A simple and an effective method for the fabrication of densified glass-ceramics of low temperature co-fired ceramics

This study reports a new, simple and effective pre-calcined method for fabrication BaO–TiO2–B2O3–SiO2 low temperature co-fired ceramics (LTCC) at a sintering temperature below 900 °C, and with dielectric losses (tan δ) lower than 2 × 10−3. The research results have shown that the addition of 2–5 wt% Al2O3 could easily eliminate the porosity of the glass-ceramics because of the excellent wetting behavior between alumina and the BaO–B2O3–SiO2 glass liquid phase in the low temperature co-fired ceramic system.