Low-firing, temperature stable and improved microwave dielectric properties of ZnO TiO2Nb2O5 composite ceramics
Source abstract
Abstract
This article presents low-firing, low-loss and temperature stable ZnOTiO2Nb2O5 microwave dielectric composite ceramics with the assistance of lithium borosilicate (LBS) and zinc borosilicate (ZBS) glass frits. There is a liquid phase (eutectic mixture) generated by LBS (ZBS) glass, and solid particles could be wetted and dissolved. Therefore, the migrations and rearrangements of particles could be performed. Besides, compared with ceramics undoped with glass frits, lower activation energies (Ea) of ceramics doped with LBS and ZBS glass suggest that the low-temperature sintering behavior is easier to carry out. The results indicated that LBS and ZBS glass both are effective sintering aids to accelerate the sintering process and improve the microwave dielectric properties of composite ceramics by controlling the phase compositions under low temperature. Combination great properties of ZnOTiO2Nb2O5 ceramics were obtained when sintered at 900 °C for 4 h: εr = 36.7, Q × f = 20,000 GHz, τf = 7 ppm/oC.
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Research context
OpenAlex topics: Microwave Dielectric Ceramics Synthesis · Ferroelectric and Piezoelectric Materials · Electromagnetic wave absorption materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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