Phase Formation, Microstructures and Mechanical Properties of Lead-Free BNKT Ferroelectric Ceramics Doped with BZZ

Chatchai Kruae-In; Paponsan Puanpia; Orawan Takhan; Suchittra Inthong

doi:10.4028/www.scientific.net/KEM.675-676.589

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 675-676Phase Formation, Microstructures and Mechanical...

Phase Formation, Microstructures and Mechanical Properties of Lead-Free BNKT Ferroelectric Ceramics Doped with BZZ

Abstract:

In this research, the effects of bismuth zinc zirconate (BZZ) additive on phase formation, microstructural and mechanical properties of bismuth sodium potassium titanate (BNKT) ceramics were investigated. The BZZ-doped BNKT ceramics were prepared using solid state reaction technique. The pure phase of BZZ-doped BNKT powders were achieved for a calcinations temperature of 850 °C for 4h. The obtained powders were pressed into small pellets and sintered at optimum temperature to from dense ceramics. The XRD analysis of the ceramics shows that all ceramic samples exhibited a pure phase perovskite structure. The bulk densities of samples were about 5.82-6.03 g/cm³ which measured using the Archimedes method. The mechanical properties were measured using micro hardness tester. The microstructural of sintered surface was investigated using scanning electron microscopy (SEM). Average grain size increased with increasing BZZ content. The relations of these results were discussed and compared to the previous works.

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Key Engineering Materials (Volumes 675-676)

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589-592

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https://doi.org/10.4028/www.scientific.net/KEM.675-676.589

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January 2016

Authors:

Chatchai Kruae-In, Paponsan Puanpia, Orawan Takhan, Suchittra Inthong*

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Lead-Free, Mechanical Properties, Phase Formation

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