VOL 73, No. 1 (2000)

Based on the analysis of patent information, the main methods of thinning float glass in the process of production are determined. Brief descriptions of the patented methods are given. The problems of shaping thinned float glass and the ways of their solution are considered. The perspective directions of further development of thinned float glass production are presented. Il. nine.

The mechanism of interaction of the metacide, which is a component of the coolant, with quartz glasses during the grinding process has been investigated by spectroscopic methods. It is shown that without grinding, the main type of interaction of metacide with glass is the formation of hydrogen bonds. Under mechanical action, both the polymer and the glass surface change, as a result of which other types of interaction of the metacid with glass appear. Il. 2, bibliography: 8 titles.

The structure of glasses in the local region of the Na ₂ O - Fe ₂ O ₃ - B ₂ O _{3 system has been studied} - SiO ₂. The sequence of formation of oxygen-containing tetrahedral groups in the presence of non-bridging oxygen ions has been established. The formation of groups of the six-coordinated iron cation promotes the crystallization of sodium-borosilicate glass melts upon cooling. Tab. 2, ill. 2, bibliography: 9 titles.

The analysis of the most convenient methods for ceramics technology to control the homogeneity of the distribution of components in mixtures and porosity (or dissimilar components) over the volume of the product material is carried out. A fairly rigorous and simple method for assessing the homogeneity of mixtures (samples) based on a hierarchical approach and statistical assessment of the accuracy of determining the concentration of a key component in mixture samples has been proposed. Bibliography: 14 titles.

The features of the formation of the contact zone in the glaze - ceramics system are considered depending on the temperature-time parameters of heat treatment. The distribution of cations Si ⁴⁺, Ca ²⁺, Zr ⁴⁺, and Al ³⁺ in a glazed muffled coating has been studied. and ceramic base. The course of diffusion processes due to the viscous flow of glazed glass has been established. Tab. 1, ill. 4, bibliography: 7 titles.

The results of a study of the sintering process of two ceramic masses of the same type from three types of illite-containing fusible clays with additions of nepheline syenite and synthetic pseudo-wollastonite are presented. The expediency of using several types of clays of the same type with different mineralogical and granulometric compositions for expanding the sintering interval is shown. Tab. 2, ill. 4, bibliography: 2 titles.

Acid-resistant ceramics based on basaltoid rocks of the Akchinsky intrusion have been developed. The technological aspects of its production are considered, the charge compositions of ceramic masses and the performance properties of products are given.

Compositions have been developed, technological parameters have been determined and the main properties of glass composite heat-resistant coatings of the R _x O - Al ₂ O ₃ - SiO _{2 system have been studied} - TiO ₂ (R - Na ⁺, K ⁺, Mg ²⁺, Ca < sup> 2+, Ва ²⁺) for nichrome alloys. Tab. 2, ill. 4.