The April 2025 issue of the Glass and Ceramics journal has been published

Dear colleagues!

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

We inform you that the 4th issue of the monthly scientific and technical magazine Glass and Ceramics for 2025 has been published.

Contents of the April issue:

— GLASS-CERAMIC FERROELECTRIC COMPOSITE MATERIAL BASED ON LOW-ALKALI ALUMINOBOROSILICATE GLASS AND BaTiO3

By sintering near the softening temperature of the glass used, glass-ceramic composites consisting of low-alkali aluminoborosilicate glass and barium titanate mixed in various proportions have been successfully synthesized. The electrical characteristics of the samples in the microwave range were studied. According to X-ray phase analysis, the synthesized samples are a mixture of barium titanate and an amorphous phase, as well as, under certain heat treatment conditions, glass crystallization products (SiO2 - quartz and tridymite) and its interaction with a ferroelectric filler (Ba2TiSi2O8 - fresnoite). The level of permittivity of the studied glass composite samples, measured at a frequency of 1 GHz, ranged from 9.2 to 25.0 with a dielectric loss tangent of 0.007 ... 0.012.

— BOROSILICATE ENAMEL WITH INCREASED CHEMICAL RESISTANCE FOR STEEL PIPES

The results of a study on the development of a frit of primerless enamel with increased chemical resistance to acids and alkalis, designed to protect steel pipelines, are presented. Zinc oxide was introduced into the frit composition, which contributes to increased resistance due to the higher energy of the chemical bond of the ion with oxygen, compared to alkali metal ions. At the same time, the ZnO content in an amount of up to 10 wt. % allows to reduce the flow temperature of the frit. The experimental frit meets the standard requirements for spreadability (45 mm) and the temperature coefficient of linear expansion (112?10–7 K–1). The introduction of zinc oxide in an amount of 5 wt. % into industrial borosilicate enamel leads to an increase in its chemical resistance to acids by 4 times and to alkalis by 8 times, compared to traditional industrial frit.