Abstract
The effects of H3BO3 additive on the sintering behavior, phase composition, microstructure and microwave dielectric properties of CoZrNb2O8 ceramics were investigated based on the research of pure-phase CoZrNb2O8 (CZN) ceramics. When 2.5 wt% H3BO3 was added to CoZrNb2O8 ceramics, the sintering temperatures significantly decreased from 1250 to 1200 °C due to the formation of liquid phase. The ceramic sintered at 1200 °C for 4 h exhibited excellent microwave dielectric properties of ε r = 21.62, Q·f = 40,200 GHz and τ f = −16.38 ppm/ °C. Compared to the results of CZN ceramics, the H3BO3 additives effectively lowered the sintering temperature of CZN ceramics due to the liquid phase effect without detrimental effect on the properties.
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Acknowledgments
This work was supported by the project development plan of science and technology of Jinan City (No. 201303061), Jinan City Youth Science and Technology Star Project (No. 2013035), the National Training Plan Innovation Project of college students (No. 201510427001) and National Natural Science Foundation (No. 51472108) and Study Abroad Programs by Shandong Province Government.
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Bi, J.X., Xing, C.F., Jiang, X.S. et al. Low temperature sintering and microwave dielectric properties of CoZrNb2O8 ceramics with H3BO3 addition. J Mater Sci: Mater Electron 27, 6564–6569 (2016). https://doi.org/10.1007/s10854-016-4601-7
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DOI: https://doi.org/10.1007/s10854-016-4601-7