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Particulate Science and Technology
An International Journal
Volume 23, 2005 - Issue 3
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Original Articles

Chemical Resistance of Silicate Glass-Ceramics

Mônica Jung de Andrade Laboratory of Ceramic Materials, School of Engineering, Federal University of Rio Grande do Sul, Porto Alegre, BrazilCorrespondence[email protected]
,
Cibele Melo Halmenschlager Laboratory of Ceramic Materials, School of Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
,
Márcio Dias Lima Laboratory of Ceramic Materials, School of Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
&
Carlos Pérez Bergmann Laboratory of Ceramic Materials, School of Engineering, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
Pages 309-322 | Published online: 24 Feb 2007
 
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ABSTRACT

This work is concerned about the chemical characterization of monolithic diopside-based glass ceramics (GCs). Variations from this composition were carried out through the addition of P2O5 to increase crystal density and Al2O3 to optimize the chemical properties of the GCs.

The addition of MgO was sufficient for the crystallization of diopside, but additions of P2O5 made the formation of this crystalline phase difficult. The highest volume of diopside crystals was about 76% for the formulation with 5% weight of alumina.

As expected, chemical resistance is directly influenced by the composition of the glass ceramic, but not so much by the fraction of crystals volume.

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