VOL 92, No. 10 (2019)

Considered two types of glass blemish & # 171; black dots & # 187; - chromite and silicon. Methods for establishing their nature and the most probable reasons for their appearance are presented.

The features of the action of a femtosecond laser beam on antimony-containing lithium-aluminosilicate glass and glass-ceramic obtained from it by heat treatment with a coefficient of thermal expansion close to zero in a wide temperature range are studied. Both in the non-thermal and thermal regimes of laser action, a local decrease in the refractive index in the regions of the sitall modified by the laser beam was demonstrated, which in the non-thermal regime reaches 0.002. The main reason for the decrease in the refractive index, most likely, is the partial amorphization of the crystalline phase of & # 946; -eucryptite

The aim of the International Competition & # 171; Glass Industry Leader 2019 & # 187; is to attract the attention of consumers to persons and companies working in the glass industry. Achieving success in this most complex area of ??entrepreneurship is inextricably linked to the development of management science. For a comprehensive assessment of the competition materials, scientific data will be used in the analysis of the most important management solutions and the use of technologies for the activities of the competition participants
Additional information can be obtained on the official industry portal: www.steklosouz.ru

The preparation of a composite filling material consisting of an inorganic filler in the form of finely ground glass and a polymer matrix is ??considered. The results of experimental studies on the comparative assessment of the value of water absorption and water solubility of various composite dental materials of chemical curing are presented.

The features of the use of plow dumpers in the lines for transporting the charge and cullet to the hoppers of the loaders of the glass furnace are considered. An improved design of a plow spreader equipped with an electromagnetic vibrator is presented. An adaptive algorithm for controlling the unloading of batch and cullet from a belt conveyor is presented. The possibility of additional mixing of these materials on a conveyor belt is shown.

Honored Worker of Higher School of the Russian Federation, Academician of the Russian Academy of Natural Sciences, Honorary Worker of the Glass Industry, Doctor of Technical Sciences, Professor of the Department of Glass-Ceramics Technology, Belgorod State Technological University named after V.G.Shukhova (BSTUim. V.G.Shukhov) Nina Ivanovna Minko October 11, 2019 marks 85 years of birth and 62 years of pedagogical, industrial, scientific and social activity.
Today Nina Ivanovna Minko works with her usual purposefulness, devotes a lot of time to work with students, graduate students and doctoral students, is full of creative plans, is working on the next monograph & # 171; Glass cullet: science and practice of use & # 187 ;, is a member of the dissertation council. She is characterized by optimism, responsibility, hard work, goodwill towards people, the ability to deal with difficulties and overcome them.

Investigations of changes in the phase composition and structure of modern ceramic materials under the action of a high-intensity light flux have been carried out. For the experiment, the technological capabilities of a unique installation - the Large Solar Furnace - were used. It is shown that the surface treatment of the ceramic material of the Al ₂ O ₃ -SiO ₂ system with a highly concentrated energy source leads to the appearance of two new phase components - & # 945 ; -Al ₂ O ₃ and cristobalite. Reflow material processing contributes to the formation of the eutectic component

The synthesis of an inorganic heat-insulating material - glass-foam ceramics with the use of activating methods for preparing a charge in the form of its extrusion and autoclaving is considered. The interaction of the amorphous phases of the opalcristobalite rock with NaOH intensifies, resulting in a significant decrease in the average density of the material. The economic effect is achieved due to a proportional reduction in the content of expensive sodium hydroxide in the material. The introduction of an additive for container cullet into the charge contributes to an even more significant decrease in the average density of samples and a reduction in the consumption of NaOH, and, consequently, to a reduction in the cost of foam glass ceramics.

It is shown that the addition of antimony oxide to the composition of the lithium-aluminosilicate glass of the sitall-forming composition makes it possible to suppress the often observed effect of glass cracking during its crystallization at temperatures above 700 ° C. It was found that the introduction of Sb ₂ O ₃ does not change the phase composition of the resulting sitall. A scenario of the introduction of antimony atoms into the residual glass phase is proposed, which describes the observed effect