Paper Titles
Fabrication and Characterization of Zirconia-Based New Ceramic Composites for Thermal Barrier Coatings
p.597
Design and Characterization of Porosity Gradient for the Laminated Alumina Tubes
p.601
Alumina-Based Nanocomposites Fabricated by a Novel Soaking Method
p.607
Properties and Microstructure of Mullite-Based Iron Nanocomposite
p.611
High-Toughness Tetragonal Zirconia/Alumina Nano-Ceramics
p.615
Microstructures and Mechanical Properties of Fine-Scale Fibrous Alumina / Zirconia Bi-Phase Composite Fabricated by Co-Extrusion Process
p.619
Nanocomposite Formation in the Fe3O4-M (M=Al, Ti) Systems by Mechanical Alloying
p.623
Fabrication of α-Sialon Nano-Ceramics
p.629
Fabrication and Evaluation of β-SiAlON Nanoceramics
p.633

High-Toughness Tetragonal Zirconia/Alumina Nano-Ceramics

Article Preview

Abstract:

The 0.75 to 3 mol% Y2O3-stabilized tetragonal ZrO2 and Al2O3/Y-TZP nano-composite ceramics with 0.2 to 0.7 wt% of alumina were produced by a colloidal technique and low-temperature sintering. The influence of the resulting density, microstructure, the yttria-stabilizer and the alumina content on toughness was determined. The bulk 2.7Y-TZP ceramic with an average grain size of 110 nm reached fracture toughness of 11.2 MPa·m1/2. A nano-grained alumina/zirconia composite with an average grain size of 92 nm was obtained. Y-TZP ceramics with a reduced yttria-stabilizer content were shown to reach fracture toughness of 13.8 MPa·m1/2 (2Y-TZP), and 14.5 MPa·m1/2 (1.5Y-TZP). Y-TZP/alumina composites with 0.35 wt% of Al2O3 were shown to reach fracture toughness of 15.7 MPa·m1/2 (2Y), 15.3 MPa·m1/2 (1.5Y).

You might also be interested in these eBooks
The Science of Engineering Ceramics III View Preview

Info:

Periodical:

Key Engineering Materials (Volumes 317-318)

Pages:

615-618

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.317-318.615

Citation:

Cite this paper

Online since:

August 2006

Authors:

Oleg Vasylkiv, Yoshio Sakka, Valeriy Skorokhod

Keywords:

Hardness, Nanocomposite, Sintering, Tetragonal Zirconia-Alumina Composite, Toughness

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

© 2006 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

References

[1] O. Vasylkiv, Y. Sakka, H. Borodians'ka: J. Am. Ceram. Soc. Vol. 84 (2001), p.2484.

Google Scholar

[2] O. Vasylkiv and Y. Sakka: J. Am. Ceram. Soc. Vol. 84 (2001), p.2489.

Google Scholar

[3] O. Vasylkiv and Y. Sakka: Scripta Mater. Vol. 44 (2001), p.2219.

Google Scholar

[4] O. Vasylkiv, Y. Sakka, and V. V. Skorokhod: J. Am. Ceram. Soc. Vol. 86 (2003), p.299.

Google Scholar

[5] Y. Sakka., T. Suzuki, K. Morita, K. Nakano, K. Hiraga: Scripta Mater. Vol. 44 (2001), p. (2075).

Google Scholar

[6] M. Kihara, T. Ogata, K. Nakamura, K. Kobayashi: J. Ceram. Soc. Jpn. Vol. 96 (1988), p.646.

Google Scholar

[7] M. Fukuhara: J. Am. Ceram. Soc. Vol. 72 (1989), p.236.

Google Scholar

[8] S. Bhaduri, S. B. Bhaduri, and E. Zhou: J. Mater. Res. Vol. 13 (1998), p.156.

Google Scholar

[9] B. A. Cottom and M. J. Mayo: Scripta Materialia Vol. 34 (1996), p.809.

Google Scholar

[10] F. F. Lange: J. Mater. Sci. Vol. 17 (1982), p.247.

Google Scholar

[11] K. Niihara, R. Morena and D. P. H. Hasselman: J. Mater. Sci. Lett. Vol. 1 (1982), p.13.

Google Scholar

[12] A. B. -Leon, Y. Morikawa, M. Kawahara, M. Mayo: Acta Materialia Vol. 50 (2002), p.4555.

Google Scholar