VOL 79, No. 1 (2006)

The analysis of the capillary-gravitational interaction of isomeric particles is carried out in relation to the processes of segregation arising in the preparation of a glass batch. The critical sizes of particles causing segregation are calculated for simple and complex capillary cells. The influence of the wetting angle of the material on the tendency of the charge to delamination is considered, the effect of mechanical overloads and vibration during the preparation of the glass charge is taken into account. Il. 8, bibliography: 2 titles.

On the example of glasses of the K ₂ O - TiO ₂ - P ₂ O ₅ system near the stoichiometry of potassium titanyl phosphate by methods small-angle scattering of synchrotron radiation, vibrational spectroscopy, and second harmonic generation, it is shown that at the initial stage of phase separation, at which the glass remains X-ray amorphous and transparent, it can have a quadratic optical nonlinearity. The onset of nonlinearity is facilitated by the formation of nanoinhomogeneities in glass, the structure of which is similar to the structural motif of a nonlinear optical crystal. The discovery of correlations between the features of the structure of X-ray amorphous glass and its quadratic optical nonlinearity indicates the expediency of describing the short-range and average orders of glasses of compositions at the boundaries of the regions of glass formation from the standpoint of quasicrystalline models. Il. 6, bibliography: 13 titles.

The level of transmission in the ultraviolet region of sheet glasses with hard and soft low-emission coatings is analyzed. Tab. 1, bibliography: 2 titles.

The experience of a plant for the production of electrovacuum glass with periodic changes in the glass composition is considered. Il. 2, bibliography: 3 titles.

The influence of chalk, slag of the Severstal plant and Kachkanar slimes on the moisture expansion of ceramic facing tiles has been investigated. It has been found that chalk reduces moisture expansion most effectively, then slag and least of all Kachkanar sludge. Tab. 3, bibliography: 4 titles.

The mineralizing effect of additives of the natural fluorine-containing mineral topaz and boric acid on the synthesis of ceramic pigments with diopside and anorthite structures based on natural wollastonite has been investigated. The brightest palette was obtained at 1100 ° C. A clear advantage of topaz over the traditional mineralizer, boric acid, has been established. The obtained ceramic pigments have good chromophore properties, are stable at high firing temperatures, and can be widely used in ceramic production. Tab. 5, ill. 2, bibliography: 3 titles.

Express physical and chemical methods for controlling the technological parameters of glass melting and finished products have been developed and introduced into the laboratory practice of the plant, which make it possible to quickly assess the performance of the glass furnace. Bibliography: 7 titles.

The basic composition of single-layer glass enamel has been developed, which allows obtaining a wide range of colors of coatings for steel products with good surface quality. A number of ionic dyes have been tested, mainly compounds of d- and f-elements. The properties of coatings have been studied: chemical resistance, adhesion strength, gloss and heat resistance. The firing temperature has been determined. The obtained glass enamels can be used in mass production. Tab. 4, bibliography: 3 titles.

It has been established that nickel-plated hollow glass microspheres can be used as a conductive and heat-insulating filler for paints and varnishes to obtain coatings on their basis with low values ??of electrical resistance and good heat-insulating properties. Tab. 2, ill. 1, bibliography: 4 titles.

The composition of the glaze based on the sludge of the regeneration of acidic effluents from the Dyatkovo Crystal Plant and the technology for producing colored glass-crystalline coatings for facade bricks have been developed. The main physical, technical and color characteristics of the developed glazes are given. Tab. 4, bibliography: 3 titles.

Semiluki Refractory Plant produces refractories using concrete technology and develops and improves compositions and technology for manufacturing large-sized products by vibrocasting. The Saratov Institute of Glass carried out operational tests of concrete samples and determination of their physical and mechanical characteristics. Tests of specimens fired at a temperature not exceeding 1000 ° C showed a sufficiently high compressive strength (from 40 to 60 N / mm ²). Tab. 1, ill. 1, bibliography: 4 titles.