Improved temperature stability of dielectric properties for BaZr0.134Ti0.866O3 ceramics by hydro-phase method at atmospheric pressure

2017 ◽  
Vol 514 (1) ◽  
pp. 19-24
Author(s):  
Yan Wang ◽  
Kangkang Miao
Keyword(s):  
Dielectric Properties ◽  
Atmospheric Pressure ◽  
Temperature Stability ◽  
Phase Method

Sintering and Dielectric Properties of Sr-Rich Barium Strontium Titanate (BST) Ceramics Fabricated by a Mixed-Phase Method

2013 ◽  
Vol 683 ◽  
pp. 94-97 ◽  
Author(s):  
Li Xin Zhou ◽  
Deng Ren Jin ◽  
Chao Jun Xie ◽  
Jin Rong Cheng
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Temperature Stability ◽  
Mixed Phase ◽  
Phase Method ◽  
Sintering Behavior ◽  
Strontium Content ◽  
Temperature Spectrum ◽  
Remarkable Effect ◽  
Bst Ceramics

Ba 1-x SrxTiO3(x=0.6 to 0.9 interval of 0.1) ceramics were developed by a BT sol-assisted sintering technology with a mixed-phase sintering from the mixture of BT and ST powders synthetized by a solid-state reaction method. The sintering behavior and dielectric properties of the ceramics were investigated. Results show that the sintering activity of the ceramics becomes worse and worse when increased the strontium content, and the sintering condition have a remarkable effect on the density of the ceramics. Dense ceramics were obtained when sintered at 1280°C for 8h with a relatively density of above 94%. The composition had a strong effect on the dielectric properties, while the sintering schedule had a little influence on the dielectric temperature spectrum of the BST ceramics. The Ba 1-x SrxTiO3(x=0.9) ceramic with dielectric constant～335, loss tangent～0.000625 at 1.85 GHz and 20°C, and good temperature stability of dielectric constant above the room temperature is attained.

High temperature lead-free BNT-based ceramics with stable energy storage and dielectric properties

2020 ◽  
Vol 8 (2) ◽  
pp. 683-692 ◽  
Author(s):  
Chaoqiong Zhu ◽  
Ziming Cai ◽  
Bingcheng Luo ◽  
Limin Guo ◽  
Longtu Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Energy Storage ◽  
Dielectric Properties ◽  
Temperature Stability ◽  
Lead Free ◽  
Capacitance Variation

The designed 0.8BNTSZ–0.2NN ceramic demonstrates superb temperature stability with a capacitance variation <±15 from −55 °C to 545 °C.

EFFECT OF THE CALCINATION TEMPERATURE ON THE DIELECTRIC PROPERTIES OF 0.94NA0.5BI0.5TIO3–0.06BATIO3 CERAMICS

2020 ◽  
Vol 27 (10) ◽  
pp. 1950222
Author(s):  
RUIFANG WU ◽  
RUIJIE DUAN ◽  
LINLIN LIANG ◽  
GANG BIAN ◽  
JING WANG
Keyword(s):  
Dielectric Properties ◽  
Calcination Temperature ◽  
High Performance ◽  
Solid Phase ◽  
Clean Energy ◽  
Lead Free ◽  
Phase Method ◽  
Dense Microstructure ◽  
Structure Morphology ◽  
Solid Phase Method

With the miniaturization of electronic products, the portability and the critical need of clean energy for environment have led to the development of lead-free electroceramics. In this work, lead-free dielectric ceramics of 0.94Na[Formula: see text]Bi[Formula: see text]TiO3–0.06BaTiO3 (NBT–0.06BT) are synthesized by wet solid-phase method. The effects of calcination temperature on phase structure, morphology, densification behavior and dielectric properties are investigated. The XRD results indicate that all samples demonstrate typical diffraction peaks of perovskite structure. The SEM and dielectric analytical results show that high-performance dielectric property of NBT–0.06BT ceramic with dense microstructure and appropriate grain size can be achieved when the calcination temperature is appropriate.

Excellent dielectric properties and enhanced temperature stability of CaZrO3-modified BaTiO3 ceramic capacitors

2020 ◽  
Vol 31 (16) ◽  
pp. 13088-13094
Author(s):  
Xiao Han ◽  
Lili Zhao ◽  
Zhi’ang Zhang ◽  
Jingru Zhang ◽  
Quan Jin ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Temperature Stability ◽  
Batio3 Ceramic ◽  
Ceramic Capacitors

SINTERING BEHAVIOR AND DIELECTRIC PROPERTIES OF Ba0.985Bi0.01TiO3-Ba0.9955La0.003TiO3 FINE-POWDERS

2013 ◽  
Vol 27 (12) ◽  
pp. 1350081 ◽  
Author(s):  
JING WANG ◽  
SHENGLIN JIANG ◽  
CHUNZHENG WANG ◽  
HAO YAO ◽  
TINGWEI WANG
Keyword(s):  
Dielectric Properties ◽  
Temperature Stability ◽  
Sintering Behavior ◽  
X Ray Diffraction ◽  
Soft Chemistry ◽  
Fine Powders ◽  
Microstructure Evaluation ◽  
Maximum Dielectric Constant ◽  
Composition Inhomogeneity ◽  
Tan Δ

Ba 0.985 Bi 0.01 TiO 3- Ba 0.9955 La 0.003 TiO 3 fine-powders were synthesized by two-step soft chemistry method. Phase analysis and microstructure evaluation conducted by X-ray diffraction and scanning electron microscopy confirmed the provskite structure of the ceramic grain. Different sintering temperatures were considered to optimize the density and dielectric properties. The maximum dielectric constant decreased first, and then increased before dropping again, reflecting the change of relative density. Samples sintered at 1270°C exhibited the best temperature stability due to composition inhomogeneity and compact properties. The dielectric properties of the sample sintered at 1270°C were: ε = ~8,960, tan δ < 0.28, ΔC/C20° C at -55°C, 110°C and 150°C were -5.2%, 13.8% and -12.8%, respectively.

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).

Effect of PbO-B2O3 Glass Additive on the Dielectric Properties of Ba0.80Sr0.20TiO3 /Pb0.88La0.12Ti0.97O3 Composite Thick Films

2007 ◽  
Vol 280-283 ◽  
pp. 99-102
Author(s):  
Rong Wu ◽  
Pi Yi Du ◽  
Wen Jian Weng ◽  
Gao Rong Han
Keyword(s):  
Dielectric Properties ◽  
Screen Printing ◽  
Glass Phase ◽  
Thick Films ◽  
Temperature Stability ◽  
Relative Dielectric Constant ◽  
Uniform Microstructure ◽  
Glass Additive ◽  
High Infiltration ◽  
B2o3 Glass

BST/PLT composite thick films with various content of PbO-B2O3 glass additive from 5mol% to 25mol% were successfully prepared by screen-printing the paste onto alumina substrates. XRD, SEM and impedance meter were used to analyze the phase structures, morphologies and dielectric properties of the thick films. The results showed that the BST phase has no interaction with PbO-B2O3 glass in the composite thick films at 750 oC. Diffusion between PLT phase and PbO-B2O3 glass phase occurs and the c axis of PLT phase in thick films reduces slightly. The high infiltration between the glass phase and particles densify the composite thick films and the uniform microstructure can be obtained in the thick films with PbO-B2O3 glass additive content of 10mol%. Good temperature stability of dielectric properties is achieved with the 25mol% content of PbO-B2O3 glass additive and the variance of the relative dielectric constant in the temperature range between 0oC and 300oC is 15%.

Sign in / Sign up

Export Citation Format

Share Document