Инд. авторы:	Kuryaeva R.G.
Заглавие:	Compressibility of magnesium silicate glasses in comparison with those of aluminosilicate glasses
Библ. ссылка:	Kuryaeva R.G. Compressibility of magnesium silicate glasses in comparison with those of aluminosilicate glasses // Solid State Sciences. - 2013. - Vol.24. - P.133-139. - ISSN 1293-2558. - EISSN 1873-3085.
Внешние системы:	DOI: 10.1016/j.solidstatesciences.2013.07.018; SCOPUS: 2-s2.0-84883544000; WoS: 000325671800021;
Реферат:	eng: The refractive index of the Na2MgSi6O14 glass in the pressure range up to 6.0 GPa has been measured using a polarization-interference microscope and an apparatus with diamond anvils. The changes in relative density which characterize the compressibility of the glass have been estimated in the pressure range under investigation from the measured refractive indices within the framework of the theory of photoelasticity. The results have been compared with the data previously obtained for the NaAlSi 3O8 and CaAl2Si6O16 glasses. A comparison of the changes in relative density of the aluminosilicate and magnesium silicate glasses has been demonstrated that the difference in the compressibility is not so much significant as should be expected from the replacement of network-forming ions by modifiers ions. Estimated by different methods the degree of depolymerization of the Na2MgSi 6O14 glass (NBO/T ≅ 0.2) is compared to those for the aluminosilicate glasses. The decrease in the compressibility in the series NaAlSi3O8, CaAl2Si6O16, Na2MgSi6O14 glasses is in agreement with an increase of the degree of depolymerization in the same series. © 2013 Elsevier Masson SAS. All rights reserved.
Ключевые слова:	Degree of depolymerization; Glass structure; High pressure; Magnesium silicates; Polymerization degree; Pressure ranges; Relative density; Aluminosilicates; Compressibility; Magnesium; Microscopes; Polymerization; Refractive index; Silicon; Glass; Polymerization degree; Magnesium silicate glasses; High pressures; Glass structure; Aluminosilicate glass; Glass compressibility;
Издано:	2013
Физ. характеристика:	с.133-139