VOL 85, No. 11 (2012)

Sodium sulfate is a widely used clarifier in the technology of large-capacity glass production. The progress of the glass-making process and the quality of the glass largely depend on the quality and characteristics of the interaction of sulfate with a reducing agent, since under the influence of sulfate, redox conditions for glass-making and displacement of the Fe ²⁺ & harr; Fe ³⁺. The reactions and stages of the action of sulfate in the charge and glass melt are considered.

Information on phase formation and glass formation in bismuth borate systems as a basis for obtaining lead-free fusible glasses with a wide range of changes in physical and optical characteristics is generalized. Data on the composition and structure of phases in the Bi ₂ O ₃ - B ₂ O ₃ and BaO - Bi systems are presented. ₂ O ₃ - B ₂ O ₃. Data on glass formation and properties of glasses in the BaO - Bi ₂ O ₃ - B ₂ O ₃ system are given, in including the data obtained by the authors of the article.

In system Y ₂ O ₃ - Al ₂ O ₃ - B ₂ O ₃ glasses and products of solid-phase synthesis in the form of single-phase powders with a huntite structure, activated with samarium, were obtained. It is shown that the studied glasses crystallize with the release of predominantly aluminum borate Al ₄ B ₂ O ₉ and a solid solution (Y, Sm) Al < sub> 3 (BO ₃) ₄ on the sample surface. Upon transition of crystalline powders (Sm _x Y _1-x) Al ₃ (BO ₃) ₄ to the amorphous state, the leveling of the Stark structure and broadening of the Sm ³⁺ luminescence bands are observed, however, the luminescence branching coefficients change insignificantly. It was found that a decrease in the synthesis temperature of such glasses from 1450 to 1250 ° C leads to an increase in the fraction of VO ₄ and the quantum yield of luminescence at a low concentration of the activator.

The efficiency of using ultradispersed activated mixtures obtained by wet grinding in a planetary mill was established for the synthesis of low-alkaline aluminoborosilicate glasses (of the Pyrex type). The positive effect is achieved primarily due to the intensification of the glass formation stage - the dissolution of free silica. The cooking temperature can be reduced by 100 - 150 ° C.

An analysis of the stability of the production process for the production of automotive glass was carried out using the traditional method of product quality control and axiomatic analysis. It is shown that the traditional control method can lead to distortion of the analysis results. The axiomatic analysis of product quality control examines the process based on individual measurements to ensure reliable results.

The process of manufacturing ceramic filters for a gas analyzer for sampling furnace gases with temperatures up to 950 ° C is described. The proposed technology makes it possible to form a through porous structure with a sequentially changing pore size along the thickness of the filter wall and thereby provide an increased resource of its operation.

The possibility of using aqueous epoxy emulsions as a binder for obtaining paints intended for decorating glass products is shown. The physicochemical properties of epoxy coatings have been studied.

The phase composition, structure, and properties of ZrO ₂ - GeO ₂ thin films obtained by the sol-gel method from film-forming solutions based on zirconium oxochloride ZrOCl _{2 & middot; 8H 2 O, germanium tetrachloride GeCl 4 and ethyl alcohol. The physicochemical properties of the obtained films were determined depending on the composition and the composition-property diagrams were constructed.}