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Journal of Materials Science: Materials in Electronics
Erschienen in: Journal of Materials Science: Materials in Electronics 8/2018

19.01.2018

Reaction sintering of a rock salt structured Li4WO5 ceramic and its microwave dielectric properties

verfasst von: Kai Xiao, Chunchun Li, Huaicheng Xiang, Liang Fang

Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 8/2018

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Abstract

Rock salt structured Li4WO5 ceramics were prepared by the reaction sintering method. Without calcination, a mixture of Li2CO3 and WO3 were sintered directly. XRD shows that a single orthorhombic Li4WO5 phase was obtained throughout the sintering temperature range 870–910 °C. Dense ceramic with a high relative density ~ 94.2% was achieved through reaction sintering at 880 °C. Excellent microwave properties with ε r  = 9.1, Q × f = 43,000 GHz, and τ f  = − 3 ppm/°C were obtained. In contrast with the conventionally sintered ceramics, it should be noted that the reaction sintered samples have a higher permittivity and quality factor. These results show that the reaction sintering can enhance the densification of Li4WO5, which in turn would improve the dielectric performances.
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Metadaten
Titel
Reaction sintering of a rock salt structured Li4WO5 ceramic and its microwave dielectric properties
verfasst von
Kai Xiao
Chunchun Li
Huaicheng Xiang
Liang Fang
Publikationsdatum
19.01.2018
Verlag
Springer US
Erschienen in
Journal of Materials Science: Materials in Electronics / Ausgabe 8/2018
Print ISSN: 0957-4522
Elektronische ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-018-8619-x

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