標題: Effect of B2O3 nano-coating on the sintering behaviors and electrical microwave properties of Ba(Nd2-xSmx)Ti4O12 ceramics
作者: Chang, LC
Chiou, BS
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: oxide;microwave dielectric properties;ceramics;liquid phase sintering
公開日期: 1-Jul-2004
摘要: Ba(Nd0.8Sm0.2)(2)Ti4O12 ceramics prepared by conventional solid-state sintering have a dielectric constant of about 80 and a nearly zero temperature coefficient of resonant frequency; however, the sintering temperature is above 1350degreesC. Doping with B2O3 (up to 5 wt%) promotes the densification and dielectric properties of BNST ceramics. It is found that coating BNST powder with thin B2O3 layer of about 180 nm reduces the sintering temperature to below 1020degreesC. The effects of B2O3 nano-coating on the dielectric microwave properties and the microstructures of BNST ceramics are investigated. Ninety-six percent of theoretical densities is obtained for specimens coated with 2 wt% B2O3 sintered at 960degreesC and the samples exhibit significant (002) preferred orientation and columnar structure.
URI: http://dx.doi.org/10.1007/s10832-004-5200-1
http://hdl.handle.net/11536/26656
ISSN: 1385-3449
DOI: 10.1007/s10832-004-5200-1
期刊: JOURNAL OF ELECTROCERAMICS
Volume: 13
Issue: 1-3
起始頁: 829
結束頁: 837
Appears in Collections:Conferences Paper


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