Dielectric properties of spherical dielectric oxide powder and its ceramic-polymer composite

被引：13
|
作者：
Che, S [1 ]
Kanada, I [1 ]
Sakamoto, N [1 ]
机构：
[1] TDK Corp, Mat R&D Ctr, Narita, Chiba 2868588, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2005年 / 44卷 / 9B期
关键词：
dielectric properties; spherical particles; composite materials;
D O I：
10.1143/JJAP.44.7107
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A spherical filler of Ca0.65Sr0.35TiO3 dielectric oxide was prepared by flame fusion to improve the fluidity of ceramic-polymer compounds. The dielectric permittivity of the powder decreased by about 20% after melting-spheroidization but recovered after being heat-treated above 1150 degrees C for 4h. Composite dielectrics made from the spherical powder and a thermosetting polymer exhibited lower viscosity before hardening, thus making it possible to increase the filler concentration by over 5 vol %. A dielectric permittivity between 12 and 19 was achieved by adjusting the filler concentration of the spherical powder in the range of 40 - 70 vol %.
引用
收藏
页码：7107 / 7110
页数：4
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