Abstract

A method is proposed for calculating the temperature dependence of the microhardness of glass in the temperature range from absolute zero to the glass transition temperature. According to the model underlying the calculation, the glass passes into a plastic state not only under the action of temperature but also under the action of mechanical stresses above the critical value corresponding to microhardness. Therefore, under the simultaneous action of these two factors, the glass passes into a plastic state if the sum of the thermal and mechanical energy of the glass mesh exceeds the critical value. The proposed calculation method is tested on the example of organic glass and two of the most important oxide glasses for practice: fused quartz and industrial alkali-silicate glass (soda-lime-silica glass (SLSG).

中文翻译：

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玻璃显微硬度的温度依赖性

摘要

提出了一种计算玻璃显微硬度在绝对零温度到玻璃化转变温度范围内的温度依赖性的方法。根据计算所依据的模型，玻璃不仅在温度的作用下，而且在高于与显微硬度对应的临界值的机械应力的作用下进入塑性状态。因此，在这两个因素的同时作用下，如果玻璃网的热能和机械能之和超过临界值，玻璃就会转入塑性状态。所提出的计算方法以有机玻璃和实践中两种最重要的氧化物玻璃为例进行了测试：熔融石英和工业碱硅酸盐玻璃（钠钙硅玻璃（SLSG））。