Effect of sintering temperature and micro structural analysis on sol-gel derived silver bismuth titanate ceramics

2017 ◽  
Vol 96 ◽  
pp. 290-295
Author(s):  
S. Supriya
Keyword(s):  
Structural Analysis ◽  
Bismuth Titanate ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Titanate Ceramics

Fabrication and Ferroelectric Properties of Ba-Doped Strontium Bismuth Titanate Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 163-166
Author(s):  
Dan Xie ◽  
Wei Pan ◽  
Zhi Min Dang ◽  
Tian Ling Ren
Keyword(s):  
Electron Microscopy ◽  
Remanent Polarization ◽  
Bismuth Titanate ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Molar Ratio ◽  
Sol Gel Process ◽  
Titanate Ceramics ◽  
Coercive Electric Field

In the paper, the microstructure and properties of Sr1-xBaxBi4Ti4O15 (SBBT) ceramics with different Ba contents were investigated. SBBT ceramics were fabricated by means of the method combining Sol-Gel process and ordinary firing. The morphology will change when Ba2+ is doped in SrBi4Ti4O15 (SBTi), which will lead to the change of structure and ferroelectric properties. The microstructure of SBTi and BaBi4Ti4O15 (BBTi) ceramics were characterized by scan electron microscopy (SEM). With the increase of Ba2+ doping contents, the sintering temperature of SBBT ceramics decreases, 1120°C for SBTi and 1060°C for BBTi. BBTi ceramics contain more and larger plate-like grains than that in SBTi, the diameter of the grains in BBTi is about 8~10 µm, the thickness is about 2.5 µm. With the increase of Ba2+ doping contents, remanent polarization (Pr) and coercive electric-field (Ec) increase first and then decrease. At the molar ratio of Sr:Ba=0.5:0.5, SBBT ceramics exhibited the highest Pr and Ec.

High-Speed Synthesis and Electric Properties of Magnesium Doped Lead Titanate Ceramics

2007 ◽  
Vol 121-123 ◽  
pp. 149-152
Author(s):  
Liang Sheng Qiang ◽  
Dong Yan Tang ◽  
Xing Hong Zhang ◽  
L. Jin
Keyword(s):  
Lead Titanate ◽  
High Speed ◽  
Sintering Temperature ◽  
Water Solution ◽  
Sol Gel ◽  
Electric Properties ◽  
Synthesis Process ◽  
Pure Lead ◽  
Alcohol Water ◽  
Titanate Ceramics

By adding methyl alcohol/water solution with certain concentration into sol to hydrolysis directly and sintering the fresh sol directly, lead titanate(PbTiO3) ceramics doped with magnesium are prepared by using magnesium acetate as doper to prohibit the disadvantages contained in conventional sol-gel method, such as low hydrolytic rate, high sintering temperature, long preparation period. The changes of structure, microstructure, synthesis process and electric properties of modified ceramics are studied in detail. The sizes and morphology of high purely and high density magnesium doped lead titanate nanocrystals thus obtained are observed by TEM photographs and the structures and affection of sintering temperature of to lattice constant and sizes of nanocrystals are detected by XRD. Electric properties detection results show that doped lead titanate ceramics exhibite excellent dielectric, ferroelectric and pyroelectric properties compare with pure lead titanate.

Synthesis of lanthanum-doped lead titanate ceramics using a modified sol–gel route and their structural analysis

2021 ◽  
Vol 585 (1) ◽  
pp. 88-96
Author(s):  
Avanish Kumar ◽  
Anju Dixit ◽  
Swati Chopra ◽  
P. S. Dobal
Keyword(s):  
Structural Analysis ◽  
Lead Titanate ◽  
Sol Gel ◽  
Titanate Ceramics

scholarly journals Sintering characteristics of La/Nd doped Bi4Ti3O12 bismuth titanate ceramics

2015 ◽  
Vol 47 (2) ◽  
pp. 175-186 ◽  
Author(s):  
Aminul Islam ◽  
M.A. Gafur ◽  
Saidul Islam
Keyword(s):  
Bismuth Titanate ◽  
Sintering Temperature ◽  
Solid State Reaction Method ◽  
New Materials ◽  
Reaction Method ◽  
Different Temperatures ◽  
Sintering Characteristics ◽  
Titanate Ceramics ◽  
La Doped ◽  
Co Doped

A good understanding about the properties of La/Nd doped Bismuth Titanate (BIT) ceramics at high temperature is very important as the new materials being developed based on the BIT. Pure BIT, La doped (BLT), Nd doped (BNT) and La and Nd co-doped BIT (BLNT) powders were synthesized by solid state reaction method. Prepared powders were calcined at different temperatures and structural properties measured by XRD. For pure BIT better crystal quality was obtained at 750 0C and for both BLT and BNT better result obtained at 800 0C. Calcined powders were formed into pellets and sintered at different temperatures and its dielectric properties were characterized. Optimum sintering temperature for both BLT and BNT showed was 850 0C and La and Nd co-doped bismuth titanate (BLNT) revealed optimum sintering temperature of 950 0C. Therefore, optimum sintering temperature of bismuth titanate was increased due to La and Nd doping.

scholarly journals Role of sintering temperature dependent crystallization of bioactive glasses on erythrocyte and cytocompatibility

2019 ◽  
Vol 13 (1) ◽  
pp. 12-23 ◽  
Author(s):  
Shivalingam Chitra ◽  
Purushothaman Bargavi ◽  
Dhinasekaran Durgalakshmi ◽  
Padmanaban Rajashree ◽  
Subramanian Balakumar
Keyword(s):  
Mechanical Property ◽  
Structural Analysis ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Secondary Phase ◽  
Phase Changes ◽  
Temperature Dependent ◽  
Bioactive Glasses ◽  
Secondary Phase Formation

Bioglass (BG) was prepared by sol-gel method and the role of sintering temperatures (600, 700 and 800?C) on crystalline phase changes, bioactivity, erythrocyte andMG-63 cell line compatibility was investigated. Increase in sintering temperature from 600 to 800?C led to the secondary phase formation that was confirmed through structural analysis. Micrographics revealed the formation of nanorods (700?C) and nanoflake like (800?C) morphologies. Biocompatibility assay showed that, BG sintered at 600?C had optimal biocompatibility while better mechanical property was noted at 700?C. Altogether, the study demonstrated that increasing the sintering temperature will result in increased crystallinity which in turn resulted in the optimal biomineralization but decreased the biocompatibility. Hence, we demonstrated the importance of temperature during the processing of BG for various applications, as it affects many properties including bioactivity and compatibility.

scholarly journals Synthesis and characterization of Ce and La modified bismuth titanate

2009 ◽  
Vol 3 (1-2) ◽  
pp. 88-95 ◽  
Author(s):  
Nikolina Pavlovic ◽  
Dejan Kancko ◽  
Mészáros Szécsényi ◽  
Vladimir Srdic
Keyword(s):  
Bismuth Titanate ◽  
Sol Gel ◽  
Pyrochlore Phase ◽  
Grain Morphology ◽  
The Other ◽  
Synthesis And Characterization ◽  
Second Phase ◽  
Titanate Ceramics ◽  
Different Content

Bismuth titanate based nanopowders with the different content of La or Ce were synthesized by the modified sol-gel method. After calcination at 600?C, in addition to Aurivillius layered structure, a small quantity of cubic pyrochlore phase was detected in the La modified powders, while this second phase was much more pronounced in the Ce substituted powders. In fact, as the powder with the highest amount of Ce (Bi3CeTi3O12) has the pure pyrochlore phase it seems that the presence of Ce stabilizes the formation of this phase. This different influence of cerium and lanthanum could be explained by the incorporation of their ions on the different sites in the titanate structure. Bismuth titanate based ceramics, sintered at 1050?C/2h, had densities above 93% of theoretical density and characteristic plate-like grain morphology. Small quantity of cubic pyrochlore phase was detected only in the Ce modified bismuth titanate ceramics. On the other hand, lanthanum addition caused formation of smaller grain size with pronounced plate-like morphology. .

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

2015 ◽  
Vol 740 ◽  
pp. 3-6
Author(s):  
Guo Yuan Cheng ◽  
Xing Hua Fu ◽  
Xin Jin ◽  
Wen Hong Tao ◽  
Yu Qin Qiang
Keyword(s):  
Comparative Analysis ◽  
Citric Acid ◽  
Dielectric Loss ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Gel Method ◽  
Sol Gel Method ◽  
Metal Chelator

KNN-BF piezoelectric ceramics synthesized by sol-gel method in this experiment. By controlling bismuth and iron content in the system to study effects of them. We selected citric acid as metal chelator and ethylene glycol as esterification agent. PH maintained 5-6 during preparation of the sol. Sintering temperature of ceramic selected 1100°C. Preparation ceramics under these conditions and comparative analysis, the structure of ceramics is single perovskite and shap of crystals are square block. With the increase of x, properties of ceramics firstly increases and then decreases: d33, εr, Qm, Kpreaching the maximum, values of them were 136pC/N, 630(f =1KHz), 212, 0.41 respectively; dielectric loss to minimum is 0.07(f =1KHz); at this point, ceramics had best performance.

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