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January 28th, 2010

Microwave Dielectric Properties and Chemical Resistance of Low-Temperature-Sintered CaZrB2O6 Ceramics

Published on January 28th, 2010 | By: pwray@ceramics.org

Volume 6 Issue 5, Pages 587 – 592

 

Hyo Tae Kim, Myoung-Hwa Nam, Jong-Hee Kim, Sahn Nahm
Published
Online: Apr 7 2009 4:32PM

DOI: 10.1111/j.1744-7402.2009.02381.x

 

ABSTRACT
Dolomite-type borate ceramics consisting of CaZrB2O6
were synthesized via a conventional solid-state reaction route;
low-temperature sintering was explored using Bi2O3–CuO
additives of 1–7 wt% for low-temperature co-fired ceramics
applications. For several sintering temperatures, the microwave
dielectric properties and chemical resistance of the ceramics were
investigated. The CaZrB2O6
ceramics with 3 wt% Bi2O3–CuO
addition could be sintered below 925°C, and the microwave dielectric
properties of the low-temperature samples were ɛr=10.55,
Q×f=87,350 GHz, and τf=+2 ppm/°C.
The chemical resistance test result showed that both CaZrB2O6
and Bi2O3–CuO-added
CaZrB2O6 ceramics were
durable in basic solution but were degraded in acid solution.

 

Online Access to Journal of Applied Ceramic Technology


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