Effect of sintering temperature on microstructure and electrical properties of Sr1−x(Na0.5Bi0.5) x Bi2Nb2O9 solid solutions

N-type Bi2Te3-Sb2Te3 solid solutions doped with CdCl2 was prepared by melt spinning, crushing and vacuum sintering processes. Microstructure, bending strength and thermoelectric property were investigated as a function of the doping quantity from 0.03wt.% to 0.10wt.% and sintering temperature from 400oC to 500oC, and finally compared with those of conventionally fabricated alloys. The alloy showed a good structural homogeneity as well as bending strength of 3.88Kgf/mm2. The highest thermoelectric figure of merit was obtained by doping 0.03wt.% and sintering at 500oC.

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

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1061-1062.83 ◽

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

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Effect of Sintering Temperature on Electrical Properties of SFN Ceramics Doped with Al Prepared by a Solid-State Reaction Technique

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.675-676.527 ◽

2016 ◽

Vol 675-676 ◽

pp. 527-530

Author(s):

Thanatep Phatungthane ◽

Kachaporn Sanjoom ◽

Denis Russell Sweatman ◽

Buagun Samran ◽

Chamnan Randorn ◽

...

Keyword(s):

Solid State ◽

Electrical Properties ◽

Solid State Reaction ◽

Sintering Temperature ◽

Perovskite Phase ◽

Dielectric Behavior ◽

Orthorhombic Symmetry ◽

X Ray Diffraction ◽

Solid State Reaction Technique ◽

Pure Perovskite Phase

In the present work, strontium iron niobate SrFe0.5Nb0.5O3 ceramics doped with aluminum were synthesized by a solid-state reaction technique. Phase formation investigation by X-ray diffraction technique (XRD) revealed that all ceramics exhibited pure perovskite phase with orthorhombic symmetry. Grain size observed by electron microscopy (SEM) was found to increase with increasing sintering temperature. The electrical properties and related parameters of the ceramics were also measured. The ceramics exhibit very good dielectric behavior and have a significant potential for dielectric applications.

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