S.F. Corbin, J. Lee and X. Qiao: J. Am. Ceram. Soc. Vol. 84 (2001), P. 41.

Google Scholar

[4] C.W. Li and F. Reidinger: Acta Mater. Vol. 45 (1997), p.407.

Google Scholar

[5] D.S. Park and C.W. Kim: J. Am. Ceram. Soc. Vol. 82 (1999), p.780.

Google Scholar

[6] X. T . Luo and R.Z. Yuan: Kuei Suan Jen Hsueh Pao. Vol. 27 (1999), p.461.

Google Scholar

[7] H.H. Lu and J.L. Huang: J. Am. Ceram. Soc. Vol. 84 (2001) p.1891.

Google Scholar

[8] H.H. Lu and J.L. Huang: J. Am. Ceram. Soc. Vol. 85 (2002), p.2331.

Google Scholar

[9] B. Wang, J. Yang, R. Guo, J.Q. Gao and J.F. Yang : Mater. Character. Vol. 60 (2009), p.894.

Google Scholar

[10] B. Wang, J. Yang, R. Guo, J.Q. Gao and J.F. Yang: Mater. Sci. Eng. A Vol. 500 (2009), p.79.

Google Scholar

[11] W.L. Dong: Silicon nitride ceramics (China Architecture & Building Press, China, 1987).

Google Scholar

[12] M. J. Hoffmann and G. Petzow: Pure Appl. Chem. Vol. 66 (1994) , p.1807.

Google Scholar

© 2025 Trans Tech Publications Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For open access content, terms of the Creative Commons licensing CC-BY are applied.
Scientific.Net is a registered trademark of Trans Tech Publications Ltd.