The Glass and Ceramics magazine for October 2024 has been published

Dear colleagues!

Viktor Osipov, President of the Association "StekloSouz" Russia, is a member of the editorial board of the Glass and Ceramics journal.

We inform you that the 10th issue of the monthly scientific and technical journal Glass and Ceramics for 2024 has been published.

Contents of the October issue:

- ANALYTICAL ASSESSMENT OF THERMAL CONDUCTIVITY COEFFICIENT OF GLASS

A method for analytical calculation of the thermal conductivity coefficient of glass is proposed, which allows, by taking into account the physical essence of the process of radiation-conductive heat transfer in translucent media, to increase the reliability of calculations for different thicknesses of products taking into account their temperature and to simplify the analysis of temperature conditions during glass melting and operation of products made of it.

- THERMALLY STIMULATED FORMATION OF SILVER NANOAGGREGATES AND THEIR INFLUENCE ON PHOTOLUMINESCENCE OF Nd3+ IONS IN BARIUM PHOSPHATE GLASS

Phosphate glasses with a high concentration of Nd3+ ions are key components for the development of efficient near-infrared (IR) laser systems. Sensitization of Nd3+ ion luminescence in BaO–P2O5 glass using Ag nanoaggregates is considered. The study showed that thermally stimulated formation of Agmn+ molecular clusters allows for a 15-fold increase in the photoluminescence intensity of Nd3+ ions, while the formation of plasmonic nanoparticles (NPs) does not allow for such an enhancement. These results open up new prospects for controlling the properties of phosphate glasses and increasing the efficiency of laser systems.

- GLASSY-LIKE CARBON FROM SUPERCRITICAL FLUID IN THE C–O–H SYSTEM AT 800°C AND 500…1000 ATM

The article presents the results of experimental modeling of obtaining glassy-like carbon from high-pressure supercritical fluid (SCF) in the C–O–H system at 800°C and 500…1000 atm. A comprehensive characteristic of the carbon material is given using the data of CHNS-O analysis, scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), transmission electron microscopy (TEM), X-ray and electron diffraction, infrared and multiwave Raman spectroscopy. Based on a set of features and comparison results with industrial glassy carbon, the synthesized carbon material is classified as a glassy substance. The results of the experimental work indicate possible different mechanisms of production and, as a consequence, the polygenicity of the glass-like state of carbon. The obtained material, due to a fundamentally different method of production (by means of polycondensation), can potentially have special surface and volumetric properties.