Forming regularity and relation between composition and property of B₂O₃-BaO-ZnO glass

Abstract

B₂O₃-BaO-ZnO glass was prepared by using conventional melt quenching technology. The forming regularity and the relationship between the composition and the property of B₂O₃- BaO - ZnO glass were investigated. The results show that the composition range for forming B₂O₃ - BaO -ZnO glass is very wide, but the content of B₂O₃ has a limit within mole fraction of 25%–75%. When the content of B₂O₃ is over the limit, the melt will be divided into two phases with different compositions and structures, whereas too low content of B₂O₃ will result in the crystallization of the melt during the cooling process. The thermal expansion coefficient, the transition temperature and the resistivity of the glass at room temperature are (5–10) × 10⁻⁶°C⁻¹, 480–620 °C and (1.5–3.0)×10¹⁰ Θ · m, respectively.

Keywords

B₂O₃-BaO-ZnO glass / glass forming range / thermal expansion coefficient / transition temperature / resistivity

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