Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17548
Title: Influence of multi-component glass on sintering behavior and microwave properties of Zr non-stoichiometricly substituted Ca[(Li 1/3Nb 2/3)]O 3-δ ceramic
Authors: Hu, M
Fu, Y
Zhou, D
Gu, H
Wang, Y 
Issue Date: 2012
Publisher: Springer
Source: Journal of materials science : materials in electronics, 2012, v. 23, no. 10, p. 1775-1782 How to cite?
Journal: Journal of materials science : materials in electronics 
Abstract: A low melting point multi-component glass (Li 2O-B 2O 3-SiO 2-CaO-Al 2O 3) was incorporated into Zr non-stoichiometric substituted Ca[(Li 1/3Nb 2/3)]O 3-δ ceramic to lower its sintering temperature for LTCC applications. The glass acts as liquid phase sintering aid and it can lower the sintering temperature of the ceramic from 1,170 °C to 900 °C. Dense and perovskite solid solutions can be obtained in all glass doped specimens with, however, a small amount of Ca 2Nb 2O 7-type pyrochlore phase. Raman spectra indicate that the B-site 1:2 ordering structure in Ca[(Li 1/3Nb 2/3) 0.95Zr 0.15]O 3+δ ceramic is gradually softened with the increase of the glass content and localized B-site 1:1 ordering domains begin to appear when the glass content reaches 15 wt%. The optimal microwave dielectric properties of ε r = 29.37, Qf = 5,420 GHz and τ f = -24.9 ppm/°C can be obtained in 5 wt% glass doped Ca[(Li 1/3Nb 2/3) 0.95Zr 0.15]O 3+δ ceramic when sintered at 940 °C for 4 h. No chemical reaction exists between Ag and the above ceramic, which indicates itself a potential candidator in LTCC industry.
URI: http://hdl.handle.net/10397/17548
ISSN: 0957-4522
EISSN: 1573-482X
DOI: 10.1007/s10854-012-0661-5
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