Published 2011 | Version v1
Miscellaneous Open

Crystallization and chemical durability of glasses in the system Bi2O3-SiO2

Creators

  • 1. Instituto de Pesquisas Tecnologicas (IPT), Sao Paulo, SP (Brazil)

Description

The crystallization of the Bi2O3-SiO2-TiO2-Al2O3-Na2O-K2O and Bi2O3-SiO2-ZnO-Al2O3-B2O3-Na2O glasses was studied using glass samples prepared by traditional melt-quench method. Differential thermal analysis (DTA) curves suggested that surface crystallization played a major role in the crystallization of the glass samples. X-ray diffraction (XRD) analysis revealed the crystallization of bismuth silicate for both glasses and bismuth silicate and zinc silicate for the glass containing ZnO. Through scanning electron microscopy (MEV) and energy dispersive spectroscopy (EDS), it was possible to observe that the crystals of zinc silicate (Zn2SiO4) were readily attacked by hot 0,1 N sulfuric acid, whereas bismuth silicate crystals were more resistant to acidic attack etching. (author)

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Additional details

Additional titles

Original title (Portuguese)
Cristalizacao e durabilidade quimica de vidros do sistema BI2O3-SIO2

Publishing Information

Imprint Pagination
12 p.
Report number
INIS-BR--16504

Conference

Title
55. Brazilian congress on ceramics
Original Conference Title
55. congresso brasileiro de ceramica
Dates
29 May - 1 Jun 2011
Place
Porto de Galinhas, PE (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
47081571
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
BISMUTH; CRYSTALLIZATION; DIFFERENTIAL THERMAL ANALYSIS; ETCHING; GLASS; HARDNESS; LEAD; SCANNING ELECTRON MICROSCOPY; SULFURIC ACID; X-RAY DIFFRACTION; ZINC SILICATES
Descriptors DEC
COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; ELEMENTS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MECHANICAL PROPERTIES; METALS; MICROSCOPY; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; SCATTERING; SILICATES; SILICON COMPOUNDS; SULFUR COMPOUNDS; SURFACE FINISHING; THERMAL ANALYSIS; ZINC COMPOUNDS