Abstract
In the Pb-free low temperature sinterable glass of the (55)BaO-(35)B2O3-(10)SiO2 system, different amounts of Al2O3 were added and the crystallization behavior, sintering behavior and physical characteristics of the glass were examined. It was found that Al2O3 suppressed crystallization of the glasses because it played the role of a network former. The glass transition temperatures, crystallization temperatures, and optimum sintering temperatures increased as the amount of Al2O3 increased. In the case of a specimen with a large amount of Al2O3, which was not easily crystallized, an over-firing phenomenon was observed when the sintering temperature was higher than the optimum sintering temperature. While the over-firing phenomenon was not observed due to the crystallization in the sample with a little amount of Al2O3. The dielectric constant and thermal expansion coefficient of the glasses were also examined and explained in correlation with the crystallization and densification.
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Lim, ES., Kim, BS., Lee, JH. et al. Dielectric, thermal and sintering behavior of BaO-B2O3-SiO2 glasses with the addition of Al2O3 . J Electroceram 17, 359–363 (2006). https://doi.org/10.1007/s10832-006-7111-9
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DOI: https://doi.org/10.1007/s10832-006-7111-9