Low dielectric loss ceramics of AlN fine and nanopowders

被引：23

作者：

Fesenko, IP ^{[1
]}

Kuzenkova, MA ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Superhard Mat, UA-252143 Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2002年 / 41卷 / 11-12期

关键词：

aluminum nitride; dielectric properties; microwaves; hyperthermal therapy;

D O I：

10.1023/A:1022971901062

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The dielectric properties of ceramics pressurelessly sintered from nano (10-100 nm) and fine (0.8-1.0 mum) aluminum nitride powders have been studied. High-purity aluminum nitride sintered from nanopowder of nearly-theoretical density has been found to exhibit a low dielectric constant epsilon = 63 and low loss, tgdelta = 0.011 at 3.32 GHz. Ceramics sintered from a fine aluminum nitride powder doped with yttrium oxide have revealed epsilon = 7.7 and tgdelta = 0.021 at 3.23 GHz. The dielectric properties have allowed us to use ceramics sintered from fine aluminum nitride powder as a material for microwave windows for the diagnosis and treatment of tumors of the larynx and breast.

引用

页码：567 / 569

页数：3