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Sintering of Yttria Stabilized Zirconia in Tetragonal Phase by Two Steps Sintering

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Abstract:

The microstructures of solid electrolytes play an important role in the level of ionic conductivity of these materials. Thus join the mechanical properties of partially stabilized tetragonal phase and the ionic conductivity displayed by the large area of the grain boundaries of polycrystalline zirconia nanometric is an advantage. The objective of this work is to study the densification of ultrafine particles of yttria stabilized zirconia in the tetragonal phase (Y-TSZ) obtained by chemical routes using the unconventional method of sintering the Two Steps Sintering (TSS). The nanocrystalline powders Y-TSZ (4.5 mol%) were prepared by Pechini method and were characterized by X-ray diffraction and scanning electronic microscopy (SEM). The powders were pressed and sintered per TSS. The density of sintered samples was measured by Archimedes method, the crystalline structure was determinate by X-ray diffraction and the grain size and microstructure were observed by SEM. The TSS prevented the grain growth keeping your submicrometer grain size.

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Info:

Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

1075-1080

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.1075

Citation:

Cite this paper

Online since:

August 2012

Authors:

Eleomar Lena, Adilson Luiz Chinelatto, Adriana Scoton Antonio Chinelatto, Aldo Przybysz

Keywords:

High Compression Pressures, Nanocrystalline Materials, Pechini Method, Two Step Sintering

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