Dielectric properties of hot-pressed of SiCN/A3S2 nanocomposites

Fa Luo, Dongmei Zhu, Santuan Zhao, Wancheng Zhou

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

A series of nanocomposites, SiCN/A3S2 ceramics, were prepared by hot-pressing method. The nanometer SiCN powder is characterized of high dielectric dissipation. The dielectric properties of the SiCN/A 3S2 nanocomposites were investigated. XRD and SEM were conducted to study the phases and microstructure of the nanocomposites. Compared with the pure A3S2 ceramic, the grain size in the nanocomposites is reduced due to the addition of nanometer SiCN powder. The relative densities of the nanocomposites are also lower than that of the pure A3S2 ceramic. Both the real and imaginary parts of the complex permittivity of nanocomposites in X band increase as the content of SCN powder in the samples rises obviously. When the contents of SiCN powder in samples are same, the real and imaginary parts of the samples vary with the sintering temperature. The tanδ of the nanocomposites reduces from 1.9 to 1.4 when sintering temperature increases from 1450°C to 1650°C. SAED pattern reveals that structure of the SiCN in SiCN/ A3S2 sintered at higher temperatures tend to crystallize. The real, imaginary parts and dissipation factor of the nanocomposites sintered at higher temperature is lower than those sintered at 1450°C.

源语言英语
页(从-至)697-700
页数4
期刊Key Engineering Materials
334-335 II
DOI
出版状态已出版 - 2007

指纹

探究 'Dielectric properties of hot-pressed of SiCN/A3S2 nanocomposites' 的科研主题。它们共同构成独一无二的指纹。

引用此