Sodium borosilicate glasses containing various concentrations of rhenium or technetium were fabricated, and their vibrational spectra studied using a Raman microscope. Spectra were interpreted with reference to new high resolution measurements of alkali pertechnetates and perrhenates NaReO4, KReO4, NaTcO4, and KTcO4. At low concentrations of ReO4 or TcO4 , glass spectra show weak peaks superimp...

Molecular dynamics simulations of a 5 nm-thick layer of the ionic liquid 1-(2-hydroxyethyl)-3-methylimidazolium tetrafluoroborate, [(OH)C2C1im][BF4], over silica, alumina and boro-silicate glass substrates have been performed. The structure of the ionic liquid at the solid-liquid interface has been interpreted taking into account the corresponding normal density profiles, lateral interfacial st...

Interfacial reaction between quartz and potassium silicate glass was studied at both 900 °C 1000 °C. The results showed that no phase transformation observed for the pure or Instead, particles in K2O-SiO2 glass, from to cristobalite occurred quartz/glass interface first, then crystals transformed into tridymite. tridymite formed became site of heterogeneous nucleation, which induces plenty prec...

The thermodynamics and kinetics of the bulk metallic glass forming Mg65Cu25Y10 liquid were investigated using differential scanning calorimetry and three-point beam bending. The experiments lead to the determination of the thermodynamic functions as well as the viscosity of the supercooled liquid. The viscosity shows a temperature dependence, which is consistent with that of a strong glass simi...

The phenomena of white deposits on glass which is in direct contact with or a short distance from an historic, mainly textile, object has been described in literature since the 1970s. The introduction of this article is a short summary of the history of the linen bands of the Liber Linteus. A literature overview throws light on research done in the field of deposits on glass, concerning the obs...

Photo-thermo-refractive (PTR) glass is a photosensitive multicomponent silicate glass containing photosensitive agents such as cerium and silver. Photoinduced crystalline phase precipitation results in refractive index variations in exposed areas of PTR glass, which has been successfully used for phase hologram recording. Photosensitivity being the result of the partial absorption of the exposi...

The X-ray absorption fine structure (XAFS) technique was used to analyze the structural geometry of Ag atoms introduced into soda-lime silicate glass and soda aluminosilicate glass by ion-exchange methods. The results show that Ag ions in aluminosilicate glass are coordinated by about two oxygens and the nearest-neighbor Ag-O distance increases when the Ag-for-Na ion-exchange ratio is larger th...