Influence of Sintering Temperature on Electrical Properties of Modified-PZT Piezoelectric Ceramics

2016 ◽  
Vol 872 ◽  
pp. 97-102
Author(s):  
Pharatree Jaita ◽  
Ratabongkot Sanjoom ◽  
Chatchai Kruea-In ◽  
Tawee Tunkasiri ◽  
Gobwute Rujijanagul
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Secondary Phases ◽  
Xrd Pattern ◽  
Mechanical And Electrical Properties ◽  
Low Field ◽  
Higher Temperature ◽  
Dominant Phase ◽  
Ferroelectric And Piezoelectric Properties

In this research, the effects of sintering temperature on phase structure, densification, microstructure, mechanical and electrical properties of modified-PZT ceramics were investigated. All ceramics were prepared by a conventional mixed oxide amend sintered at various temperatures from 1150 - 1250°C. XRD pattern indicated that completely solid solution occurred for all samples and the ceramics exhibited a single perovskite without any secondary phases. At lower sintering temperature, the dominant phase was rhombohedral while tetragonal phase became dominant at higher temperature. Grain size tended to increase with increasing sintering temperature. The dielectric, ferroelectric and piezoelectric properties were also increased with increasing sintering temperature. In addition, the highest low field d33 of 620 pC/N of was observed for the 1250°C sample.

Influence of Sintering Temperature on Structure and Electrical Properties of Modified-BNKT Lead-Free Piezoelectric Ceramics

2018 ◽  
Vol 777 ◽  
pp. 55-59 ◽  
Author(s):  
Pharatree Jaita ◽  
Supalak Manotham ◽  
Narumon Lertcumfu
Keyword(s):  
Grain Size ◽  
Electrical Properties ◽  
Mixed Oxide ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Maximum Density ◽  
Lead Free ◽  
Secondary Phases ◽  
Xrd Pattern ◽  
Conventional Sintering

In this research, the effects of sintering temperature on phase structure, densification, microstructure, and electrical properties of modified-BNKT ceramics were investigated. Conventional sintering of lead-free 0.97Bi0.5(Na0.80K0.20)0.5TiO3-0.03(Ba0.70Sr0.30)O3or 0.97BNKT-0.03BSrT ceramic was investigated to clarify the optimal sintering temperature for densification and electrical properties. All ceramics were prepared by a conventional mixed oxide and sintered at various temperatures from 1100 to 1150°C. XRD pattern indicated all ceramics exhibited a single perovskite without any secondary phases. The maximum density of 5.80 g/cm3with relative density of 99.32% were observed for the ceramic sintered at 1125°C. Grain size tended to increase with increasing the sintering temperature. The good dielectric (Td= 121 °C, Tm= 320 °C and e¢max= 4982) and ferroelectric properties (Pr= 16.66 µC/cm2, Ec= 17.85 kV/cm and Rsq= 0.74) were obtained for the ceramic sintered at optimum sintering temperature of 1125°C.

Effects of Different Sintering Temperature on the Microstructure and Piezoelectric Properties of Pb(Nb2/3Zn1/3)x(Zr52Ti48)1-XO3 Ceramics

2014 ◽  
Vol 1061-1062 ◽  
pp. 83-86
Author(s):  
Hong Wu ◽  
De Yi Zheng
Keyword(s):  
Electrical Properties ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Electromechanical Coupling Coefficient ◽  
X Ray Diffraction ◽  
X Ray ◽  
Ceramic Samples ◽  
Xrd Patterns ◽  
The Relationship

In this paper, the effects of different sintering temperature on the microstructure and piezoelectric properties of Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3(PNZZT) ceramic samples were investigated. The Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3 ceramics materials was prepared by a conventional mixed oxide method. In the period of the experiment, the relationship between crystallographic phase and microstructure were analyzed by X-ray diffraction(XRD) and scanning electron microscopy(SEM) respectively. The XRD patterns shows that all of the ceramic samples are with a tetragonal perovskite structure. Along with sintering temperature increased and the x is 0.03, the grain size gradually become big. Through this experiment, it has been found that when the x is 0.03 and sintered at 1130°C for 2 h, the grains grow well, the grain-boundary intersection of the sample combined well and the porosity of the ceramics decreased, an excellent comprehensive electrical properties of the Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3 samples can be obtained. Its best electrical properties are as follows: dielectric constant (ε) is 1105, dielectric loss(tg) is 0.017, electromechanical coupling coefficient (Kp) is 0.287, piezoelectric constant(d33) is 150PC/N

Effect of Sintering Temperatures and Nd2O3 Dopant on the Microstructure, Physical and Electrical Properties of KNNT Ceramics

2020 ◽  
Vol 398 ◽  
pp. 67-75
Author(s):  
Hamza M. Kamal ◽  
Mohammed J. Kadhim
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Neodymium Oxide ◽  
Remarkable Improvement ◽  
Microstructure Density ◽  
Dielectric And Piezoelectric Properties ◽  
Piezoelectric Characteristics

The microstructure, physical, dielectric and the piezoelectric characteristics of the (K0.5Na0.5) (Nb0.9Ta0.1) O3 (KNNT) ceramics as a function of the sintering temperature and Nd2O3 dopant were inspected in this work. It was found that the sintering temperature has a significant impact on the above-mentioned properties. In the same context, the addition of HYPERLINK "https://pubchem.ncbi.nlm.nih.gov/compound/Neodymium_oxide" neodymium oxide led to remarkable improvement in the microstructure, density, dielectric and piezoelectric properties of KNNT ceramics when compared to undoped ceramics.

Rietveld Quantitative Phase Analysis of Non-Stoichiometric Cordierite Synthesised from Mainly Talc and Kaolin: Effect of Sintering Temperature

2010 ◽  
Vol 173 ◽  
pp. 190-195
Author(s):  
Johar Banjuraizah ◽  
Mohamad Hasmaliza ◽  
Zainal Arifin Ahmad
Keyword(s):  
Sintering Temperature ◽  
Raw Materials ◽  
Rietveld Method ◽  
Quantitative Phase Analysis ◽  
Secondary Phases ◽  
Grinding Media ◽  
Heat Treated ◽  
Higher Temperature ◽  
New Phase ◽  
Rietveld Quantitative Phase Analysis

Indialite or α-cordierite was synthesized by glass crystallization method using mainly talc and kaolin and with small amount of MgO, Al2O3, SiO2 to compensate the chemical formulation of non-stoihiometric compositions of cordierite. (3MgO.1.5Al2O3.5SiO2). B2O3, P2O5 and CaO was also added to decrease the melting and sintering temperature of cordierite. The glasses were pelletized and sintered from 850oC up to 1050oC. Phase compositions of both heat treated glass was quantified by X-ray powder diffraction data by the Rietveld method using TOPAS Ver 3 software. Result shows that about 60wt% of α cordierite has successfully crystallized at 850oC. Beside secondary phases (forsterite) which come from initial raw materials, phases from grinding media were also presents in the sample. The contamination was considered high since it has reacted with existence phases to form a new phase at higher temperature. Without any contamination from grinding it was expected to obtain more than 90wt% α cordierite using the same composition.

Physical, Mechanical and Electrical Properties of W-20 wt.% Cu Composite Produced by Liquid Phase Sintering Process

2014 ◽  
Vol 879 ◽  
pp. 21-26
Author(s):  
Fauzi Ismail ◽  
Mohd Asri Selamat ◽  
Norhamidi Muhamad ◽  
Abu Bakar Sulong ◽  
Nurzirah Abdul Majid
Keyword(s):  
Particle Size ◽  
Liquid Phase ◽  
Electrical Properties ◽  
Microstructure Evolution ◽  
Sintering Temperature ◽  
Cold Isostatic Pressing ◽  
Liquid Phase Sintering ◽  
Sintering Process ◽  
Composite Powders ◽  
Mechanical And Electrical Properties

In this study, the effect of sintering temperature on the properties of tungsten-copper (W-Cu) composite produced by liquid phase sintering (LPS) process has been investigated. W-20 wt.% Cu composite powders with particle size less than 1 μm was prepared by cold compaction and followed by cold isostatic pressing. The green specimens were then sintered under nitrogen based atmosphere in the temperature range of 1100°C to 1300°C. The sintering studies were conducted to determine the extent of densification and corresponding to microstructure changes. In addition, the properties of the sintered specimens such as physical appearance, microstructure evolution, mechanical and electrical properties were presented and discussed.

scholarly journals PLZT Microfibers Technology Optimization

2016 ◽  
Vol 61 (3) ◽  
pp. 1471-1476
Author(s):  
L. Kozielski ◽  
M. Adamczyk ◽  
K. Feliksik ◽  
D. Bochenek ◽  
F. Clemens
Keyword(s):  
Spontaneous Polarization ◽  
Laser Excitation ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Waste Heat ◽  
Pyroelectric Coefficient ◽  
Ferroelectric Materials ◽  
Quick Response ◽  
New Generation ◽  
Ferroelectric And Piezoelectric Properties

Abstract Electrocaloric (EC) structures for a new generation of cooling or heating elements utilize the temperature dependence of spontaneous polarization in some ferroelectric materials to convert waste heat into electricity and vice versa. A (Pb0.93La0.07) (Zr0.65Ti0.35)O3 material, have the largest recorded pyroelectric coefficient. An effective predicted form for such applications is fiber, due to small heat capacitance and quick response time, even for nano second laser excitation. Consequently, the presented work provides a description of the optimization of structural, ferroelectric and piezoelectric properties of obtained fibers, finally concluding on necessity of sintering temperature reduction in 100°C in contrast to bulk form to effectively prevent its destruction.

Study on Ferroelectric and Dielectric Properties of Zr-Doped Sr2Bi4Ti5O18 Ceramics

2010 ◽  
Vol 105-106 ◽  
pp. 248-251 ◽  
Author(s):  
Ji Gong Hao ◽  
Zhi Jun Xu ◽  
Rui Qing Chu ◽  
Yan Jie Zhang ◽  
Qian Chen ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Electrical Properties ◽  
Single Phase ◽  
Piezoelectric Properties ◽  
Ferroelectric Ceramics ◽  
Sem Images ◽  
Ceramic Samples ◽  
Xrd Patterns ◽  
Curie Temperature Tc ◽  
Ferroelectric And Piezoelectric Properties

Zr-doped Sr2Bi4Ti5O18 (SBTi) bismuth layer-structured ferroelectric ceramics were prepared and studied. XRD patterns revealed that all the ceramic samples were single phase compounds. SEM images showed that dense microstructures with uniform gain size were obtained in all samples. The effects of Zr4+ doping on the dielectric, ferroelectric and piezoelectric properties of SBTi ceramics were also investigated. It was found that Zr4+ dopant gradually decreased the Curie temperature (Tc), enhanced the remnant polarization (2Pr) and decreased the coercive field (Ec) of SBTi ceramics. Furthermore, the piezoelectric properties of the SBTi ceramics were improved by enlarging the content of Zr. The SBTi ceramics with 4 mol% of Zr4+ dopant exhibited good electrical properties: d33 = 21 pC/N, 2Pr = 14.3 μC/cm2, Tc = 251°C, εr = 376, tanδ = 1.8%.

scholarly journals Evaluate the factors affecting the calcined temperatures of the BZT-BCT ceramics

2020 ◽  
Vol 129 (1D) ◽  
Author(s):  
Nguyen Thi Tuyet Trinh ◽  
Bui Thi Ngoc Anh ◽  
Le Tran Uyen Tu ◽  
Dung Thi Hoai Trang ◽  
Le Thi Lien Phuong ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Ceramic ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Ceramic Technology ◽  
Lead Free ◽  
Sintering Aid ◽  
Factors Affecting

Lead-free piezoelectric ceramic 0.48Ba[Zr0.2Ti0.8]O3 - 0.52[Ba0.7Ca0.3]TiO3 (BZT-BCT) with a nanostructure was manufactured by traditional ceramic technology. Nanostructure and the sintering aid reduce the calcinating temperature as well as the sintering temperature and some electrical properties of BZT-BCT ceramics systems are researched. The results show that they can reduce the calcinating and sintering temperatures of ceramics systems from 1250 0C and 1450 0C to 1170 0C and 1350 0C. Moreover, the piezoelectric properties of the 0.48BZT - 0.52BCT at the optimal calcinating and sintering temperature will be discussed in detail.

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