Господдержка предприятий-производителей строительных материалов
Dear Colleagues!
Viktor Osipov President of the Association "StekloSouz" of Russia is a member of the editorial board of the journal "Glass and Ceramics".
We inform you that the 6th issue of the monthly scientific and technical journal "Glass and Ceramics" for 2023 is out of print.
Contents of the June issue:
- EFFECT OF CeO2 ON THE FORMATION OF PLASMON AU NANOPARTICLES IN GLASSES OF THE ZnO–MgO–Al2O3–SiO2 SYSTEM
Using absorption spectroscopy, differential scanning calorimetry, and X-ray phase analysis, the effect of a small addition of CeO2 on the thermally stimulated formation of plasmonic Au nanoparticles in glass of the ZnO–MgO–Al2O3–SiO2 system containing TiO2 and ZrO2 crystallization catalysts was studied. It is shown that when the glass is heated from temperatures slightly above Tg to temperatures in the region of the exothermic peak, the plasmon resonance band of nanoparticles undergoes a nonlinear shift, but the addition of CeO2 significantly expands the shift region to the long wavelength region of the spectrum. Computer simulation of the experimental absorption spectra has been carried out, the sizes of the formed nanoparticles have been calculated, and the mechanism of the influence of the CeO2 addition on the formation of plasmonic Au nanoparticles has been proposed.
- LASER FORMATION OF LUMINESCENT TRACKS IN THE VOLUME OF BI-DOPED NANOPORED GLASS
The formation of microscale tracks in the volume of porous glass samples using femtosecond laser pulses has been studied, which is of interest for laser recording of active optical waveguides. It has been established that the impregnation of nanoporous glass with a solution of bismuth nitrate leads to the appearance of an orange luminescence band upon excitation at 488 nm, which is enhanced in the formed tracks. It is shown that an increase in the laser pulse energy to 200 nJ makes it possible to increase the phase contrast for tracks recorded in nanoporous glass with bismuth, compared to tracks recorded in nanoporous glass without additives.
- ENVIRONMENTAL ASPECTS OF THE USE OF CUTTED GLASS FOR THE PRODUCTION OF GLASS CONCRETE
The technology of glass concrete based on dispersed container and sheet glasses has been developed. It has been shown that with the joint grinding of Portland cement and cullet, upon reaching a specific surface of 5890–6450 cm2/g and a particle size of 3.4–3.6 μm with a mass content of dispersed glass in the composite of 20–50% with a hyperplasticizer, glass concrete corresponds to classes B30–B40, which meets the requirements of regulatory documents. The microstructure of glass concrete and the features of its dehydration when heated to 1000 °C have been studied. Using X-ray phase analysis, it was found that sodium-calcium hydroaluminosilicates such as gmelenite and thomsonite are formed in glass concrete.