Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 471, Issue 1-2, Pages 272-277Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.03.090
Keywords
Ceramics; Mechanochemical processing; Sintering; X-ray diffraction
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Starting mixtures of ZnO, TiO(2) and MgO (0, 1.25 and 2.5 wt.% MgO) powders were mechanically activated for 15 min in a planetary ball mill. The powders obtained were sintered non-isothermally to temperatures between 800 and 1100 degrees C and then held at those temperatures for 120 min. Analysis of the influence of MgO addition on the synthesis of zinc-titanate ceramics showed that its addition increased slightly the temperature at which the reaction process started, accelerated the reaction and resulted in higher sample densities. These results were correlated with the results of structural characterization using X-ray powder diffraction method and SEM analysis. Also, the results of electric resistivity, capacitance and loss tangent of the sintered samples were obtained. (C) 2008 Elsevier B.V. All rights reserved.
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