VOL 80, No. 10 (2007)

The possibility of using slip technology in the production of highly porous cellular materials from aluminoborosilicate glass is shown. The factors influencing the rheology and stability of the slip system, as well as the structural and strength characteristics of the finished material are identified. The obtained materials can be used as substrates in chromatography, in the process of filtration for the purification of liquids and gases, etc. Il. 3, bibliography: 6 titles.

The valence state of cerium and titanium ions in aluminosilicate barium-strontium glasses with different ratios of cerium and titanium oxides is investigated, and an analysis of the possible composition of the formed cerium-titanium complexes in silicate glasses is carried out. It was found that during the synthesis of glasses, an active isolated interaction occurs between cerium and titanium oxides with the appearance of complex coloring centers. It is assumed that, predominantly during the interaction of cerium and titanium in glass-forming melts, coloring centers are formed between tetravalent cerium and tetravalent titanium. Tab. 1, ill. 3, bibliography: 6 titles.

The effect of ultrasound on the deformation properties of thermoplastic slips has been studied. It is shown that, upon sonication, the change in the plastic strength of casting systems beryllium oxide - thermoplastic bond in the technological temperature range (40 - 55 ° C) is due to the effects of cavitation and dissipative heat release and can be characterized using the equation of the thermal activation process. Il. 4, bibliography: 8 titles.

The possibility of using local raw materials of Uzbekistan for obtaining acid-resistant materials has been determined. Compositions of masses based on porcelain stones from the Boinaksay deposit and pyroxene waste from the Koitash ore field have been developed. It is shown that, using non-traditional mineral raw materials, the mineral composition of which is close to the compositions of standard fine-ceramic masses, it is possible to obtain ceramic materials with good thermomechanical and chemical properties. Tab. 2, ill. 1, bibliography: 8 titles.

The possibility of using a small-sized device VIMS-1 for measuring the electrophysical properties of molding abrasive masses from micropowders in the development of formulations of abrasive tools and for quality control of masses in production conditions is considered. It is shown that the introduction of control over the electrophysical properties of molding masses is a real opportunity to obtain molding masses of stable quality. Tab. 2, ill. 2, bibliography: 5 titles.

The possibility of using a granular form of a biocomposite material based on calcium-phosphate glass-ceramics BCS for the treatment of cystic formations of the jaw is shown. Bibliography: 5 titles.

Ceramic pigments with wollastonite and diopside structures were obtained using nepheline sludge with magnesium and silicon oxides. Pigments are resistant to high temperatures, the action of melted fluxes and glazes. They can be recommended in addition to spectral color pigments, as well as for volumetric coloring of ceramics and glazes. In addition to reducing the cost of pigments, the tasks of using waste production waste are being solved, as well as expanding the raw material base for the synthesis of ceramic pigments. Tab. 3, ill. 1, bibliography: 4 titles.

The possibility of using copper-nickel ore dressing wastes as a component of ceramic masses for the production of ceramic tiles has been investigated. The optimal content of waste in ceramic masses and firing conditions have been determined. The physical and mechanical characteristics of the materials obtained have been studied. It has been established that the wastes of the concentration of copper-nickel ores can be used in the compositions of ceramic masses to obtain facing tiles with satisfactory properties: water absorption - 12.7 - 13.3%, bending strength - 10.0 - 12.9 MPa, frost resistance - more than 25 cycles. Tab. 3, bibliography: 3 titles.

Various chemical compositions of glasses and individual features of their interaction with zirconium-containing refractories are considered. When using such refractories for laying glass-melting furnaces, it is necessary to take into account the chemical compositions of the glasses, the melting of which is planned to be carried out in these furnaces. Tab. 5, ill. 5, bibliography: 41 titles.

Technological study of basic and ultrabasic rocks of Karelia as mineral wool raw materials has been carried out. It has been established that ultrabasic rocks with the ratio CaO: MgO & # 8805; 0.5. Areas of these types of rocks, promising for development, have been identified. Tab. 2, bibliography: 7 titles.