Development of a vacuum-tight ceramic material with stable dielectric parameters

The efficiency and reliability of modern equipment largely depend on the stability of the properties of the materials used. Due to their design features, most microwave devices use vacuum-tight ceramics with specific values of dielectric constant and dielectric loss tangent. The main disadvantage of the current ceramic materials is the lack of stability in their dielectric parameters.

The goal of this work is to develop a technology for producing a vacuum-tight ceramic material with a dielectric constant of 9.5±0.2 and a consistently low dielectric loss.

Comprehensive research on the use of eutectic additives and the development of firing modes allowed us to create and implement a new composition of corundum ceramic material with a dielectric constant of 9.5±0.2 and a consistently low value of dielectric losses. The developed composition of vacuum-tight ceramics based on various grades of alumina is made entirely from domestic raw materials.

The new material has been successfully used in the creation of receiving antennas for onboard satellite navigation equipment.