Mechanical Properties of Alumina Based Nanocomposites

Abstract:

To study the microstructure and mechanical properties of alumina nanocomposites, Al2O3/2.5 vol.% Ni and Al2O3/10 vol.% ZrO₂ nanocomposites were consolidated by pulsed electric current sintering (PECS). Fracture toughness was found to increase by 13 % and 16 % respectively compared to reference alumina. Hardness increased slightly in Al2O3/Ni because of a fraction of nickel particles under the critical size (2 following the rule of mixtures. By investigating the results, causes of improved mechanical properties were critically evaluated.

• Periodical: Key Engineering Materials (Volume 527)
• Pages: 101-106
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.527.101
• Online since: November 2012
• Authors: Erkka Kannisto, M. Erkin Cura, Erkki Levänen, Simo Pekka Hannula
• Keywords: Al₂O₃, Alumina, Fracture Toughness, Grain Size, Hardness, Nanocomposite, Nickel, Pulsed Electric Current Sintering, Slip Casting, Zirconia, Zro₂

References

[1] C. Pecharromán, F. Esteban-Betegon, J. F. Bartolomé, Gunther Richter and J. S. Moya, Theoretical model of hardening in Zirconia-Nickel Nanoparticle composites, Nano Let. 4 (2004) 747-751.

DOI: 10.1021/nl0499286

[2] J.S. Moya, T. Rodriques-Suarez, S. Lopez-Esteban, C. Pecharromán, R. Torrecillas, L.A. Días and M. Nygren, Diamond-like hardening of alumina/Ni nanocomposites, Adv. Eng. Mater. 9 (2007) 898-901.

DOI: 10.1002/adem.200700172

[3] T. Rodrigues-Suarez, J.F. Bartolomé, A. Smirnov, S. Lopez-Esteban, R. Torrecillas, J.S. Moya, Sliding wear behaviour of alumina/nickel nanocomposites processed by a conventional sintering route, J. Eur. Ceram. Soc. 31 (2011) 1389-1395.

DOI: 10.1016/j.jeurceramsoc.2011.02.011

[4] A. Smirnov, J.F. Bartolomé, J.S. Moya, F. Kern, R. Gadow, Dry reciprocating sliding wear behavior of alumina-silicon carbide nanocomposite fabricated by ceramic injection moulding, J. Eur. Ceram. Soc. 31 (2011) 469-474.

DOI: 10.1016/j.jeurceramsoc.2010.11.003

[5] H. Awaji, Y. Nishimura, S-M. Choi, Y. Takahashi, T. Goto and S. Hashimoto, Toughening mechanism and frontal process zone size of ceramics, J. Ceram. Soc. Jap. 117 (2009) 623-629.

DOI: 10.2109/jcersj2.117.623

[6] M. Sternitzke, Structural ceramic nanocomposites, J. Eur. Ceram. Soc. 17 (1997) 1061-1082.

[7] S-M. Choi, H. Awaji, Nanocomposites – A new material design concept, Sci. Tech. Adv. Mater. 6 (2005) 2-10.

[8] J.S. Moya, S. Lopez-Esteban, C. Pecharromán, The challenge of ceramic/metal micro and nanocomposites, Prog. Mater. Sci. 52 (2007) 1017-1090.

DOI: 10.1016/j.pmatsci.2006.09.003

[9] M. Lieberthal, W.D. Kaplan, Processing and properties of Al2O3 nanocomposites reinforced with sub-micron Ni and NiAl2O4, Mater. Sci. Eng. A302 (2001) 83-91.

DOI: 10.1016/s0921-5093(00)01358-7

[10] K. Niihara; R. Morena; D.P.H. Hasselman In: R.C. Bradt; A.G. Evans; D.P.H. Hasselman; F. F. Lange (eds.), Fracture mechanics of ceramics, New York, Plenum: v. 5 (1983) p.97.

DOI: 10.1007/978-1-4613-3488-0_7

[11] O. Aharon, S. Bar-Ziv, D. Gorni, T. Cohen-Hyams, W.D. Kaplan, Residual stresses and magnetic properties of alumina-nickel nanocomposites, Scripta Materialia 50 (2004) 1209-1213.

DOI: 10.1016/j.scriptamat.2004.02.006

[12] J.F. Bartolomé, G. Bruno, A.H. DeAza, Neutron diffraction residual stress analysis of zirconia toughened alumina (ZTA) composites, J. Eur. Ceram. Soc. 28 (2008) 1809-1814.

DOI: 10.1016/j.jeurceramsoc.2007.12.037

[13] S.Novak, M. Kalin, P. Lukas, G. Anne, J. Vleugels, O. Van Der Biest, The effect of residual stresses in functionally graded alumina-ZTA composites on their wear and friction behavior, J. Eur. Ceram. Soc. 27 (2007) 151-156.

DOI: 10.1016/j.jeurceramsoc.2006.01.021