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Hits: 69172
The conditions have been studied and the mechanism of the movement of the molten glass in wide glass-melting furnaces of sheet glass with a different character of the cartograms of the melting zone: symmetric and asymmetric arrangement of the batch heaps on the surface of the molten glass. Tab. 2, bibliography: 5 titles.
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Hits: 69162
The results of studies of the effect of grain size composition, specific surface area of ??the introduced metals, charge preparation modes, as well as temperature-time conditions of synthesis, the nature of the furnace gas environment, the range of the content of metal additives and their ratio on the color tone and damping properties of the produced glass melt are presented. Tab. 2, ill. 4, bibliography: 15 titles.
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Hits: 69128
A possible mechanism of the influence of nonequilibrium defects (dislocations) on the crystallization of glasses is shown. The influence of pre-crystallization and crystallization processes on the activity of glass and glass-crystalline phase in the synthesis of composite materials under hydrothermal conditions has been established. Il. 4, bibliography: 25 titles.
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Hits: 69111
1 The features of the production of glass-crystalline materials of the CaO - Al
2 O
3 - SiO
2 system by the methods of continuous rolling and pressing are considered. The results of studies on the influence of various factors on the amount of vertical deformation arising during heat treatment of such materials are presented. It is shown that the different nature of the crystallization processes during heat treatment can cause different deformation stability. The optimal mode of heat treatment of glass-crystalline material obtained by continuous rolling is proposed. Il. 3, bibliography. : 5 names
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Hits: 69890
On the basis of the polariscope-polarimeter, a device has been developed for monitoring residual stresses in building glass blocks, which makes it possible to automate the process of measuring residual stresses, as well as to eliminate the negative effect of the light-scattering coating of the surfaces of a building glass block on the interference pattern of the distribution of residual stresses when assessing the stress state of glass products by the polarization-optical method. Il. 3, bibliography: 5 titles.
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Hits: 69874
The relationship between the conditions for the synthesis of sol-gel powders, their crystallization ability and luminescent properties of crystal phosphors of the composition CaMgSi
2 O
6 : Ti
4+ has been established. A comparison of the properties of materials obtained by one- and two-stage heat treatment of gels is carried out. It is shown that the stage of calcination has a positive effect on both the crystallization processes and the luminescent properties of the products, and the temperature of this stage is of decisive importance in optimizing the heat treatment mode. Tab. 2, ill. 6, bibliography: 6 titles.
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Hits: 69840
A variant of evaluating the theoretical values ??of the surface energy of quartz glass and various forms of crystalline silica based on an analysis of the structures of these substances and the experimental determination of the zeta potential of b-quartz and amorphous silica is considered. Il. 3, bibliography: 7 titles.
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Hits: 69801
A new technology for processing silicate melts into a super-thin fiber using high-intensity acoustic vibrations is considered. The physical mechanism of liquid dispersion in the presence of an acoustic ultrasonic field has been investigated. An interpretation of the process of fiber formation in an acoustic ultrasonic field is given from the standpoint of the capillary-wave and cavitation theories. The results of industrial approbation of acoustic blowing using specially designed ejection heads are presented. Il. 1, bibliography: 9 titles.
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Hits: 70234
A comprehensive assessment of raw materials, batch and composition of container glass in relation to the efficiency of their use in electric melting has been carried out. It is shown that the redox characteristics of raw materials and charge have a significant effect on the glass-making process and corrosion of molybdenum electrodes. Recommendations for improving the technology of container glass production are given. Tab. 2, ill. 3, bibliography: 8 titles.
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Hits: 70184
It was found that the nature of the concentration dependence of the molar volume of two-component lead-silicate glasses, as well as three-component lead-silicate glasses containing modifier oxides of the first and second groups of the periodic system, is due to the degree of depolymerization of the structural network. The molar volume of the structural network of the considered glasses is additive and is determined by the partial values ??of the molar volumes of its "silica" and "plumbate" components. Tab. 2, ill. 3, bibliography: 15 titles.
