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Effects of 0.5B2O3–0.5CuO on the microwave dielectric properties of low-temperature sintered ZZNT ceramics by Zheng Sun; Xiaosong Lvu; Weijia Luo; Jingda Guo; Qiuyue Wang; Jingru Hua is a Materials Science article available to read on EtoBox.

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The effects of BCu (0.5B 2 O 3 -0.5CuO) additive on the microstructure and microwave dielectric properties of ZZNT (0.3ZnZrNb 2 O 8 -0.7TiO 2 ) ceramics were investigated in the current study. The findings suggested that a small amount of BCu was capable of significantly reducing the sintering temperature from 1150 • C to 940 • C. Furthermore, only rutile-like ZnCuTiO 4 and Zn 0.17 Nb 0.33 Ti 0.5 O 2 secondary phases were detected and characterized. Based on the observations, the cooling mechanism was ascribed to the formation of low-melting-point liquid phases. Additionally, the specimen comprising 2 wt% BCu, which was sintered at 940 • C for 6h demonstrated excellent dielectric properties with ε r , Q × f ~, and τ f values of 40.6, 28,800 GHz, and -4.1 ppm/ • C, respectively. Moreover, the tape-casting low-temperature sintered ceramics demonstrated excellent chemical compatibility with the Ag electrode during the sintering process, establishing an extremely promising material for low temperature co-fired ceramics (LTCC) applications.

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Author

Zheng Sun; Xiaosong Lvu; Weijia Luo; Jingda Guo; Qiuyue Wang; Jingru Hua

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Materials Science (Physical Sciences)