Alumina developed by pre-gelling starch consolidation (PSC)
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Data
2009-03-01
Autores
Minatti, J. L. [UNESP]
Santana, J. G. A. [UNESP]
Fernandes, R. S. [UNESP]
Campos, E. [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
In this paper, pre-gelling starch was used to consolidate alumina-dense ceramic suspensions. The colloidal processing of the ceramic was prepared with alumina and commercial potato starch, and slips were prepared with 55 vol% of solids and 0.5 wt.% of starch. This small amount of starch was possible because of a previous pre-gelling starch treatment, resulting in more homogeneous suspensions and particles smaller than starch granules. Additionally, Sucrose was also used as a dispersion aid. After sintering, the samples were analysed according to their mechanical properties. These processes produced ceramics with a 93% relative density, 325 MPa flexural strength, and a Weibull module whose value wits m = 10, maintaining the capacity of this process to produce complex geometric shaped ceramics. (C) 2008 Elsevier Ltd. All rights reserved.
Descrição
Palavras-chave
Pre-gelling starch consolidation, Al(2)O(3), Dense ceramics
Como citar
Journal of The European Ceramic Society. Oxford: Elsevier B.V., v. 29, n. 4, p. 661-668, 2009.