| 摘要 |
PROBLEM TO BE SOLVED: To provide a dielectric ceramic composition which has a low dielectric constant, a high Q value, low TC and a sintering temperature of <=900 deg.C, and is suitable in a microwave region. SOLUTION: When ZnO, SiO2 and BaO in the dielectric ceramic composition containing Al2 O3 , ZnO, SiO2 , CuO, B2 O3 and BaO are expressed by the ternary diagram of ZnO-SiO2 -BaO, they lie within the ranges respectively consisting of, by weight, 50%:30%:20% (point A), 30%:50%:20% (point B), 20%:30%:50% (point C), and 45%:20%:35% (point D). Also, by weight, 70 to 93% ZnO-SiO-BaO, 6 to 20% Al2 O3 , 0.5 to 5% CuO and 0.5 to 5% B2 O3 are contained. |
