The magazine "Glass and Ceramics" for April 2021 was out of print

The 4th issue of the monthly scientific and technical journal "Glass and Ceramics" for 2021 has been published.

Contents of the April issue:

- Synthesis and properties of neodymium-activated chlorofluorosilicate lead glasses

The glass transition region in the PbCl2 – PbF2 – PbO – SiO2 system has been investigated and glasses, including those doped with neodymium, have been obtained. The mechanical, optical and spectral-luminescent properties of glasses have been investigated. It is shown that replacing fluorine with chlorine shifts the maxima of the luminescence and absorption lines to longer wavelengths.

- Physicomechanical and electrophysical properties of porous glass composite with silicon carbide additives

The influence of silicon carbide (10 - 40% by weight) on the physicomechanical and electrophysical characteristics of composites is considered. The effect of the additive on the radio absorption capacity of the material is assessed by measuring the coefficient of absorption, transmission and reflection of electromagnetic radiation, as well as the dielectric constant of the material. It was found that the introduction of 30% by weight of silicon carbide into the composition increases the compressive strength to 2.4 MPa due to the reinforcing role of the needle crystals of silicon carbide. Additional dielectric losses and the average pore size of the composite with the introduction of 30% silicon carbide provide the absorption coefficient of electromagnetic radiation in the frequency range 120-250 GHz from 95 to 98%.

- Synthesis and spectral properties of glasses in the system bismuth oxide - germanium oxide - cerium oxide

Bismuth-germanate glasses doped with cerium oxide have been synthesized. The effect of adding cerium oxide on the spectral properties of bismuth-germanate glasses has been studied. The concentration range of Bi2O3 and CeO2 was found, in which the spectral characteristics of these glasses can be controlled.

- Energy-saving technology of irisation of glassware

An energy-saving technology for irisation of glass products using a high-temperature plasma torch has been developed. The effect of the effluent plasma-forming gas flow on the intensity of glass heating is investigated. An installation for irisation of glassware has been developed. The optimal technological parameters of iridescence of glassware have been determined.

Source: http://www.glassnews.info/