Effect of Sintering Parameter on Ferroelectric Properties in PZT Based Ceramics

2015 ◽  
Vol 804 ◽  
pp. 34-37
Author(s):  
Tanabat Promjun ◽  
Yongyut Manjit ◽  
Saksit Sukprasong ◽  
Athipong Ngamjarurojana
Keyword(s):  
Mixed Oxide ◽  
Perovskite Structure ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Pyrochlore Phase ◽  
Soaking Time ◽  
Sintering Conditions ◽  
Xrd Patterns ◽  
Sintering Condition

This research was conducted to improve the ferroelectric properties of PZT based ceramics by studying the effect of sintering conditions in terms of temperature and soaking time (time of sintering) on the ferroelectric properties of ceramics in the 0.8Pb (Zr1/2Ti1/2)O3-0.2Pb (Zn1/3Nb2/3)O3 system prepared by vibro-milling mixed-oxide method. The XRD patterns of specimens showed perovskite structure for all compositions. The pyrochlore phase was not observed in this system. The sintering temperature and soaking time affects the ferroelectric properties of ceramics by the optimum sintering condition for 0.8PZT-0.2PZN ceramic is sintered at 1250°C for 2h.

Influence of Sintering Temperature and Sintering Aid on Electrical Properties of (K, Na)NbO3-LT Ceramics

2008 ◽  
Vol 368-372 ◽  
pp. 1890-1892
Author(s):  
Ye Jing Dai ◽  
Xiao Wen Zhang
Keyword(s):  
Electrical Properties ◽  
Piezoelectric Property ◽  
Mixed Oxide ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Sintering Aid ◽  
Temperature Conditions ◽  
Sintering Condition

In this paper, 0.95K0.5Na0.5NbO3-0.05LiTaO3 ceramics were synthesized by conventional mixed-oxide technique. To clarify the optimal sintering condition, three kinds of different temperature conditions were used. It was found that the samples sintered near 1130 °C had the best piezoelectric properties (d33~155 pC/N). In addition, sintering aid such as K5.4C1.3Ta10O29 was investigated to confirm whether it really benefited to the sintering process and increased the piezoelectric property of ceramics.

Ferroelectric Properties of Bi0.5(Na0.8K0.2)0.5TiO3 Ceramics

2014 ◽  
Vol 975 ◽  
pp. 3-8 ◽  
Author(s):  
Javier Camargo ◽  
Leandro Ramajo ◽  
Fernando Rubio-Marcos ◽  
Miriam Castro
Keyword(s):  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Secondary Phase ◽  
Processing Conditions ◽  
Secondary Phases ◽  
X Ray Diffraction ◽  
Ceramic Powders ◽  
Density Measurements ◽  
X Ray ◽  
Xrd Patterns

Different processing conditions and the effect of secondary phases on ferroelectric properties of Bi0.5(Na0.8K0.2)0.5TiO3(BNKT) are studied. Ceramic powders are prepared by solid state reaction and different sintering temperatures (temperatures between 1075 and 1150°C) are analyzed. Finally, samples are characterized by X-ray diffraction, Raman microspectroscopy, Scanning Electron Microscopy, impedance spectroscopy, and density measurements. Through XRD patterns, the perovskite structure is stabilized; together with small peaks corresponding to a secondary phase associated with K2-xNaxTi6O13phase. Moreover, the content of the secondary phase, d33piezoelectric constant and dielectric properties increase with sintering temperature.

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.

Synthesis and Properties of Lead Free Ferroelectric Na0.5Bi0.5TiO3 Ceramic at Different Sintering Temperature

2015 ◽  
Vol 830-831 ◽  
pp. 620-623 ◽  
Author(s):  
Kusum Parmar ◽  
Hakikat Sharma ◽  
Sarita Sharma ◽  
N.S. Negi
Keyword(s):  
Phase Transition ◽  
Room Temperature ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Sol Gel ◽  
Lead Free ◽  
Characteristic Absorption Band ◽  
Different Temperatures ◽  
Xrd Patterns ◽  
Rhombohedral Symmetry

Lead Free Ferroelectric Na0.5Bi0.5TiO3 (NBT) Ceramic has been synthesized using sol gel method. The prepared NBT samples have been sintered at different temperatures 850°C, 950°C, 1050°C and 1150°C to achieve best sintering temperature. Structural analyses have been carried out using XRD and FTIR measurements. XRD patterns confirm perovskite structure having rhombohedral symmetry for all samples which is also supported by characteristic absorption band at ~627cm-1 in FTIR spectra. Dielectric properties of NBT samples with frequency and temperature have been studied. NBT sample sintered at 1050°C exhibit comparatively high value of dielectric constant (ε’) and phase transition temperature (Tm). Ferroelectric properties of NBT samples have been studied at room temperature. Comparatively, better ferroelectric properties are observed for NBT sample having remnant polarization (Pr)~ 14.7 μC/cm2and coercive field (Ec)~ 26.8 kV/cm sintered at 1050°C.

Processing and Properties of PSZN-PZT Quaternary Piezoelectric Ceramics

2007 ◽  
Vol 280-283 ◽  
pp. 205-208
Author(s):  
Li Feng Wang ◽  
Qingchi Sun
Keyword(s):  
Electric Field ◽  
Phase Boundary ◽  
Morphotropic Phase Boundary ◽  
Sintering Temperature ◽  
Perovskite Phase ◽  
Ferroelectric Properties ◽  
High Electric Field ◽  
Sintering Behavior ◽  
Synthesis Methods ◽  
Xrd Patterns

Piezoelectric Pb(Sn1/3Nb2/3)O3-Pb(Zn1/3Nb2/3)O3-PbTiO3-PbZrO3 (PSZN-PZT) quarternary ceramics with varying Zr/Ti ratio, which locate in the vicinity of the morphotropic phase boundary (MPB), were prepared by the conventional calcination route. The conventional and twice synthesis methods were compared. XRD patterns indicated the more complete perovskite phase was formed by the twice synthesis methods. The sintering behavior was investigated. The microstructure was studied and the piezoelectric and ferroelectric properties and the properties under high electric field were determined. The optimized results were obtained when the ratio of Zr/Ti is 43/45 and the sintering temperature is 1260°C.

Influence of Sintering Conditions on Electric Performance of Textured 92BNT-6BT-2KNN Ceramics

2012 ◽  
Vol 512-515 ◽  
pp. 1380-1384 ◽  
Author(s):  
Cheng Gen Ye ◽  
Fang Fu ◽  
Bo Shen ◽  
Ji Wei Zhai
Keyword(s):  
Phase Transformation ◽  
Volume Change ◽  
Temperature Increase ◽  
Grain Orientation ◽  
Sintering Temperature ◽  
Sintering Process ◽  
Templated Grain Growth ◽  
Soaking Time ◽  
Sintering Conditions ◽  
Lotgering Factor

0.92(Bi0.5Na0.5)TiO3-0.06BaTiO3-0.02(K0.5Na0.5)NbO3(92BNT-6BT-2KNN) is a high-stain material due to the volume change which come from antiferroelectric-ferroelectric (AFE-FE) phase transformation. Textured 92BNT-6BT-2KNN with a Lotgering factor of 67% was obtained by templated grain growth (TGG) method using plate-like (Bi0.5Na0.5)TiO3（BNT）particles as templates. The influences of sintering process on Lotgering factor and strain were investigated. It was found that the Lotgering factor increased as sintering temperature increase and then decreased with further temperature increase. The changing tendency of polar and unipolar strain did not keep the same accordance with that of Lotgering factor. The maximum of Lotgering factor (79%) and polar strain (0.36%) was obtained when the sintering temperature was 1240°C and 1220°C, respectively, due to the decrease of density when high sintering temperature was employed. Also it was found that the lotgering factor and polar strain reached its highest values when the soaking time was 4h. All these proved that the density and grain orientation codetermined the strain of 92BNT-6BT-2KNN ceramics.

scholarly journals Dielectric and ferroelectric properties of CuO-doped lead magnesium niobate-based relaxor ferroelectric ceramics

2019 ◽  
Vol 09 (04) ◽  
pp. 1950033
Author(s):  
Li Jin ◽  
Jing Pang ◽  
Yunyao Huang ◽  
Wenting Luo ◽  
Xu Lu ◽  
...  
Keyword(s):  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Pyrochlore Phase ◽  
Hysteresis Loops ◽  
Solid State Reaction Method ◽  
Relaxor Ferroelectric ◽  
Ferroelectric Ceramics ◽  
Conventional Solid State Reaction ◽  
Lead Magnesium ◽  
Relaxor Ferroelectric Ceramics

In this work, we report the dielectric and ferroelectric properties of CuO-doped ([Formula: see text])[0.5573Pb(Mg[Formula: see text]Nb[Formula: see text])O3-0.4427PbTiO3]-[Formula: see text]Ba(Zn[Formula: see text]Nb[Formula: see text]O3 (PMNT-[Formula: see text]BZN) relaxor ferrielectric ceramic samples with [Formula: see text], 0.1925, 02125 and 0.2325, which were fabricated by a conventional solid-state reaction method. By introducing the CuO into PMNT-[Formula: see text]BZN, the sintering temperature of this system is drastically lowered from 1280∘C to 1120∘C. The second pyrochlore phase, which is often generated during sintering at high temperature, is also inhibited. Meanwhile, broad dielectric peaks with strong dielectric relaxation characteristics are observed from [Formula: see text]C to 100∘C. Slim and slanted [Formula: see text]-[Formula: see text] hysteresis loops and purely electrostrictive strains with V-shape are obtained simultaneously in studied compositions from 30∘C to 150∘C. These results suggest that CuO could effectively lower the sintering temperature while maintaining the dielectric and ferroelectric properties of PMNT-[Formula: see text]BZN relaxor ferroelectric ceramics.

LOW SINTERING TEMPERATURE OF LEAD MAGNESIUM NIOBATE-LEAD TITANATE (0.9PMN–0.1PT) BY ADDING OXIDE ADDITIVES

2008 ◽  
Vol 22 (25n26) ◽  
pp. 4749-4757
Author(s):  
NUTTAPON PISITPIPATHSIN ◽  
KAMONPAN PENGPAT ◽  
SUKUM EITSSAYEAM ◽  
TAWEE TUNKASIRI ◽  
SOMNUK SIRISOONTHORN ◽  
...  
Keyword(s):  
Mixed Oxide ◽  
Lead Titanate ◽  
Sintering Temperature ◽  
Ferroelectric Properties ◽  
Research Work ◽  
Lead Magnesium Niobate ◽  
Oxide Additive ◽  
Ceramic Samples ◽  
Lead Magnesium ◽  
Low Sintering Temperature

This research work is aimed at lowering the sintering temperature of 0.9PMN–0.1PT ceramics by adding oxide additives. The oxides used for this purpose were Bi 2 O 3 and Li 2 CO 3 with various amounts, following the formula of xBi 2 O 3+y Li 2 CO 3, where x+y = 10 mol % and x = 1, 3, 5 and the mixed oxide additive powders were then added to the dried powder of 0.9PMN–0.1PT with 1 wt% concentration. An excess PbO content of approximately 3 wtadded to all compositions to compensate the lead loss. After that, the mixed powders were pressed into pellets and subsequently sintered to form the ceramic samples. The results showed that the sintering temperature of 0.9PMN–0.1PT ceramics could be lowered down from 1250°C to 900–1000°C by the addition of small amount of the oxide additives, where the optimum composition was found in the sample with x : y = 1 : 9 at sintering temperature of 1000°C. Moreover, the densification, dielectric and ferroelectric properties of this sample remain acceptable in particular uses, promising positive future for reduction of lead loss from electrical and electronic industries.

Effects of Sintering Conditions on Properties of a Warm Compacted Stainless Steel Powder

2012 ◽  
Vol 217-219 ◽  
pp. 483-486
Author(s):  
Mei Yuan Ke
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Sintered Density ◽  
Sintering Temperature ◽  
Steel Powder ◽  
Stainless Steel Powder ◽  
Sintering Atmosphere ◽  
Comprehensive Properties ◽  
Ammonia Atmosphere ◽  
Sintering Conditions

Effects of Sintering atmosphere and temperature on properties of warm compacted 410L stainless steel powder were studied. Sintered density, hardness, tensile strength and elongation were measured. Results showed that in order to achieve high comprehensive properties, the optimal sintering temperature was 1230°C for 410L stainless steel powder. At the same sintering temperature, density and hardness sintered in vacuum were much higher than that sintered in cracked ammonia while tensile strength sintered in cracked ammonia were much higher than that in vacuum. When sintered in vacuum at 1230°C, sintered density was 7.45 g•cm-3, hardness was 65 HRB, tensile strength was 410 MPa and elongation was 29.5%. When sintered in cracked ammonia atmosphere at 1230°C, sintered density was 7.26 g•cm-3, hardness was 97 HRB, tensile strength was 515 MPa and elongation was 3.8%.

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