Paper Titles
Use of Sewage Sludge in the Production of Light-Weight Ceramic Bricks
p.1706
Effect of Dolomite Addition on the Densification of Fly Ash Based Ceramics
p.1711
Highly Reactive Alumina Production from Spent Baths
p.1716
Incorporation of Aluminium Residues in Dense Cordierite Formulations
p.1722
Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge
p.1726
Prediction of Solid Waste Incineration Residues Quantity for Valorization in Lightweight Aggregates
p.1731
Leaching Behaviour of a Glass Produced from a MSWI Bottom Ash
p.1736
Regeneration of Adsorbent Carbonaceous Materials with Supercritical Water
p.1742
Evaluation of Physical Processing in the Recycling of Spent Domestic Batteries
p.1748

Electrical Characterization of Mullite Bodies Containing Al-Rich Anodizing Sludge

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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.

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Advanced Materials Forum III View Preview

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

1726-1730

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.1726

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Online since:

May 2006

Authors:

M.J. Ribeiro, João Carlos de Castro Abrantes, Joao A. Labrincha

Keywords:

Impedance Spectroscopy, Microstructural Development, Mullite Waste-Based Materials, Percolation Limit

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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References

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