Microwave dielectric properties of Ca2P2O7

被引：81
作者：
Bian, JJ [1 ]
Kim, DW [1 ]
Hong, KS [1 ]
机构：
[1] Seoul Natl Univ, Coll Engn, Sch Mat Sci & Engn, Seoul, South Korea
来源：
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 14期
关键词：
bond valence; calcium pyrophosphate; microwave dielectric properties;
D O I：
10.1016/S0955-2219(03)00138-9
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：
Microwave dielectric properties of alpha- and beta-Ca2P2O7 ceramic materials were investigated, by a network analyzer at the frequency of 10 GHz. It was found that beta-Ca2P2O7 could be sintered at 1150 degreesC for 2 h with high bulk density (98% TD) and alpha-Ca2P2O7 could be sintered at 1290 degreesC/4h with bulk density of 95.8% TD. The dielectric constant (epsilon(r)) of beta-Ca2P2O7 sintered at 1150 degreesC/2 h is 8.4, the temperature coefficient of resonant frequency (tau(f)) is -53 ppm/degreesC, and the Q x f value is 53,500 GHz. alpha-Ca2P2O7 sintered at 1290 degreesC/4 It has epsilon(r) of 7.8, tau(f) of -97 ppm/degreesC and Q x f value of 14,115 GHz. (C) 2003 Elsevier Ltd. All rights reserved.
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页码：2589 / 2592
页数：4
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