VOL 88, No. 7 (2015)

Samples of catalytic ceramic membranes based on the CeO ₂? ZrO ₂ system by the sol-gel method have been synthesized. The morphology, phase composition and porous structure of membranes were investigated.

Zn ₂ TiO ₄ - ZnO ceramic samples were obtained using zinc and titanium oxide nanopowders. Phase formation, as well as the microstructure and elemental composition of the phases being formed, have been studied by electron microscopy. The density and porosity were calculated, and the sizes of the grains and pores of the ceramics were estimated. The temperature at which zinc titanate is formed has been determined. It is shown that it corresponds to the sintering temperature of electrocontact materials of the given composition. Titanate and zinc oxide are supposed to be used as an arc extinguishing and dispersion-strengthening additive in copper-based electrical contact materials.

With the development of non-ferrous metallurgy, the requirements for the quality of the produced metals and products from them are increasing. During the production of aluminum, it is necessary to remove impurities present in the melt. A brief overview of the types of impurities in the aluminum melt and methods of their removal by means of melt filtration is given. Existing ceramic filters and methods of their manufacture are considered.

The results of treatment with a microwave field of silicates (bentonite clay and quartz sand), the effect of the field on the structure and technological characteristics of aqueous suspensions of silicates, physical and mechanical characteristics of ceramic material obtained on their basis are considered. The role of additives (hydrosol of aluminum oxide and aluminum-containing galvanic sludge) on the technological characteristics of aqueous suspensions of silicates and the physical and mechanical properties of ceramic material based on them has been investigated.

The possibilities of using concentrated solar energy to create a light-emitting technology for producing art items with glass enamel are considered. Calculations have been carried out to select the optimal modes of the art enameling process on specially prepared wire frames

The description of the information system containing reference information on the physicochemical, biological properties of orthophosphates, pyrophosphates and ultraphosphates of calcium is given. In addition to reference information, the system contains an array of publications from various domestic and foreign search engines on the presented classes of calcium phosphates, as well as implantation materials based on them. The descriptions of the user and search interfaces of the system intended for specialists in the field of inorganic materials and medical materials science are given.

The results of the development of compositions of raw material compositions of transparent shiny glaze coatings used for the production of ceramic high-voltage porcelain insulators are presented. The area of ??the content of raw materials, providing the formation of defect-free coatings with the required set of dielectric characteristics, has been established.

A mathematical model has been developed on fuzzy sets, which describes the dependence of the deviation of the shape of bent automobile glasses on the tempering mode. An adaptive algorithm for controlling the hardening mode using simplex planning is proposed. Simulation modeling shows the possibility of improving the quality of produced hardened glasses on existing equipment by automating the control of the hardening technological process.

It is proposed to use modified Petri nets, describing the operations that make up the technological process of preparing a glass batch, as control models of the technological process to ensure the efficiency of control over the preparation of glass batch in accordance with a given technical regulation due to the synchronization and consistency of the functioning of technological equipment