Periodic glass formation system
- DOI
- 10.5922/gikbfu-2022-4-7
- Pages
- 81-96
Abstract
The article proposes the periodic system of glass formation which is based on the model of glass formation where the possibility of forming glasses based on simple substances and similar alloys is associated with the features of the electronic configurations of atoms, such as stable electronic configurations s0, s2, p0, p3, p6, d0, d5, d10, f 0, f 7 and f 14. It results in primary and secondary periodic dependence of the tendency to glass formation of substances of different nature. Presumably, the glass formation in alloys is promoted by structural-configurational equilibria, which are formed in vitrifying melts at the glass melting temperature between clusters of different degrees of polymerization, which are formed due to the fact that the electronic configurations of atoms in different chemically bonded states are close in terms of energy and correspond to both low — and high-molecular states of molecular groups in melts. The author proposes the parameters of glass formation, which are determined quantitatively, characterizing the ability of the atoms of the chemical elements that make up the melt to form a glassy network. The dependence of these parameters on the charge of the nucleus of the elements proves the primary and secondary periodicity of the tendency to glass formation in the case of sulfide, selenide, telluride, oxide and halide systems. The electronic configuration model turned out to be applicable to diamond-like and metallic systems. On the basis of the proposed theoretical concepts and data on the regions of glass formation of binary and ternary systems, a periodic system of glass formation of substances is proposed, i. e. the ability of simple substances and their alloys to form massive non-equilibrium non-crystalline objects.