Sintering characteristic, structure, microwave dielectric properties, and compatibility with Ag of novel 3MgO-B2O3-xwt% BaCu(B2O5)-ywt% H3BO3 ceramics
Autor: | Haiquan Wang, Shixuan Li, Kangguo Wang, Xi Wang, Hailin Zhang, You Wu, Xiuli Chen, Huanfu Zhou |
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Jazyk: | angličtina |
Rok vydání: | 2022 |
Předmět: | |
Zdroj: | Journal of Asian Ceramic Societies, Vol 10, Iss 2, Pp 346-355 (2022) |
Druh dokumentu: | article |
ISSN: | 21870764 2187-0764 |
DOI: | 10.1080/21870764.2022.2053277 |
Popis: | In this study, 3MgO-B2O3-xwt%BaCu(B2O5) (BCB)-ywt%H3BO3 (2 ≤ x ≤ 8, 0 ≤ y ≤ 20) ceramics were sintered at the optimum temperature to form Mg3B2O6 and MgO phases. The effects of H3BO3 and BCB on the product characteristics, phase transition, microstructure, and microwave dielectric properties of 3MgO-B2O3 ceramics were investigated. The intensities of diffraction peaks of two phases varied with changing the x and y values. After sintering at 950°C, the ceramics with x = 6 and y = 15 achieved the excellent microwave properties with a εr of 6.72, Q × f of 83,205 GHz and τf of – 65.05 ppm/°C. Besides, the ceramics with x = 8 and y = 5 sintered at 925°C also achieved good microwave dielectric properties with a εr of 6.64, Q × f of 78,173 GHz and τf of – 57.27 ppm/°C. The sintering temperatures of above both ceramics are well lower than the melting point of Ag, showing promising applications in low temperature cofired ceramic devices. In particular, these two ceramics can be used as the potential candidate materials for microwave ceramics for 5 G technology, provided that τf can be further optimized. |
Databáze: | Directory of Open Access Journals |
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