Electrical characterisation of cordierite bodies containing Al-rich anodising sludge


Al-rich sludge produced from industrial anodising and surface treatment processes had been tested in the fabrication of cordierite-based materials, by using unidirectional dry pressing and extrusion as shaping techniques. Mixtures with commercial sand and magnesium-containing materials, like ball clay, and talc were prepared in order to achieve interesting final refractory and/or electrical insulating compositions. Microstructural changes upon sintering and crystalline phase evolution are detailed and their relationship with the electrical behaviour is now studied, by the use of impedance spectroscopy. (c) 2005 Elsevier Ltd. All rights reserved.



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Materials Science


Labrincha, JA; Albuquerque, CM; Ferreira, JM; Ribeiro, MJ

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