Sintering, Crystallization, and Dielectric Behavior of Barium Zinc Borosilicate GlassesuEffect of Barium Oxide Substitution for Zinc Oxide
authors Monteiro, RCC; Lopes, AAS; Lima, MMA; Veiga, JP; Silva, RJC; Dias, CJ; Davim, EJR; Fernandes, MHV
nationality International
journal JOURNAL OF THE AMERICAN CERAMIC SOCIETY
keywords PLASMA DISPLAY PANELS; BARRIER RIBS; BAO-ZNO-B2O3-SIO2 GLASS; PHYSICAL-PROPERTIES; PHOTOLUMINESCENCE PROPERTIES; ZNO-SIO2-B2O3 GLASSES; BAO-B2O3-SIO2 GLASSES; BAO CONTENT; FILLERS; COMPOSITES
abstract Barium zinc borosilicate glasses with a molar composition xBaO-(60-x)ZnO-30B2O3-10SiO2, where x ranged from 0 to 60 mol%, were prepared using melt-quenching method. The effect of BaO substitution for ZnO on the sintering, crystallization, and dielectric characteristics has been investigated. The behavior of the studied barium zinc borosilicate glasses was mainly determined by the relative amount of the structural modifier oxides (BaO and ZnO) and the ionic size, and field strength of the modifying cations (Ba2+, Zn2+). Increased amounts of BaO decreased both glass transition temperature and crystallization temperature, while increasing the relative dielectric constant. Sintering occurred before crystallization for glasses where substitution of BaO for ZnO was up to 30 mol%, but for higher substitution levels, crystallization occurred during the sintering process hindering densification.
publisher WILEY-BLACKWELL
issn 0002-7820
year published 2012
volume 95
issue 10
beginning page 3144
ending page 3150
digital object identifier (doi) 10.1111/j.1551-2916.2012.05418.x
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000309451700022
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