TY - JOUR
T1 - Microstructure and piezoelectric properties of Ba(Ti0.8Zr0.2)O3- (Ba0.7Ca0.3) TiO3 lead-free ceramics
AU - Liu, Liangliang
AU - Gao, Feng
AU - Xu, Bei
AU - Hu, Guoxin
AU - Wang, Tao
AU - Liu, Jiangnan
PY - 2011/10
Y1 - 2011/10
N2 - Lead-free piezoelectric Ba(Ti0.8Zr0.2)O3- (Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics with high piezoelectric coefficient were synthesized by the conventional solid state reaction method. The effect of the contents of BCT on the system microstructure, piezoelectric and dielectric property has been investigated. The results showed that the main phase of BZT-xBCT ceramics was perovskite phase when x was 0.45 to 0.60, and a small amount of second phase (CaTiO3) was detected when x>0.50.BZT-xBCT ceramics with x=0.50 had an optimized piezoelectric characterization, its dielectric constant, piezoelectric constant d33, electromechanical coupling factor kp, mechanical quality factor Qm and the frequency coefficient Np were 2 900, 385 pC/N, 0.456, 124 and 2 740 Hz·m respectively. Theese results indicate that the BZT-xBCT with the compositions near the morphotropic phase boundary (MPB) is a hopeful candidate material to replace the lead-based piezoelectric materials.
AB - Lead-free piezoelectric Ba(Ti0.8Zr0.2)O3- (Ba0.7Ca0.3)TiO3 (BZT-xBCT) ceramics with high piezoelectric coefficient were synthesized by the conventional solid state reaction method. The effect of the contents of BCT on the system microstructure, piezoelectric and dielectric property has been investigated. The results showed that the main phase of BZT-xBCT ceramics was perovskite phase when x was 0.45 to 0.60, and a small amount of second phase (CaTiO3) was detected when x>0.50.BZT-xBCT ceramics with x=0.50 had an optimized piezoelectric characterization, its dielectric constant, piezoelectric constant d33, electromechanical coupling factor kp, mechanical quality factor Qm and the frequency coefficient Np were 2 900, 385 pC/N, 0.456, 124 and 2 740 Hz·m respectively. Theese results indicate that the BZT-xBCT with the compositions near the morphotropic phase boundary (MPB) is a hopeful candidate material to replace the lead-based piezoelectric materials.
KW - Conventional solid state reaction
KW - Lead-free ceramics
KW - Microstructure
KW - Piezoelectricity
UR - http://www.scopus.com/inward/record.url?scp=80555155785&partnerID=8YFLogxK
M3 - 文章
AN - SCOPUS:80555155785
SN - 1004-2474
VL - 33
SP - 791-795+810
JO - Yadian Yu Shengguang/Piezoelectrics and Acoustooptics
JF - Yadian Yu Shengguang/Piezoelectrics and Acoustooptics
IS - 5
ER -