铅和硼酸盐玻璃从液体到玻璃转变的动力学方面

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of Non-crystalline Solids Pub Date : 2025-06-25 DOI:10.1016/j.jnoncrysol.2025.123684

Alexey A. Mashanov , Michael I. Ojovan , Migmar V. Darmaev

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引用次数: 0

摘要

本文研究了含铅硼二元氧化物玻璃从液态到玻璃态转变过程中粘度的温度依赖性，包括玻璃化转变的动力学判据分析。对于所研究的玻璃，确定了在Tg处波动体积的比例在fg≈0.01 ~ 0.03的小范围内变化，并且对玻璃成分的依赖性较弱。对PbO-SiO2、PbO-GeO2、B2O3-Bi2O3、B2O3-Li2O、B2O3-BaO、B2O3-Na2O体系玻璃化的温度范围和结构弛豫时间进行了计算。利用Williams-Landel-Ferry方程计算了玻璃化转变温度附近的这些参数。对于指定的玻璃，温度区间的值为δTg = 9 ~ 17k。结果表明，PbO-SiO2玻璃在玻璃过渡区δTg随Tg的变化呈线性关系。对于PbO-GeO2和硼酸盐玻璃，δTg和Tg之间观察到近似的线性相关。

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Kinetic aspects of the liquid-to-glass transition for lead and borate glasses

We have examined the temperature dependence of the viscosity of lead and boron containing binary oxide glasses in the context of transition from the liquid to the vitreous state, including analysis of kinetic criterion of glass transition. For the studied glasses, it was established that the proportion of the fluctuation volume at Tg changes within a small range f_g ≈ 0.01 - 0.03 and depends weakly on the composition of the glasses. For glasses of the PbO-SiO₂, PbO-GeO₂, B₂O₃-Bi₂O₃, B₂O₃-Li₂O, B₂O₃-BaO, B₂O₃-Na₂O systems, both the temperature range determining the glass transition and the structural relaxation time were calculated. The calculation of these parameters near the glass transition temperature of the glasses was performed using the Williams-Landel-Ferry equation. For the specified glasses, the value of the temperature interval was δT_g = 9 – 17 K. It was found that for PbO-SiO₂ glass the dependence of δT_g on T_g is linear in the glass transition region. For PbO-GeO₂ and borate glasses an approximate linear correlation between δT_g and T_g is observed.

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来源期刊

Journal of Non-crystalline Solids 工程技术-材料科学：硅酸盐

CiteScore

6.50

自引率

11.40%

发文量

576

审稿时长

35 days

期刊介绍： The Journal of Non-Crystalline Solids publishes review articles, research papers, and Letters to the Editor on amorphous and glassy materials, including inorganic, organic, polymeric, hybrid and metallic systems. Papers on partially glassy materials, such as glass-ceramics and glass-matrix composites, and papers involving the liquid state are also included in so far as the properties of the liquid are relevant for the formation of the solid. In all cases the papers must demonstrate both novelty and importance to the field, by way of significant advances in understanding or application of non-crystalline solids; in the case of Letters, a compelling case must also be made for expedited handling.