Electrochemistry of Sodium Sulfate Doped Glass Melts.

Glass Transition, Crystallization of Glass-Forming Melts, and Entropy

A critical analysis of possible (including some newly proposed) definitions of the vitreous state and the glass transition is performed and an overview of kinetic criteria of vitrification is presented. On the basis of these results, recent controversial discussions on the possible values of the residual entropy of glasses are reviewed. Our conclusion is that the treatment of vitrification as a...

Canali-forming Magmas: Generation of Carbonate-sulfate Melts on Venus

Venus' canali, very long meandering channels, are inferred to be products of carbonate-sulfate magmas, comparable in some ways to carbonatite magmas on Earth. In 1994, [1] inferred that alkali-rich carbonate sulfate magmas were common and abundant just beneath Venus' surface. Current understanding of Venus suggests a cooler geotherm, so that carbonate-sulfate melt can be abundant only at pressu...

Use of Sodium Sulfate Separated from Agricultural Drainage Water in Glass Making

Luminescence Properties of Oxyfluoride Glass and Glass Ceramic Doped with Y3 + Ions

 Oxyfluoride glass ceramics containing CaF2nano-crystals doped with Y3+ ions were prepared by one-step crystallization of SiO2- Al2O3- CaO- CaF2 glasses at different temperatures. X- ray diffraction (XRD) results have revealed that CaF2 was the only precipitated crystalline phase in glass ceramic samples. According to the XRD results, a glass ceramic was selected as the best sample in order to ...

Optical and structural properties of lithium sodium borate glasses doped Dy3+ ions Abstract Absorption and emission spectra of lithium sodium borate glass doped with different concentrations

Absorption and emission spectra of lithium sodium borate glass doped with different concentrations of Dy3+ have been reported. The concentration of Dy3+ was varied from 0.3 to 1.3 mol%. The amorphous nature of the prepared samples was confirmed by the X-ray Diffraction (XRD). Fourier transforms infrared (FTIR) spectra, and other significant physical properties (energy band gap, density, ion con...