Preparation of tetragonal ZrO2-12 mol% CeO2 and ZrO2-6 mol% YO1.5 solid solutions at reduced temperature by a simple aqueous solution route using citric acid as a complexant

Masato Kakihana; Shingo Kato; Masatomo Yashima; Masahiro Yoshimura

doi:10.1016/S0925-8388(98)00716-6

Preparation of tetragonal ZrO₂-12 mol% CeO₂ and ZrO₂-6 mol% YO_1.5 solid solutions at reduced temperature by a simple aqueous solution route using citric acid as a complexant

Masato Kakihana, Shingo Kato, Masatomo Yashima, Masahiro Yoshimura

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

A simple aqueous solution technique utilizing citric acid as a complexant was applied to prepare tetragonal ZrO₂-12 mol% CeO₂ and ZrO₂-6 mol% YO_1.5 solid solution powders at relatively low temperatures, viz. 600-1000°C. Heating of a mixed solution of citric acid (CA), water (H₂O) and Ce (or Y) ions in the molar ratio of [CA]/[H₂O]/[Zr+Ce (or Y)]=12.5(17.5 in the case of Y):300:1 on a hot-plate set at 160-200°C produced a transparent "gel" without any precipitation, which after heat treatment at 200°C was converted to a precursor for Zr_0.88Ce_0.12O₂ (or Zr_0.94Y_0.06O_1.97). The formation of compositionally homogeneous tetragonal zirconia phases occurred during the heat treatment of the precursor at 600-1000°C in static air, which was confirmed by a combined analysis using XRD and Raman scattering techniques.

Original language	English
Pages (from-to)	125-130
Number of pages	6
Journal	Journal of Alloys and Compounds
Volume	280
Issue number	1-2
DOIs	https://doi.org/10.1016/S0925-8388(98)00716-6
Publication status	Published - 1998 Oct 23
Externally published	Yes

Keywords

Ceria
Citric acid route
Zirconia

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0925-8388(98)00716-6

Cite this

Preparation of tetragonal ZrO₂-12 mol% CeO₂ and ZrO₂-6 mol% YO_1.5 solid solutions at reduced temperature by a simple aqueous solution route using citric acid as a complexant. / Kakihana, Masato; Kato, Shingo; Yashima, Masatomo et al.
In: Journal of Alloys and Compounds, Vol. 280, No. 1-2, 23.10.1998, p. 125-130.

Research output: Contribution to journal › Article › peer-review

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abstract = "A simple aqueous solution technique utilizing citric acid as a complexant was applied to prepare tetragonal ZrO2-12 mol% CeO2 and ZrO2-6 mol% YO1.5 solid solution powders at relatively low temperatures, viz. 600-1000°C. Heating of a mixed solution of citric acid (CA), water (H2O) and Ce (or Y) ions in the molar ratio of [CA]/[H2O]/[Zr+Ce (or Y)]=12.5(17.5 in the case of Y):300:1 on a hot-plate set at 160-200°C produced a transparent {"}gel{"} without any precipitation, which after heat treatment at 200°C was converted to a precursor for Zr0.88Ce0.12O2 (or Zr0.94Y0.06O1.97). The formation of compositionally homogeneous tetragonal zirconia phases occurred during the heat treatment of the precursor at 600-1000°C in static air, which was confirmed by a combined analysis using XRD and Raman scattering techniques.",

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author = "Masato Kakihana and Shingo Kato and Masatomo Yashima and Masahiro Yoshimura",

note = "Funding Information: Financial support of a grant-in-aid (COE) from the Ministry of Education is acknowledged.",

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AU - Yoshimura, Masahiro

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N2 - A simple aqueous solution technique utilizing citric acid as a complexant was applied to prepare tetragonal ZrO2-12 mol% CeO2 and ZrO2-6 mol% YO1.5 solid solution powders at relatively low temperatures, viz. 600-1000°C. Heating of a mixed solution of citric acid (CA), water (H2O) and Ce (or Y) ions in the molar ratio of [CA]/[H2O]/[Zr+Ce (or Y)]=12.5(17.5 in the case of Y):300:1 on a hot-plate set at 160-200°C produced a transparent "gel" without any precipitation, which after heat treatment at 200°C was converted to a precursor for Zr0.88Ce0.12O2 (or Zr0.94Y0.06O1.97). The formation of compositionally homogeneous tetragonal zirconia phases occurred during the heat treatment of the precursor at 600-1000°C in static air, which was confirmed by a combined analysis using XRD and Raman scattering techniques.

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