Catalog

Main characteristics of the manufactured product

Porous ceramics^{unique development}

Our enterprise has developed a unique technology for producing products from oxide-beryllium ceramics of nuclear grade according to ASTM C708-16.

Ceramic porosity can reach 90%, pore size from 10 to 200 microns. The developed technology allows to provide stability of ceramic density readings within ±0.1 g/cm3. Stability of geometric sizes estimated by measuring the change of density before and after heat treatment at temperature of 1773 ºK with dwell time not less than 24 hours amounts to less than 1%.

This material is used in the construction of a nuclear reactor, for effective removal of heat released due to fission of uranium dioxide nuclei, or as a moderator and reflector of neutrons in nuclear power installations.

In 2021 our company successfully passed certification and supplied porous oxide-beryllium ceramics of nuclear purity for the Korean company KAERI, which is the only research institute in Korea specializing in nuclear energy.

Photo of products from composite (BeO + TiO2)-ceramics with metallization applied by condensation in vacuum

Black ceramic^{unique development}

For high-power TWL devices (traveling wave lamps) it is necessary to create microwave absorbing materials of increased thermal conductivity. For this purpose it is necessary to use high thermal conductivity composite ceramics, one of the components of which must be well pass microwave radiation, and the other absorb. One of such promising materials manufactured by "KAZ CERAMICS" LLP is ceramics containing BeO and TiO2 powder. Produced bulk microwave energy absorbers in addition to the absorption properties and high thermal conductivity have structural stability, homogeneity of electrical properties, stability of properties in a wide temperature range. As a result of sintering in a reducing hydrogen environment of oxide-beryllium ceramics with the addition of TiO2 micropowders, its density and electrical conductivity increase, the ability to absorb electromagnetic radiation in a wide frequency range appears. The most effective material is the composition in which the mass content of TiO2 in the BeO ceramic is 30 wt.%, that is, BeO + 30 % TiO2, (hereafter % by mass). Such ceramics are called BT-30. The attenuation factor of microwave radiation passing through the ( ВеО + TiO2)-ceramics in the frequency range of 8.5 - 12 GHz is 19 - 20 dB. The increase in the carbon admixture in the ceramics is accompanied by an increase in the electrical conductivity of ( ВеО + TiO2)-ceramics.

Plates, boards, rods, holders, bases, washers

With dimensions from 2 to 106 mm, a thickness of 0.5 to 10 mm

Disks

With dimensions from 2 to 106 mm, a thickness of 0.5 to 10 mm

Crucibles for metal melting

Capacity from 30 to 2000 ml

Bushings of various configurations

Metal coating and no metal coating

Ceramics of the BeO+TiO2 composition

With the ability to effectively absorb microwave electromagnetic radiation (the tangent of dielectric loss angle at a frequency of 1•1010 Hz, no less than 0.2))

Tubes and thermocouple covers

With an outer diameter from 2 to 80 mm and inner diameter from 0.3 to 60 mm, length up to 500 mm

Rods

With different configurations, either round or rectangular cross-section, length up to 500 mm

In addition:

The chip carrier for powerful microwave transistors
Waveguides windows for powerful microwave devices
Thermally conductive insulator for assembling transistors and diodes (washers and disks with holes)