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Rare Metals

Erschienen in:

05.07.2015

Dielectric properties of AlN/Mo composite ceramics prepared by spark plasma sintering method at different processing conditions

verfasst von: Peng Gao, Cheng-Chang Jia, Wen-Bin Cao, Cong-Cong Wang, Guo-Liang Xu, Dong Liang, Zhao-Wen Cui

Erschienen in: Rare Metals | Ausgabe 4/2022

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Abstract

In this study, the effects of powder mixed method, sintering temperature, and the additive amount of the conductive phase on the dielectric loss tangent and permittivity constant of AlN/Mo composite ceramics were investigated. All the ceramic samples were prepared by spark plasma sintering (SPS). AlN composite ceramics with additional 10 vol% Mo sintered at 1400 °C holding for 5 min exhibit the best dielectric loss tangent, which is greater than 0.23. AlN/Mo ceramics with additional 20 vol% Mo become conductive, with the resistivity of 0.05–0.06 Ω·m. High-energy ball milling is better than magnetic stirring powder mixing method. In addition, the additive Mo and lower sintering temperature lead to a better property with the increase in the electromagnetic wave frequency range of 1 × 10³–1 × 10⁶ Hz.

Vorheriger Artikel Skin effect of WC–8 wt% Co alloy by microwave sintering

Nächster Artikel Photoelectric properties of β-Ga2O3 thin films annealed at different conditions

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Titel: Dielectric properties of AlN/Mo composite ceramics prepared by spark plasma sintering method at different processing conditions
verfasst von: Peng Gao
Cheng-Chang Jia
Wen-Bin Cao
Cong-Cong Wang
Guo-Liang Xu
Dong Liang
Zhao-Wen Cui
Publikationsdatum: 05.07.2015
Verlag: Nonferrous Metals Society of China
Erschienen in: Rare Metals / Ausgabe 4/2022
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI: https://doi.org/10.1007/s12598-015-0486-5

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