The effect of sintering temperature on the microstructure and functional properties of BCZT-xCeO2 lead free ceramics

被引：27
作者：
Bijalwan, Vijay [1 ]
Hughes, Hana [1 ,2 ]
Pooladvand, Hojat [2 ]
Tofel, Pavel [1 ,3 ]
Nan, Bo [1 ]
Holcman, Vladimir [3 ]
Bai, Yang [1 ,2 ]
Button, Tim W. [1 ,2 ]
机构：
[1] CEITEC Cent European Inst Technol BUT, Purkynova 123, Brno 61200, Czech Republic
[2] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England
[3] Brno Univ Technol, Dept Phys, Tech 10, Brno 61600, Czech Republic
来源：
MATERIALS RESEARCH BULLETIN | 2019年 / 114卷
关键词：
Lead free ceramics; Sintering temperature; Grain size; XRD; PIEZOELECTRIC PROPERTIES; GRAIN-SIZE; PHASE-TRANSITION; ELECTRICAL-PROPERTIES; STRAINS;
D O I：
10.1016/j.materresbull.2019.02.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report (Ba0.85Ca0.15)(Zr0.1Ti0.9)O-3 + x wt.% CeO2 lead free piezoelectric ceramics fabricated by conventional solid-state reaction routes. The phase structure, microstructure and functional properties have been systematically investigated. The morphotropic phase boundary was investigated in the range of x = 0 - 0.1%. A comparative study of their functional properties as a function of sintering temperature is presented. The study shows the important role of sintering temperature and grain size on the functional properties of these ceramics. Enhanced properties are observed for x = 0.07% at a sintering temperature 200 degrees C lower than for pure BCZT, in which, d(33) = 507 +/- 20 pC/N, k(p) = 51.8%, epsilon(r) = 4091 +/- 100, tan delta = 0.02, P-r = 16.32 mu m/cm(2), E-C = 2.13 kV/cm and T-C = 104.6 degrees C indicating that these ceramics are promising lead-free substitutes for the widely used lead-based ceramics.
引用
收藏
页码：121 / 129
页数：9
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