Microstructural Transformations of Al2O3-TiO2 and Al2O3-ZrO2 Powders Induced by High-Energy Ball-Milling

Sandrine Coste; Ghislaine Bertrand; Christian Coddet; Eric Gaffet; Horst Hahn; H. Sieger; Miguel A. Rodríguez; Cathy Meunier; Serge Vives

doi:10.4028/www.scientific.net/AST.45.303

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HomeAdvances in Science and TechnologyAdvances in Science and Technology Vol. 45Microstructural Transformations of Al2O3-TiO2 and...

Microstructural Transformations of Al₂O₃-TiO₂ and Al₂O₃-ZrO₂ Powders Induced by High-Energy Ball-Milling

Abstract:

Superior properties of nanostructured Al2O3 based materials, such as higher hardness and fracture toughness, have been evidenced. In order to optimize their manufacturing, the mechanical activation of the starting powders (Al2O3-TiO2 and Al2O3-ZrO2) was studied. In the present work, Al2O3 powders blended with 13wt% and 44wt% of titania or 20wt% and 80wt% of yttria partially stabilized zirconia have been high-energy ball-milled using a planetary mill, P4 (Fritsch) with steel vials and balls. The effect of the milling time and operating parameters, such as shock energy and friction to total energy ratio, on the powder structural and microstructural evolutions has been determined by SEM, XRD and BET. The transformation of the metastable anatase TiO2 phase into the high pressure TiO2 II phase and rutile phase was evidenced, simultaneously to the decrease of the alumina crystallite size, in the Al2O3-TiO2 system. In the Al2O3-ZrO2 system, the transformation of the monoclinic phase and the decrease of the alumina and tetragonal zirconia crystallite size have been observed.

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Advances in Science and Technology (Volume 45)

Pages:

303-308

DOI:

https://doi.org/10.4028/www.scientific.net/AST.45.303

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Online since:

October 2006

Authors:

Sandrine Coste, Ghislaine Bertrand, Christian Coddet, Eric Gaffet, Horst Hahn, H. Sieger, Miguel A. Rodríguez, Cathy Meunier, Serge Vives

Keywords:

Aluminum (Al), High-Energy Ball Milling (HEM), Mechanical Activation (MA), Titania, Zirconia

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References

[1] B.H. Kear, P.R. Strutt: Nanostruct. Mater. 6 (1995) 227-236.

Google Scholar

[2] E. Gaffet and G. Le Caër, Encyclopedia of Nanoscience and Nanotechnology, H.S. Nalwa, Vol. 5 (2004), p.91.

Google Scholar

[3] S. Bégin-Colin, T. Girot, G. Le Caër and A. Mocellin: J. Solid State Chem. Vol. 149 (2000), p.41.

DOI: 10.1006/jssc.1999.8491

Google Scholar

[4] A. Gajović, K. Furić, N. Tomašić, S. Popović, Ž. Skoko and S. Musić: J. Alloys Compd. Vol. 398 (2005), p.188.

DOI: 10.1016/j.jallcom.2005.02.004

Google Scholar

[5] J.E. Bailey, D. Lewis, Z.M. Librant and L.J. Porter: Trans. J. Brit. Ceram. Soc. Vol. 71 (1972), p.25.

Google Scholar

[6] A.N. Scian, E.F. Aglietti, M.C. Caracoche, P.C. Rivas, A.F. Pasquevich and A.R. López Garcia: J. Am. Ceram. Soc. Vol. 77 [6] (1994), p.1525. 0. 1 1 10 100 1000 3000 Particles size (µm).

Google Scholar

[2] [4] [6] [8] [10] [12] Volume (%) (250/300/12h) (250/300/5h) unmilled (250/300/0. 5h).

Google Scholar