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首页> 外文期刊>European Journal of Glass Science and Technology, PartB. Physics and Chemistry of Glasses >Short and intermediate range order in sodium borosilicate glasses: a quantitative thermodynamic approach
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Short and intermediate range order in sodium borosilicate glasses: a quantitative thermodynamic approach

机译：硼硅酸钠玻璃的中短程有序：定量热力学方法

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摘要

It is shown that the short range and intermediate range order in the structure of sodium borosilicate glasses can be quantitatively described using the thermodynamic concept of the chemical structure. This approach enables the distribution of the basic structural units (BO3, BO4-, BO2O-, BOO22-, Q(4), Q(3) and Q(2)), superstructural units (boroxol, pentaborate, triborate, diborate rings and cyclic metaborate anions) and 4-membered borosilicate rings (danburite and reedmergnerite units) to be calculated, without use of adjustable parameters, over the entire glass forming region. The calculations have been made considering structural changes in terms of the minimum Gibbs free energy of the system. A critical analysis has been performed of the fractions of 4-fold co-ordinated boron atoms, BO4-, and the glass transition temperatures, T-g, calculated by Mauro and co-workers on the basis of the topological principles of borosilicate glass chemistry.
机译：结果表明，使用化学结构的热力学概念可以定量描述硼硅酸钠玻璃结构的短程和中程顺序。这种方法可以分配基本结构单元（BO3，BO4-，BO2O-，BOO22-，Q（4），Q（3）和Q（2）），超结构单元（环硼酸，五硼酸盐，三硼酸盐，二硼酸盐环和无需使用可调参数，就可以在整个玻璃成形区域中计算出环状偏硼酸根阴离子）和4元硼硅酸盐环（丹布尔石和褐煤元素）。已经根据系统的最小吉布斯自由能来考虑结构变化进行了计算。进行了严格的分析，由Mauro和同事根据硼硅酸盐玻璃化学的拓扑原理，计算了4倍配位的硼原子BO4-的分数以及玻璃化转变温度T-g。

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