TY - JOUR
T1 - Effects of ZnO-B2O3-SiO2 addition on the microwave dielectric properties of Ba(Nd1-xBix) 2Ti4O12 ceramics
AU - Hsiang, Hsing I.
AU - Hsi, Chi Shiung
AU - Hsu, Xiao Ci
PY - 2012/1/1
Y1 - 2012/1/1
N2 - ZnO- B2O3 -SiO2 glass effects on both the sintering behavior and microwave dielectric properties of BaO. (Nd 1-xBix)2O3. 4TiO2 (BNBT) ceramics were investigated in developing low-temperature-fired dielectric ceramics for microwave devices. Glass wetting characteristics on the BNBT surface, X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and a dilatometer were used to examine the ZnO-B2O3-SiO2 glass effect on BNBT densification and the chemical reaction between the glass and BNBT. The results indicate that ZnO-B2O3-SiO2 glass can be used as a sintering aid to reduce the densification temperature of BNBT from 1300°C to 900°C. The substitution of Bi for Nd in BNBT affected the densification behavior, microstructure, and dielectric properties. BNBT ceramics with 8wt% ZnO- B2O3 -SiO2 glass sintered at 900°C show a relative density of 98%, a high dielectric constant of 61.2, a quality factor (Qf) of 7924, and a temperature coefficient of resonant frequency of 9ppm/°C.
AB - ZnO- B2O3 -SiO2 glass effects on both the sintering behavior and microwave dielectric properties of BaO. (Nd 1-xBix)2O3. 4TiO2 (BNBT) ceramics were investigated in developing low-temperature-fired dielectric ceramics for microwave devices. Glass wetting characteristics on the BNBT surface, X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and a dilatometer were used to examine the ZnO-B2O3-SiO2 glass effect on BNBT densification and the chemical reaction between the glass and BNBT. The results indicate that ZnO-B2O3-SiO2 glass can be used as a sintering aid to reduce the densification temperature of BNBT from 1300°C to 900°C. The substitution of Bi for Nd in BNBT affected the densification behavior, microstructure, and dielectric properties. BNBT ceramics with 8wt% ZnO- B2O3 -SiO2 glass sintered at 900°C show a relative density of 98%, a high dielectric constant of 61.2, a quality factor (Qf) of 7924, and a temperature coefficient of resonant frequency of 9ppm/°C.
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U2 - 10.1080/00150193.2012.740265
DO - 10.1080/00150193.2012.740265
M3 - Article
AN - SCOPUS:84871751431
SN - 0015-0193
VL - 435
SP - 1
EP - 12
JO - Ferroelectrics
JF - Ferroelectrics
IS - 1
ER -