A NEW MICROWAVE CERAMIC - POLYMER COMPOSITE WITH 0-3 CONNECTIVITY

被引：0
|
作者：
Czekaj, D. [1 ]
Micior, J. [1 ]
Lisinska-Czekaj, A. [1 ]
机构：
[1] Univ Silesia, Dept Mat Sci, PL-41200 Sosnowiec, Poland
来源：
ARCHIVES OF METALLURGY AND MATERIALS | 2014年 / 59卷 / 01期
关键词：
BiNbO4; microwave ceramics; PVDF; ceramic-polymer composite; 0-3; connectivity; dielectric properties; IMPEDANCE SPECTROSCOPY; FABRICATION;
D O I：
10.2478/amm-2014-0037
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Goal of the present research was to fabricate and study two-phase BiNbO4//PVDF composites with 0-3 connectivity. Such composite consists of there-dimensionally connected polymer matrix loaded with dielectric ceramic particles. In the present case BiNbO4 powder acted as an active phase (dispersed phase) whereas polyvinylidene fluoride (PVDF) acted as a non-active (passive) phase (matrix). BiNbO4// PVDF composites with the volume fraction of the ceramic phase c(V) =2, 4, 6, 8, 10, 16 and 20 vol. % were prepared. Average grain size of BiNbO4 powder was < d >=1.86 mu m. It was found that BiNbO4 powder exhibited orthorhombic symmetry with Pnna (52) space group and PVDF polymer powder was alpha-phase. Minimum of dielectric losses at room temperature were found within the frequency range Delta v = 10(3)-10(4) Hz. It was found that composite with c(V) = 10% of ceramic powder exhibited lower values of dielectric permittivity.
引用
收藏
页码：231 / 235
页数：5
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