Decreasing sintering temperature for BCZT lead-free ceramics prepared via hydrothermal route

2017 ◽  
Vol 10 (04) ◽  
pp. 1750046 ◽  
Author(s):  
Xiaoyu Lu ◽  
Bijun Fang ◽  
Shuai Zhang ◽  
Ningyi Yuan ◽  
Jianning Ding ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
Electric Energy ◽  
Relaxor Ferroelectrics ◽  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Hydrothermal Route ◽  
Pure Perovskite Structure ◽  
Lead Free Ceramics ◽  
Microstructure Morphology ◽  
Low Sintering Temperature

(Ba[Formula: see text]Ca[Formula: see text])(Zr[Formula: see text]Ti[Formula: see text])O3 (BCZT) lead-free ferroelectric ceramics were prepared at low sintering temperature via a hydrothermal route. The hydrothermal-synthesized BCZT precursor powder presents phase-pure perovskite structure and rather homogenous particles with dozens nanometers, which provides high sintering activity. Pure perovskite BCZT ceramics are synthesized at rather low sintering temperature accompanied by rather uniform microstructure morphology and high relative density. Dielectric peaks of the BCZT ceramics are rather broad, and their dielectric response behavior combines the characteristics of both the normal and relaxor ferroelectrics. The BCZT ceramics exhibit excellent ferroelectricity and promising electric energy density, which can be enhanced further with increasing electric field.

Properties of lead-free BZT–BCT ceramics synthesized using nanostructured ZnO as a sintering aid

2015 ◽  
Vol 29 (32) ◽  
pp. 1550231 ◽  
Author(s):  
Dang Anh Tuan ◽  
Vo Thanh Tung ◽  
Truong Van Chuong ◽  
Le Van Hong
Keyword(s):  
Zno Nanoparticles ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Lead Free ◽  
Dielectric Measurements ◽  
High Quality ◽  
Sintering Aid ◽  
Lead Free Ceramics ◽  
Low Sintering Temperature ◽  
Type Lattice

This article studies the microstructure and piezoelectric properties of low sintering temperature lead-free ceramics [Formula: see text]-doped with ZnO nanoparticles (noted as 0.48BZT-y, y is content of ZnO in wt%, y =0.00, 0.05, 0.10, 0.15, 0.20 and 0.25). The obtained results of Raman scattering and dielectric measurements have confirmed that [Formula: see text] has occupied B site, to cause a deformation in the ABO3-type lattice of the 0.48BZT-y compounds. The 0.15 wt% ZnO-doped ceramic sintered at 1350[Formula: see text]C exhibited excellent piezoelectric parameters: [Formula: see text], [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]. The obtained results indicate that the high-quality lead-free BZT–BCT ceramic could be successfully synthesized at a low sintering temperature of 1350[Formula: see text]C by doping an appropriated amount of ZnO.

Effect of Sintering Temperature on Microstructure and Electrical Properties of (1-x)BCZT-xBY Lead-Free Ceramics

2014 ◽  
Vol 900 ◽  
pp. 119-122 ◽  
Author(s):  
Xiao Qin Huang ◽  
Qi Bin Liu ◽  
Cheng Zhang
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Solid State ◽  
Electrical Properties ◽  
Sintering Temperature ◽  
Lead Free ◽  
Pure Perovskite Structure ◽  
Lead Free Ceramics ◽  
Solid State Sintering ◽  
Sintering Method

Lead-free 0.996(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3-0.004BiYO3 [BCZT-BY] ceramics were prepared by the conventional solid-state sintering method. By means of XRD, SEM, and quasi-static d33 meter etc., the effect of sintering temperature on the microstructure, piezoelectric and dielectric properties of BCZT-BY ceramics were investigated. All the ceramics possess a pure perovskite structure, indicating that Bi3+ and Y3+ are incorporated into Ba0.85Ca0.15Ti0.9Zr0.1O3 lattices to form a solid solution. The results show that the ceramics sintered at 1420°C exhibit the optimum electrical properties: d33 = 130 pC/N, kp = 18.2 %, εr = 4225, and tan δ = 1.95%, respectively.

Low sintering temperature and high piezoelectric properties of Li-doped (Ba,Ca)(Ti,Zr)O3 lead-free ceramics

2015 ◽  
Vol 632 ◽  
pp. 103-109 ◽  
Author(s):  
Xiaoming Chen ◽  
Xuezheng Ruan ◽  
Kunyun Zhao ◽  
Xueqing He ◽  
Jiangtao Zeng ◽  
...  
Keyword(s):  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Lead Free ◽  
Lead Free Ceramics ◽  
Low Sintering Temperature

Low Temperature Sintering of Lead-Free BaTiO3-Based X9R Ceramics with Bi2O3 Dopant and Assisted by LiF-CaF2 Flux Agent

2014 ◽  
Vol 906 ◽  
pp. 31-36 ◽  
Author(s):  
Bao Lin Zhang ◽  
Bin Bin Zhang ◽  
Ning Ning Wang ◽  
Jun Zhang
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Low Temperature ◽  
Sintering Temperature ◽  
Temperature Stability ◽  
Lead Free ◽  
Low Temperature Sintering ◽  
Pure Silver ◽  
Flux Agent ◽  
Low Sintering Temperature

The sintering temperature of BaTiO3powder was reduced to 950°C due to the Bi2O3-LiF-CaF2addition.Excellent densification was achieved after sintering at 950°C for 10h. The low sintering temperature of newly developed capacitor materials allows a co-firing with pure silver electrodes.The dielectric constant and the temperature stability of the dielectric constant satisfied the X9R standard, which dielectric properties of were ε25°C1115, ΔC/C25°C±12% (55~200°C), tanδ1.5% (25°C).

scholarly journals Structural, microstructural and dielectric characterizations of (Bi0.5Na0.5)TiO3based lead-free ferroelectric ceramics

2021 ◽  
pp. 2140006
Author(s):  
B. R. Moya ◽  
A. C. Silva ◽  
A. Peláiz-Barranco ◽  
J. D. S. Guerra
Keyword(s):  
Lead Free ◽  
Ferroelectric Ceramics ◽  
Reaction Sintering ◽  
X Ray Diffraction ◽  
Conventional Solid State Reaction ◽  
Porosity Level ◽  
X Ray ◽  
Ceramic Samples ◽  
Lead Free Ceramics ◽  
Sintering Method

(1–[Formula: see text]Bi[Formula: see text]Na[Formula: see text]TiO3–[Formula: see text]BaTiO3 lead-free ceramics have been obtained from the conventional solid-state reaction sintering method. The structural properties were investigated from X-ray diffraction and Raman spectroscopy techniques. Results revealed well-crystallized ceramic samples with perovskite structure. Microstructural properties, obtained from scanning electron microscopy measurements, have shown high density with very low porosity level. The dielectric response, analyzed as a function of the temperature and several frequencies, showed very broad peaks with a strong frequency dependence of the temperature for the maximum dielectric permittivity for the modified system. Results were analyzed considering the influence of the BaTiO3 content on the studied physical properties.

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