Journal
GLASS PHYSICS AND CHEMISTRY
Volume 49, Issue 4, Pages 336-339Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1087659623600266
Keywords
glasses; microhardness; calculation of microhardness; selenium; temperature dependence of microhardness; relationship between microhardness and heat capacity
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A model is proposed to calculate the temperature dependence of glass microhardness over the entire temperature range based on its enthalpy and microhardness at the transition temperature. The model is tested on glassy selenium, establishing a relationship between strength and thermodynamic properties of glass.
A model is proposed that makes it possible to calculate the temperature dependence of the microhardness of glass over the entire temperature range from the softening temperature to absolute zero. The calculation uses the temperature dependence of the glass enthalpy and the value of its microhardness at the glass transition temperature. The proposed model is tested on the example of glassy selenium. For this, the temperature dependence of the microhardness of selenium on the softening temperature up to 100 K, which is 50 K below its Debye temperature, is measured. Thus, a relationship is established between the strength and thermodynamic properties of glass.
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