Abstract
The effects of B2O3–LiF addition on the phase composition, microstructures, and microwave dielectric properties of (Mg0.95Cu0.05)2SiO4 ceramics fabricated by a wet chemical method were studied in detail. The B2O3–LiF was selected as liquid-phase sintering aids to reduce the densification sintering temperature of (Mg0.95Cu0.05)2SiO4 ceramics. The B2O3 6%–Li2O 6%-modified (Mg0.95Cu0.05)2SiO4 ceramics sintered at 1200°C possess good performance of εr ∼ 4.37, Q×f ∼ 36,700 GHz and τf ∼ −42 ppm/°C.
Highlights
E B2O3–LiF co-doped (Mg1−xCux)2SiO4 ceramics were sintered at 1000–1350°C for 4 h
2 Li2B4O7 3 Mg2Si grains became lager and denser with increasing sintering temperature. ree types of grains were observed in the specimens of B2O3–LiF-doped (Mg0.95Cu0.5)2SiO4 ceramics
In order to understand the distribution of the elements in the sample, the EDS of (Mg0.95Cu0.5)2SiO4 with 12% B2O3–LiF ceramics sintered at 1150°C for 4 h is shown in Figure 3(f )
Summary
E B2O3–LiF co-doped (Mg1−xCux)2SiO4 ceramics were sintered at 1000–1350°C for 4 h. Ree types of grains were observed in the specimens of B2O3–LiF-doped (Mg0.95Cu0.5)2SiO4 ceramics.
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