Impedance spectroscopy evolution upon sintering of Al-rich anodising sludge-based extruded bodies
authors Ribeiro, MJ; Abrantes, JC; Labrincha, JA
nationality International
journal BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
author keywords alumina waste-based materials; impedance spectroscopy; sintering; microstructural development
keywords CERAMIC BODIES; MULLITE
abstract Alumina based ceramic materials, containing All-rich sludge as the major component, were processed by extrusion. The sludge derived from the wastewater treatment of aluminium anodising industrial process. Long rods were produced using a vacuum screw extruder, by a careful control of all relevant processing parameters. Then, thick discs were obtained by cutting dried selected rods, to be tested as probes for sintering-dependent electrical properties. The sintering process was followed by performing common dilatometric/ thermal analyses but the evolution of electrical conductivity, estimated by impedance spectroscopy (IS), was also used for this purpose. Results show that sintering-dependent morphological evolution up to 1300 degrees C strongly affects the electrical behaviour of samples, and as a consequence IS seems to be a useful technique to follow the firing process.
publisher SOCIEDAD ESPANOLA CERAMICA VIDRIO
issn 0366-3175
year published 2006
volume 45
issue 4
beginning page 300
ending page 303
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000239681500011
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journal analysis (jcr 2019):
journal impact factor 2.517
5 year journal impact factor 1.618
category normalized journal impact factor percentile 73.214
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