Инд. авторы:	Kuryaeva R.G.
Заглавие:	Correlation of the compressibility of calcium aluminosilicate glasses with their degree of depolymerization
Библ. ссылка:	Kuryaeva R.G. Correlation of the compressibility of calcium aluminosilicate glasses with their degree of depolymerization // European Journal of Glass Science and Techology. Part B: Physics and Chemistry of Glasses. - 2017. - Vol.58. - Iss. 6. - P.256-263. - ISSN 1753-3562.
Внешние системы:	DOI: 10.13036/17533562.58.6.008; РИНЦ: 31047329; WoS: 000415784300005;
Реферат:	eng: The refractive index and the relative changes in the density (compressibility) for Ca3Al2Si6O18 glass, with the ratio (CaO/([CaO]+(Al2O3])=0.75, in the pressure range up to 6.0 GPa were obtained using a polarization interference microscope, an apparatus with diamond anvils and the theory of photoelasticity. The results were compared with the previous data for glasses with the ratio (CaO]/([CaO]+[Al2O3])=0.5 and [CaO]/([CaO]+[Al2O3])=0.47. The experimentally obtained compressibility (d-d(0))/d of Ca3Al2Si6O18 glass is higher than one would expect from the glass with a large excess of CaO relative to Al2O3 (CaO/Al2O3=3). This phenomenon was discussed in the light of the quantitative mismatch of cation modifiers and voids in the glass network and the possible heterogeneity of the glass due to the formation of low polymerized areas rich in calcium, and highly polymerized areas rich in aluminium- and silicon-containing structural units.
Ключевые слова:	10 GPA; AL-27 NMR; REFRACTIVE-INDEX; ALUMINUM COORDINATION; SILICATE-GLASSES; HIGH-PRESSURE; MQ-MAS NMR; NON-BRIDGING OXYGEN; NUCLEAR-MAGNETIC-RESONANCE; MELTS;
Издано:	2017
Физ. характеристика:	с.256-263