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Structural evolution in ceramics technology and processing

Structural evolution in ceramics technology and processing Refractories and Industrial Ceramics Vol. 47, No. 2, 2006 UDC 666.3 STRUCTURAL EVOLUTION IN CERAMICS TECHNOLOGY AND PROCESSING 2 2 A. V. Belyakov and V. S. Bakunov Translated from Novye Ogneupory, No. 2, pp. 55 – 62, February, 2006. Original article submitted September 2, 2005. The next technological process is preparation of the tion (small internal friction, low apparent viscosity) during molding mix, which involves the mixing of powders of vari- molding; however as soon as shaped, the material should im- ous dispersities and compositions, introduction of a sacrifi - prove substantially these properties. cial bond, and granulation. When mixed, the particles tend to We now consider three main molding techniques in order lower their surface energy by combining with each other or of increasing the amount of bond required: semi-dry press- with the bond. This behavior prevents a uniform distribution ing, plastic molding, and casting. of constituents and is undesirable. The granulation of highly In semi-dry pressing, the required amount of bond is dispersed powders requires special conditions to be efficient. minimum, which, however, necessitates a larger amount of This is achieved through self-organization (a principle under- energy for molding. In a powder treated by pressing, locally lying http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Structural evolution in ceramics technology and processing

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References (2)

Publisher
Springer Journals
Copyright
Copyright © 2006 by Springer Science+Business Media, Inc.
Subject
Materials Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Materials
ISSN
1083-4877
eISSN
1573-9139
DOI
10.1007/s11148-006-0067-0
Publisher site
See Article on Publisher Site

Abstract

Refractories and Industrial Ceramics Vol. 47, No. 2, 2006 UDC 666.3 STRUCTURAL EVOLUTION IN CERAMICS TECHNOLOGY AND PROCESSING 2 2 A. V. Belyakov and V. S. Bakunov Translated from Novye Ogneupory, No. 2, pp. 55 – 62, February, 2006. Original article submitted September 2, 2005. The next technological process is preparation of the tion (small internal friction, low apparent viscosity) during molding mix, which involves the mixing of powders of vari- molding; however as soon as shaped, the material should im- ous dispersities and compositions, introduction of a sacrifi - prove substantially these properties. cial bond, and granulation. When mixed, the particles tend to We now consider three main molding techniques in order lower their surface energy by combining with each other or of increasing the amount of bond required: semi-dry press- with the bond. This behavior prevents a uniform distribution ing, plastic molding, and casting. of constituents and is undesirable. The granulation of highly In semi-dry pressing, the required amount of bond is dispersed powders requires special conditions to be efficient. minimum, which, however, necessitates a larger amount of This is achieved through self-organization (a principle under- energy for molding. In a powder treated by pressing, locally lying

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: Aug 26, 2006

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