VOL 77, No. 4 (2004)

The modern development of glass container production is considered. The expediency of an integrated approach to equipping the technological process with imported and domestic equipment is shown. Directions for improving the design quality of glass-melting furnaces and refractory materials used in their construction are formulated. Tab. 2, bibliography: 5 titles.

Two principles of fabrication of elliptical silica fibers by the CO ₂ laser method are described. The possibility of deformation of quartz blanks during the drawing of elliptical fibers is shown. The process of manufacturing two types of elliptical silica fibers is considered. Il. 2, bibliography: 6 titles.

The features, advantages and technological parameters of obtaining reflective and low-emission glasses by pyrolytic methods during the production of float glass are considered. Tab. 1, bibliography: 2 titles.

A technique is proposed and a specific example of calculating the diffusion coefficient of SiO ₂ using the generalized kinetic dependence of the process of dissolution of silica grains in a boiling glass mass is given. Bibliography: 12 titles.

Within the framework of a model based on taking into account the interaction between the structural elements of two-component glasses, expressions are obtained for the interaction indicators as a function of the macroscopic parameters of glasses. As a result of the analysis of literature data, it was found that in alkali-silicate glasses in the temperature range in which the temperature expansion coefficients are constant, the interaction index does not depend on temperature. Il. 1, bibliography: 3 titles.

The properties of VK 94-1 alumina material press-powders (containing 95% Al ₂ O ₃) obtained by drying in a spray dryer and their effect on the properties of pressed samples have been investigated.... The analysis of the technological process of pressing the capsule ammunition using clays previously dried in spray dryers has been carried out. Recommendations for further improvement of their work are given. Tab. 4, bibliography: 4 titles.

High-density ceramics with the composition LaYO ₃ * YScO ₃ with a total porosity of about 0.5% have been obtained by the method of co-chemical deposition, pressing and sintering. The electrical conductivity of this ceramics was measured and the activation energy of electrical conductivity was determined. The results obtained can be used for the manufacture of new types of thermistors, as well as for the synthesis of electrical insulating materials. Il. 2, bibliography: 6 titles.

Liquation glazes have been developed, which are distinguished by increased gloss and whiteness. Glazes do not contain special mufflers. The most intense liquation phenomena in the synthesized glazes develop in the temperature range 950 - 1000 ° C. The resulting glaze coatings are recommended for use in the production of household ceramics for non-food purposes, as well as for building ceramics. Tab. 1, ill. 3, bibliography: 7 titles.

The effect of firing glass enamel coatings in a high-frequency electric field on their wear resistance has been studied. It is shown that the wear resistance increases by 2.8 - 5.5 times, depending on the type of coating. As a result of ellipsometric studies, it was found that an increase in the wear resistance of glass enamel coatings when formed under the influence of an HF field is antibatically changing the refractive index of the glass matrix. Tab. 2, ill. 2, bibliography: 7 titles.

In the mode of self-propagating high-temperature synthesis using solid in-reaction oxidants, unsubstituted and substituted by alkaline earth metals, cerium chromites are synthesized. The characteristic temperatures and features of the processes of interaction of components in all studied systems have been determined. The structural and physicochemical, including spectroscopic, characteristics of the synthesis products were studied depending on the substituting alkaline earth metal and the degree of substitution. Tab. 1, ill. 6, bibliography: 7 titles.