Preparation of Al₂TiO₅-Al₂O₃ and Al₂TiO₅-Al₂O₃-TiO₂ Ceramics by High-Energy Ball Milling and Sintering

Abstract:

The present work reports on the preparation of Al₂O₃-TiO₂ ceramics by high-energy ball milling and sintering, varying the molar fraction in 1:1 and 3:1. The powder mixtures were processed in a planetary Fritsch P-5 ball mill using silicon nitride balls (10 mm diameter) and vials (225 mL), rotary speed of 250 rpm and a ball-to-powder weight ratio of 5:1. Samples were collected into the vial after different milling times. The milled powders were uniaxially compacted and sintered at 1300 and 1500°C for 4h. The milled and sintered materials were characterized by X-ray diffraction and electron scanning microscopy (SEM). Results indicated that the intensity of Al₂O₃ and TiO₂ peaks were reduced for longer milling times, suggesting that nanosized particles can be achieved. The densification of Al₂O₃-TiO₂ ceramics was higher than 98% over the relative density in samples sintered at 1500°C for 4h, which presented the formation of Al₂TiO₅.

• Periodical: Materials Science Forum (Volumes 727-728)
• Pages: 1193-1198
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.727-728.1193
• Online since: August 2012
• Authors: Pietro Carelli Reis de Oliveira Caltabiano, Marisa Aparecida de Souza, Rodrigo Fernando Costa Marques, Maria Gabriela Nogueira Campos, Luis Rogério de Oliveira Hein, Alfeu Saraiva Ramos
• Keywords: Al₂O₃-TiO₂, Biomaterial, High-Energy Ball Milling, Sintering

References

[1] T.J. Webster: Advances in Chemical Engineering Vol. 27 (2001), p.125.

[2] I. Mobasherpour, M.S. Hashjin, S.S.R. Toosi and R.D. Kamachali: Ceramics International Vol 35 (2009), p.1569.

DOI: 10.1016/j.ceramint.2008.08.017

[3] H. Qi, Y. Fan, W. Xing and L. Winnubst: J. of the European Ceramic Society Vol 30 (2010), p.1317.

[4] M. Geetha, A.K. Singh, R. Asokamani and A.K. Gogia: Progress in Materials Science Vol 54 (2009), p.397.

[5] S.J. Kalita and V. Somani: Mat. Research Bulletin Vol 45 (2010), p.1803.

[6] W.J. Nascimento, T.G.M. Bonadio, V.F. Freitas, W.R. Weinand, M.L. Baesso and W.M. Lima: Materials Chemistry and Physics Vol 130 (2011), p.84.

DOI: 10.1016/j.matchemphys.2011.05.069

[7] C.B. Reid, J.S. Forrester, H.J. Goodshaw, E.H. Kisi and G.J. Suaning: Ceramics International Vol 34 (2008), p.1551.

DOI: 10.1016/j.ceramint.2007.05.003

[8] D. Choi and P.N. Kumta: Mat. Sci. and Eng. C Vol 27 (2007), p.377.

[9] C. Santos, M.H. Koizumi, J.K.M.F. Daguano, F.A. Santos, C.N. Elias and A.S. Ramos: Materials Science and Engineering A Vol 502 (2009), p.6.

[10] W Kraus and G Nolze: J. Applied Crystallography Vol 29 (1996), p.301.

[11] P. Duran, M. Villegas, F. Capel, P. Recio and C. Moure: J. Eur. Ceram. Soc. Vol 16 (1996), p.945.

[12] H.P. Klug and L.E. Alexander: X-Ray Diffraction Procedures; for Polycrystalline and Amorphous Materials. Edited by John Willey and Sons, New York, (1974), p.618.

[13] H.M. Rietveld: J. Appl. Crystall. Vol 2 (1969), p.65.

[14] A.C. Larson and R.B. Von Dreele: Los Alamos National Laboratory. Los Alamos, EUA. Copyright, 1985-2000: The Regents of the University of California, (2001).

[15] R.M. German: Sintering Theory and Practice. Edited by John Wiley and Sons, New York, (1996), p.550.

[16] Y. Wang and L.C. Suryanarayana: J. Am. Ceram. Soc. Vol 88 (2005), p.780.