Paper Title:
Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge
  Abstract

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.

  Info
Periodical
Materials Science Forum (Volumes 514-516)
Edited by
Paula Maria Vilarinho
Pages
1726-1730
DOI
10.4028/www.scientific.net/MSF.514-516.1726
Citation
M.J. Ribeiro, J. C. de C. Abrantes, J. A. Labrincha, "Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge", Materials Science Forum, Vols. 514-516, pp. 1726-1730, 2006
Online since
May 2006
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Price
$32.00
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