International Scientific Journals
of Scientific Technical Union of Mechanical Engineering "Industry 4.0"

Using innovative technology, high alumina corundum ceramic products for ballistic protection have been produced and their elastic, physical and mechanical characteristics have been tested. The products are of different shape and thickness and are applied in the construction of the front layer of macro-dispersed ceramic-polymer modular systems for individual protection and for armoring of aircraft, of water and land mobile and stationary military objects, and the like.

Boron carbide ceramic products are made using an innovative technology and their elastic and static properties are tested. The products are of different shape and thickness and can be user to build the front layer of macro dispersal ceramic-polymer modular systems for individual protection and for armoring of military land and air mobile and stationary objects.

High-temperature synthesis of corundum and boron carbide ceramics was performed and the physical and chemical indicators of the obtained products were determined. Their suitability as a components of individual protection systems is assessed by ballistic tests.

Sol gel method is a simple a low cost technique, which gives possibility to deposit coatings with definitely chemical and phase composition at low temperatures. Here we report an application of sol gel method by dip coating technique to prepare a several type of nanosized coatings: (a) one-component coatings such as TiO2 and Nd doped TiO2 (b) two types of bi-component layers, which contain as underlayer SiO2 and upper layer TiO2 or CeO2. The coatings were characterized by XRD, SEM and AFM analyses. The XRD data revealed anatase phase for TiO2 and Nd doped TiO2 coatings. The presence of cubic CeO2 and SiO2 crystallographic phases were proved in SiO2/CeO2 sample. The morphological investigations of the coatings revealed that they have relatively dense surface. The anticorrosion properties were estimated by exposing the samples to the action of salty solution of 3.5% NaCl and was evaluated by their weight losses. Corrosion attack induces insignificant alteration of the surface morphology of both Nd doped TiO2 samples and multilayer barrier coatings. Pits and other significant visible signs of corrosion are not found according to AFM and SEM analyses. The results proved that the investigated bi-component oxide coatings on the base of titania and ceria deposited on SiO2 exhibit better corrosion resistance than the noncoated steel and one component samples. These type of oxide coatings could be perspective for various applications in industry due to their good anticorrosion properties.

The article is devoted to an up-to-date material for heat and sound insulation. A technology for production of granulated foam glass from glass waste is developed based on horizontal model of machine for foaming, tempering and cooling granules. Mechanical and thermo-physical indicators for obtained foam glass are investigated.