VOL 82, No. 12 (2009)

The results of determining the solubility of copper-containing calcium-phosphate glasses depending on the ratio of CaO: P ₂ O ₅, additives Al ₂ O _{3 < / sub>, the content of CuO. Glasses are characterized by a high level of solubility in an aqueous medium during boiling. The registered release of copper ions into an aqueous medium ranges from 60 to 125 ppm, which allows the synthesized glasses to be classified as biocidal. The ratio of modifier cations and glass former, which determines the structure of the phosphorus-oxygen skeleton of the glass, influences the glass solubility to the greatest extent; to a lesser extent, the introduction of Al 2 O 3 and the replacement of calcium oxide with copper oxide... Tab. 2, ill. 5, bibliography: 11 titles.}

A systematic approach from the standpoint of synergetics to the production of high-quality transparent ceramics is considered. At all stages of the production of transparent ceramics, it is necessary to achieve an optimal reduction in the degree of non-equilibrium of the system: when preparing a powder, including its synthesis, introducing densifying additives and heat treatment, it is necessary to optimally reduce the sintering activity. When obtaining the molding mass, molding and removing the binder, as well as during sintering, the formation of aggregates and local seals with strong solid bridges between particles, which lead to the penetration of pores into crystals, should be excluded. Il. 2, bibliography: 24 titles.

Analytical dependences are obtained for the bulk density of monodisperse powder systems, taking into account the properties of particles. Structural and percolation approaches, as well as taking into account the thickness of the phazon or boundary layers, make it possible to significantly simplify the assessment of the properties of filled powder compositions. It is shown that the calculated and experimental data are in good agreement. Il. 4, bibliography: 8 titles.

The effect of agglomeration purification of quartz powders on the quality of quartz glasses obtained from quartz raw materials from veins "Berkutinskaya" and No. 175 of the Kyshtym deposit has been studied. Analysis of optical transmission spectra and structural characteristics of melted glasses shows the efficiency of using agglomeration purification of quartz raw materials to create high-purity concentrates. Il. 2, bibliography: 4 titles.

The results of studies of diamond grinding of glass ceramics are presented. A technological system for diamond flat grinding of parts made of brittle non-metallic materials has been obtained. The factors that characterize the technological system before machining are described. The use of the proposed technological system will make it possible to more effectively simulate the processes of mechanical processing of glass-ceramic products. Il. 2, bibliography: 5 titles.

The main factors associated with the service of refractories, mainly in the melting tanks of glass-making furnaces, are considered. The main technological factors, a description and a diagram of the technological cycle of refractory production at the Domodedovo plant of electrofused products are presented. Il. 1, bibliography: 7 titles.