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Title: Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process

Abstract

Nanosize yttria-stabilized zirconia (YSZ) was synthesized by a novel approach based on molecular decomposition. In this approach, yttria-doped BaZrO{sub 3} (Y-BaZrO{sub 3}) or yttria-doped Na{sub 2}ZrO{sub 3} (Y-Na{sub 2}ZrO{sub 3}) precursors were first synthesized from BaCO{sub 3}, ZrO{sub 2}, and Y2O{sub 3} or BaCO{sub 3} and commercial YSZ for Y-BaZrO{sub 3}, and from Na2CO{sub 3} and YSZ for Y-Na2ZrO{sub 3}, by a conventional solid-state reaction method. The precursors were then boiled to leach away the unwanted species, BaO or Na{sub 2}O, either in a dilute HNO{sub 3} solution in water in the case of Y-BaZrO{sub 3}, or in deionized water in the case of Y-Na{sub 2}ZrO{sub 3}. During boiling in HNO{sub 3} or water, the residue of Zr-Y-O skeleton formed fine, nanosize YSZ particles. The particle size of the as-synthesized nanosize powders estimated from X-ray diffraction peak broadening was {approximately}2-3 nm, while that estimated from specific surface area measurements by BET adsorption isotherm was {approximately}15 nm. Examination under a transmission electron microscope showed that the crystallite size was {approximately}5 nm. Samples were also examined by Raman spectroscopy to determine the crystallographic polymorph of the YSZ formed. Subsequent heating in air led to particle growth. However, even when the particles weremore » heated to a temperature as high as 1000 C, the particle size was well in the nanosize range.« less

Authors:
; ;
Publication Date:
Research Org.:
Department of Materials Science and Engineering, University of Utah, Salt Lake City, Utah (US)
Sponsoring Org.:
USDOE Office of Fossil Energy (FE) (US)
OSTI Identifier:
783964
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 157; Journal Issue: 1; Other Information: PBD: 15 Feb 2001; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ADSORPTION ISOTHERMS; AIR; BOILING; ELECTRON MICROSCOPES; HEATING; PARTICLE SIZE; RAMAN SPECTROSCOPY; RESIDUES; SKELETON; SPECIFIC SURFACE AREA; SYNTHESIS; WATER; X-RAY DIFFRACTION; YTTRIUM OXIDES; BARIUM OXIDES; SODIUM OXIDES; ZIRCONIUM OXIDES; CHEMICAL PREPARATION; DECOMPOSITION; LEACHING; LINE BROADENING; TRANSMISSION ELECTRON MICROSCOPY; EXPERIMENTAL DATA

Citation Formats

Yi, Jiang, Bhide, Sanjeevani V, and Virkar, Anil V. Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process. United States: N. p., 2001. Web.
Yi, Jiang, Bhide, Sanjeevani V, & Virkar, Anil V. Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process. United States.
Yi, Jiang, Bhide, Sanjeevani V, and Virkar, Anil V. Thu . "Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process". United States.
@article{osti_783964,
title = {Synthesis of Nanosize Yttria-Stabilized Zirconia by a Molecular Decomposition Process},
author = {Yi, Jiang and Bhide, Sanjeevani V and Virkar, Anil V},
abstractNote = {Nanosize yttria-stabilized zirconia (YSZ) was synthesized by a novel approach based on molecular decomposition. In this approach, yttria-doped BaZrO{sub 3} (Y-BaZrO{sub 3}) or yttria-doped Na{sub 2}ZrO{sub 3} (Y-Na{sub 2}ZrO{sub 3}) precursors were first synthesized from BaCO{sub 3}, ZrO{sub 2}, and Y2O{sub 3} or BaCO{sub 3} and commercial YSZ for Y-BaZrO{sub 3}, and from Na2CO{sub 3} and YSZ for Y-Na2ZrO{sub 3}, by a conventional solid-state reaction method. The precursors were then boiled to leach away the unwanted species, BaO or Na{sub 2}O, either in a dilute HNO{sub 3} solution in water in the case of Y-BaZrO{sub 3}, or in deionized water in the case of Y-Na{sub 2}ZrO{sub 3}. During boiling in HNO{sub 3} or water, the residue of Zr-Y-O skeleton formed fine, nanosize YSZ particles. The particle size of the as-synthesized nanosize powders estimated from X-ray diffraction peak broadening was {approximately}2-3 nm, while that estimated from specific surface area measurements by BET adsorption isotherm was {approximately}15 nm. Examination under a transmission electron microscope showed that the crystallite size was {approximately}5 nm. Samples were also examined by Raman spectroscopy to determine the crystallographic polymorph of the YSZ formed. Subsequent heating in air led to particle growth. However, even when the particles were heated to a temperature as high as 1000 C, the particle size was well in the nanosize range.},
doi = {},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 1,
volume = 157,
place = {United States},
year = {2001},
month = {2}
}