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 Bi 2 O 3 and CeO 2 , in which the spectral characteristics of these glasses can be controlled
The effect of the anionic composition of zinc salts upon interaction with tin (IV) chloride on the preparation of zinc orthostannate by the sol-gel method was studied. It was determined that the minimum temperature for the synthesis of zinc orthostannate is 1000 ° C. It was found that when zinc chloride is used, tetraaminezinc chloride is formed, which decomposes during firing.
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. A device for irisation of glassware has been developed. The optimal technological parameters of iridescence of glass products have been determined
On the basis of the author's methodology and structural model of monodisperse systems in combination with the theory of percolation, the parameters of the porous structure of the reaction-bound silicon nitride are estimated depending on the content of the pore-forming agent. When evaluating the thermal conductivity of ceramics, it was found that the analytical and experimental results for silicon nitride without a pore former are in satisfactory agreement with each other, and for samples with a pore former & # 8211; are several times different. A hypothesis has been put forward that a sharp decrease in thermal conductivity during the introduction of a pore-forming agent is caused by the effect of separation of silicon particles by larger particles of a pore-forming agent.
A comparative analysis of the physical and technical properties of existing and proposed perlite thermal insulation products, agricultural components, acoustic fillings, demonstrating a significant improvement in the quality of the latter. In this regard, a selective method for the development of perlite deposits with thin extraction layers is proposed to obtain a homogeneous perlite rock in terms of average density, followed by classification by the size of fractions, which will make it possible to obtain a homogeneous raw material and expanded perlite with a stable set of properties.
Based on the natural zeolite of Nakhchivan, clinoptilolite zeolite was synthesized and the effects of synthesis conditions (temperature, concentration of thermal solution and mineralizer) on the crystallization process were investigated. The zeolite tuff of the Nakhchivan Kukuchay deposit was used as a starting material. It was found that the optimal synthesis conditions favor the production of clinoptilolite with a 100 ° degree of crystallinity. Changing the optimal synthesis conditions contributes to the production of other structural types of zeolites or their associations.
The features of the surface structure of various types of ceramics are determined and their comparative characteristics are presented. The decoration of faience with colored glazes is considered and the composition of lead-free pigment faience glaze is described.
A laboratory technique has been developed for obtaining an ultra-low-background hybrid material based on organic glass - polymethyl methacrylate (PMMA). 157 Gd nuclei are used as an effective absorber of thermal neutrons in the hybrid material. The uniform distribution of gadolinium in the PMMA matrix is ??achieved by its introduction into the hybrid material in the form of a coordination compound - gadolinium acetylacetonate. A uniform distribution of gadolinium was achieved in a 5 cm thick matrix of hybrid material with a mass content of gadolinium from 1.0 to 1.5 & # 37 ;. It is shown that at a temperature of 298 K, the mechanical characteristics of the samples of the hybrid material and nominally pure PMMA coincide, and at a temperature of 77 K, the hybrid material is inferior to pure PMMA within the acceptable requirements.
the results of studies on reducing the melting temperature of strontium aluminosilicate glass by introducing boron and phosphorus oxides into the charge are presented, the main physicochemical processes occurring in the charge during heating, the sequence and temperature ranges of their course are determined
A ponderomotive method for obtaining information on the magnetic susceptibility of iron-containing particles in various media, including glass and ceramic industries, is considered. A corresponding magnetometer with spherical pole pieces is characterized, which makes it possible to create and identify the required (for placement of the studied samples) zone of stability of the induction gradient & mdash; in the vicinity of the extremum of the coordinate dependence of the gradient characteristic of such poles. Examples of identification of coordinates and sizes of such zones, in particular with a deviation of up to 3 & # 37; from the average value of the gradient
