Thermodynamic modeling and Raman spectroscopy study of Na2O-TiO2-SiO2 glasses

被引：10
作者：
Osipov, Armenak A. [1 ]
Liska, Marek [2 ,3 ]
Osipova, Leyla M. [1 ]
Chromcikova, Maria [2 ,3 ]
Hruska, Branislav [2 ]
机构：
[1] RAS, Ural Branch, Southern Urals Fed Res Ctr Mineral & Geoecol, Inst Mineral, Miass 456317, Chelyabinsk Reg, Russia
[2] A Dubcek Univ Trencin, FunGlass, Studentska 2, SK-91150 Trencin, Slovakia
[3] FChPT STU, TnUAD, IIC SAS, VILA Joined Glass Ctr, Studentska 2, SK-91150 Trencin, Slovakia
来源：
VIBRATIONAL SPECTROSCOPY | 2020年 / 111卷
关键词：
Glass structure; Thermodynamic modeling; Raman spectra; SRO structures; ALKALI-SILICATE-GLASSES; CRYSTAL-STRUCTURE; MELTS; TEMPERATURE; TI; COORDINATION; SPECTRA;
D O I：
10.1016/j.vibspec.2020.103160
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The glasses with composition xTiO(2)-(100-x)[40Na(2)O-60SiO(2)] (0 <= x <= 30 mol%) were studied using Raman spectroscopy and thermodynamic modeling. According to the thermodynamic modeling results, the chemical structure of studied glasses is defined by seven chemical groups (TiO2, SiO2, Na2O.2SiO(2), Na2O.SiO2, Na2O.3TiO(2), Na2O.TiO2, Na2O.TiO2.SiO2), whereas the short-range order (SRO) structures are TiO5, TiO6, Q4, Q(3) and Q(2) species. Existence of all these SRO structures was confirmed by the analysis of measured Raman spectra. The equilibrium molar amounts of SRO groups calculated in the framework of the Shakhmatkin-Vedishcheva thermodynamic model and those derived from spectroscopic data exhibit a positive correlation.
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页数：7
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