Glass Ceramic Based on Corundum Modified with Borosilicate Glass for LTCC Technology Application

This paper presents a process for obtaining glass ceramics based on corundum modified by borosilicate glass with various additives. The described Al₂O₃ /SiO₂–B₂O₃–CaO–MgO–Na₂O–K₂O system has been developed for use in LTCC technology and exhibits a sintering temperature of less than 950°C. The impact of varying the sintering additive content on the firing temperature, microstructure, ceramic, and electrophysical properties of the resulting ceramics was investigated. The developed material exhibited a dielectric constant of ε_r= 6.73 – 6.82 and tangent of the dielectric loss angle of tan δ = 8.0 – 8.6 × 10 ^–3 at a frequency of f = 1 MHz.