Predicting processing-sintering-related properties of mullite-alumina ceramic bodies based on Al-rich anodising sludge by impedance spectroscopy
authors Ribeiro, MJ; Abrantes, JCC; Ferreira, JM; Labrincha, JA
nationality International
journal JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
author keywords Al2O3; mullite; waste materials; electrical properties; microstructural development; impedance spectroscopy
abstract Al-rich sludge produced from industrial anodising and surface treatment processes has been tested in the fabrication of mullite/alumma-based refractory/electrical insulating materials, by dry pressing and extrusion. Different compositions were prepared by using sub-products or common natural silica-containing materials, like ball clay, kaolin and/or diatomite. Ultimate properties are dependent on the shaping method and sintering schedule, since both steps strongly affect the microstructural evolution and crystalline phase formation, which in turn determine the performance of the sintered bodies. The response of sintered bodies to impedance spectroscopy was studied and revealed interesting micro structure-electrical relationships, enabling the use of this technique to predict the processing-sintering-related properties. (C) 2004 Elsevier Ltd. All rights reserved.
publisher ELSEVIER SCI LTD
issn 0955-2219
year published 2004
volume 24
issue 15-16
beginning page 3841
ending page 3848
digital object identifier (doi) 10.1016/j.jeurceramsoc.2003.12.026
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000224259400020
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journal impact factor 3.794
5 year journal impact factor 3.536
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