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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of Y2O3 on rapid sintering of commercial mullite

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Author(s):
P. M. Souto [1] ; R. R. Menezes [2] ; R. H. G. A. Kiminami [3]
Total Authors: 3
Affiliation:
[1] Universidade Federal de S. Carlos. Departamento de Engenharia de Materiais
[2] Universidade Federal da Paraíba. Departamento de Engenharia de Materiais
[3] Universidade Federal de S. Carlos. Departamento de Engenharia de Materiais
Total Affiliations: 3
Document type: Journal article
Source: Cerâmica; v. 57, n. 344, p. 438-443, 2011-12-00.
Abstract

Mullite has become a strong candidate material for advanced structural and functional ceramics. Much interest has recently focused on sintering aids for mullite. The aim of this work was to evaluate Y2O3 influence on rapid sintering of commercial mullite. Mullite powder was doped with Y2O3, pressed under a cold isostatic pressure and fast sintered at 1600 ºC. Sintered mullite was characterized by density determination, X ray diffraction and electronic microscopy. Rapid sintering produces low density mullite bodies, however, Y2O3 addition significantly increase the densification of fast fired doped bodies. Rise of Y2O3 content do not alter the grain size distribution of rapid sintered mullite. High heating rates produce microstructures with narrower grain size distributions. (AU)