Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge


Article Preview

Al-rich sludge produced from industrial anodising and surface treatment processes had been tested in the fabrication of mullite-based materials, by using unidirectional dry pressing as shaping technique. Mixture with common natural silica and magnesium-containing materials, like ball clay, kaolin and diatomite were prepared in order to achieve interesting final fired refractory and/or electrical insulating materials. Microstructural changes upon sintering and crystalline phase evolution are detailed and their relationship with the electrical behaviour is also studied, by the use of impedance spectroscopy. Finally, different models were used to fit the experimental electrical resistivity values and to estimate the percolation limit of the bi-phase material.



Materials Science Forum (Volumes 514-516)

Edited by:

Paula Maria Vilarinho




M.J. Ribeiro et al., "Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge", Materials Science Forum, Vols. 514-516, pp. 1726-1730, 2006

Online since:

May 2006




[1] D.U. Tulyaganov, S.M.H. Olhero, M.J. Ribeiro, J.M.F. Ferreira and J.A. Labrincha: J. Mat. Synt. Proc. Vol. 10 (2002) p.311.

[2] M.J. Ribeiro, D.U. Tulyaganov, J.M.F. Ferreira and J.A. Labrincha: Ceramics International Vol. 28 (2002) p.319.

[3] M.J. Ribeiro, D.U. Tulyaganov, J.A. Labrincha and J.M.F. Ferreira: J. Mat. Processing Techn. Vol. 148 (2004) p.139.

[4] R. El Ouatib, S. Guillemet, B. Durand, A. Samdi, L. Er Rakho and R. Moussa: J. Eur. Ceram. Soc. Vol. 25 (2005) p.73.

[5] Y.I. Cho, H. Kamiya, Y. Suzuki and M. Horio: J. Eur. Ceram. Soc. Vol. 18 (1997) p.261.

[6] G. Stathis, A. Ekonomakou, C.J. Stournaras and C. Ftikos: J. Eur. Ceram. Soc. Vol. 24 (2004) p.2357.

[7] M.J. Ribeiro, J.C.C. Abrantes, J.M. Ferreira and J. A Labrincha: J Eur. Ceram. Soc. Vol. 24 (2004) p.3841.

[8] L. Dessemond, J. Guindet, A. Hammou and M. Kleitz: Proceedings of the Second International Symposium on Solid Oxide Ful Cells (F. Grosz, P. Zegers, S.C. Singhal and O. Yamamoto, Ed. Office for Official Publications of European Communities 1991), Bruxelles, p.409.

[9] M. Kleitz, C. Pescher and L. Dessemond: Science and Technology of zirconia V (S.P.S. Badwall., M.J. Bannioster, R.H.J. Hannink, Ed. Technomic Publ. Co., Inc. 1993) PA, p.593.

[10] D.S. McLachlan, M. Blaszkiewicz and R.E. Newnham: J. Am. Ceram. Soc. Vol. 73 (1990) p.2187.

[11] D.S. McLachlan: J. Phys. C: Solid State Phys. Vol. 20 (1987) p.865.

[12] J. C. C. Abrantes, and J. R. Frade, Computing tools for quick inspection and interpretation of impedance spectra, OSSEP/ESF Workshop, Ionic and mixed conductors: methods and processes, Aveiro, Portugal, 10-12 April (2003).

DOI: https://doi.org/10.1007/s10008-004-0502-4

[13] C.M.S. Rodrigues Sensores de oxigénio para fornos de fusão de vidro, PhD thesis, University of Aveiro (1999).