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Erschienen in:
01.06.2009
Low temperature sintering and dielectric properties of Ba2Ti3Nb4O18 ceramics for silver co-sintering application
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2009
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Abstract
Low temperature sintering and dielectric properties of Ba2Ti3Nb4O18 ceramics with ZnO–B2O3–SiO2 (ZBS) frit and lithium salts addition were investigated for silver co-sintering application. The sintering temperature of dense Ba2Ti3Nb4O18 ceramics with ZBS frit or LiNO3 addition was effectively lowered to 950 or 1,000 °C, respectively. LiNO3 is found to be more efficient than LiF or Li2CO3 to lower the sintering temperature of Ba2Ti3Nb4O18 ceramics. The sintering temperature of 900 °C was obtained for the Ba2Ti3Nb4O18 ceramics with a combination of ZBS frit and LiNO3 addition. The dielectric properties of Ba2Ti3Nb4O18 ceramics with 1 wt.% ZBS and 0.5 wt.% LiNO3 sintered at 900 °C are as follows: εr ~ 37.8, tan δ ~ 0.0003, τε ~ 4.6 ppm/°C.