TY - GEN
T1 - Low-temperature sintering of ZnO and B2O3 Co-doped (K0.5Na0.5)NbO3 lead-free piezoelectric ceramics
AU - Huang, Rongxia
AU - Zhao, Yuzhen
AU - Zhao, Yongjie
AU - Liu, Rongzheng
AU - Zhou, Heping
PY - 2011
Y1 - 2011
N2 - Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B2O3 can decrease the sintering temperature of K0.5Na0.5NbO 3 ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B 2O3 induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B2O3. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k p= 40.7%, piezoelectric constant d33=117pC/N, dielectric constant ε33T/ε0=318.6, and loss tangent tanδ=0.034.
AB - Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by conventional ceramics process. The co-doping of ZnO and B2O3 can decrease the sintering temperature of K0.5Na0.5NbO 3 ceramics to 1000°C, and the samples show high relative density around 96%. X-ray diffraction (XRD) reveals that Co-doping of ZnO and B 2O3 induces lattice distortion. Liquid phase is observed by scanning electron microscopy (SEM), which is resulted from the addition of ZnO and B2O3. The ceramics show better piezoelectric and dielectric properties with planar electromechanical coupling factor k p= 40.7%, piezoelectric constant d33=117pC/N, dielectric constant ε33T/ε0=318.6, and loss tangent tanδ=0.034.
KW - Co-doped
KW - KNN
KW - Lead free piezoelectric ceramics
KW - Low temperature sintering
UR - http://www.scopus.com/inward/record.url?scp=79960021839&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.687.315
DO - 10.4028/www.scientific.net/MSF.687.315
M3 - Conference contribution
AN - SCOPUS:79960021839
SN - 9783037851692
T3 - Materials Science Forum
SP - 315
EP - 320
BT - Functional and Electronic Materials
PB - Trans Tech Publications Ltd.
ER -