VOL 89, No. 12 (2016)

Possible modes of gas outflow into the molten glass layer through a horizontal tuyere, as well as the structure of the blowing zone formed in this case, are investigated on a physical model of a glass-making furnace with a bubbling layer. Initial data were obtained for the formation of unambiguous conditions in the mathematical model of mixing glass melt in a bath furnace.

A method for the nucleation of a crystal seed is proposed, which consists in the action of a stationary laser beam with an increasing pulse energy, which makes it possible to significantly reduce and stabilize the time of formation of microcrystals. A significant improvement in the homogeneity of crystal structures formed under the action of a focused beam of a femtosecond laser with an elliptical waist cross section in comparison with a conventional Gaussian beam has been demonstrated. It was found by confocal Raman spectroscopy that the obtained crystalline channels consist of LaBGeO5 crystals oriented along the scanning direction by the laser beam

The role of a mineralizing additive in high-carbonate masses during low-temperature firing has been established, which ensures a decrease in the crystallization temperature and an intensification of the formation of new phases of building ceramics based on clay raw materials of various chemical and mineralogical composition.

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A theoretical and experimental study of the influence of the parameters of the structure of ceramic compositions of the abrasive grain? a bunch? pores on the specific energy of their destruction. The experimental technique is described, a graphical interpretation of its results and their analytical processing in the form of mathematical models for calculating the destruction energy of compositions of various structural structures

The results of the development and modeling of large-sized products based on sheet thermoplastic composite materials with increased fire resistance, which are a three-layer sandwich structure, obtained from structural thermoplastics reinforced with discrete glass fibers. It is shown that high physical and mechanical characteristics of glass-filled composites based on aromatic polyesters make it possible to manufacture fire-resistant products for various fields of technology.

Glass-ceramic material was obtained from the "tailings" of concentration of lead-zinc ores. The strength of the control samples was 22.26 MPa in bending and 90.22 MPa in compression. After 100 cycles of testing samples for frost resistance, the characteristics changed to values ??equal to 9.61 MPa in bending and 35.30 MPa in compression.

The electrochemical behavior of electrodes with an active layer based on TiO ₂, IrO ₂, RuO ₂, SnO ₂ has been studied. The values ??of the current-free potentials are determined. The dependences of the rate of the anodic processes of chlorine and oxygen evolution on the composition of the electrode are presented.