VOL 92, No. 5 (2019)

A highly efficient method of laser removal of indium oxide films doped with tin In ₂ O ₃ (Sn) from the surface of soda-lime-silicate glass used for the manufacture of glazing products for railway transport has been proposed. This method makes it possible to increase the productivity of work tenfold without deteriorating the strength characteristics of transport structural glass products while reducing the harmful environmental impact of production on the environment.

The results of a study of the physical and mechanical characteristics of fiberglass modified with carbon nanotubes are presented. An epoxy binder was chosen as a polymer matrix; glass fibers were used as a macroscopic filler. Multilayer carbon nanotubes were used as a modifying additive. The analysis of the mechanical characteristics of polymer composites is carried out depending on the geometric parameters of carbon nanotubes.

The formation of highly dispersed SiO ₂ particles in the process of quartz glass grinding in the manufacture of ceramic products has been investigated. A method for determining the quantitative content of highly dispersed silica in a slip based on quartz glass has been developed and tested. The concentration of highly dispersed SiO ₂ particles in various batches of slip has been determined. The influence of the content of the colloidal component in the slip on the sintering process of the ceramic material has been evaluated.

The structures of two types of soft porcelain (bone china and parian) have been investigated. The features of the structure of these materials are revealed, which determine the combination of pronounced properties of whiteness and translucency in them: uniformity, high content of the glassy phase, well-developed interface of particles of the dispersed phase. The effect of changing the firing conditions on the color characteristics of these types of porcelain has been established. Parian has a more homogeneous structure than bone china, since the scatter of data on the average distance between grains at the same confidence level of 0.95 is much less than that of bone china.

Composite ceramics of granular silicon carbide, precipitation hardened by eutectic additives of the Al ₂ O ₃ -MnO-TiO ₂ system, have been obtained. The effect of a dispersed eutectic powder in the Al ₂ O ₃ -MnO-TiO ₂ system is considered depending on the ratio of silicon carbide / eutectic additive: 99/1 , 97/3 and 95/5 and pressing pressure on the sintering performance of a ceramic matrix composite based on granular silicon carbide. It was found that after firing at 1350 & # 176; C and a pressing pressure of 200 MPa with the introduction of 5 & # 37; (mass content) of the eutectic additive of composition A or B, the porosity is 5.6 and 4.1 & # 37; and the flexural strength reaches 65 & # 177; 5 and 85 & # 177; 5 MPa respectively

A wonderful person has passed away - Eduard Pavlovich Sysoev. All labor activity of E.P. Sysoev is inextricably linked with the development and formation of the silicate industry in our country.
All his life Eduard Pavlovich was distinguished by diligence, initiative and an active life position. He enjoyed a well-deserved prestige among colleagues at work, specialists, scientists in the field of ceramics and refractories. Eduard Pavlovich brought up a whole galaxy of young scientists who continue today his favorite work, to which he devoted his whole life.

An overview of domestic and foreign studies on the use of ash and slag waste from thermal power plants as raw materials in the production of foam glasses and glass-crystalline foams is presented. It is shown that in a number of cases the use of waste leads to an improvement in the properties of materials.

It is proposed to use natural raw materials - ferruginous diatomites from the Zhalpak deposit (Kazakhstan) as an affordable cheap raw material for obtaining complex iron oxide silica-containing pigments. Pigments with different colors were obtained. The mineralogical composition, shape and size of particles, their specific surface area and total pore volume have been established by the methods of electron microscopy, BET analysis, M?ssbauer and X-ray phase spectroscopy. According to the results of scanning electron microscopy, diatomite particles, as a result of thermal activation and mechanical action, acquire a spherical shape with a size of 5 - 10 microns.

An improved design of a twin-screw charge loader into a glass-making furnace is presented. It is noted that changing the shape of the pushing gate and equipping it with two side sections of a trapezoidal shape allows, with additional rotation of the pusher console around its axis, to optimize the process of distributing the charge over the glass mirror in a sealed loading pocket.