Early-stage sintering mechanisms of Fe-doped CeO2

Zhang Tianshu; Peter Hing; Haitao Huang; J. Kilner

doi:10.1023/A:1014362000128

Early-stage sintering mechanisms of Fe-doped CeO₂

Zhang Tianshu
, Peter Hing
, Haitao Huang
, J. Kilner

Research output: Journal article publication › Journal article › Academic research › peer-review

96 Citations (Scopus)

Abstract

Cerium oxide is a very useful base material used as catalyst supports, ion conductors and gas sensors. It is also well known that ceria-based materials are difficult to densify below 1500°C. However, a small amount of Fe doping obviously promotes the densification rate and reduces the sintering temperatures. In this study, the early stage sintering mechanisms of undoped and Fe-doped CeO2were investigated, based on two sintering models. We confirm that pure CeO2exhibits volume-diffusion controlled sintering, while a viscous flow mechanism dominates the early stage sintering of Fe-doped CeO2.

Original language	English
Pages (from-to)	997-1003
Number of pages	7
Journal	Journal of Materials Science
Volume	37
Issue number	5
DOIs	https://doi.org/10.1023/A:1014362000128
Publication status	Published - 1 Mar 2002
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1023/A:1014362000128

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AU - Huang, Haitao

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AB - Cerium oxide is a very useful base material used as catalyst supports, ion conductors and gas sensors. It is also well known that ceria-based materials are difficult to densify below 1500°C. However, a small amount of Fe doping obviously promotes the densification rate and reduces the sintering temperatures. In this study, the early stage sintering mechanisms of undoped and Fe-doped CeO2were investigated, based on two sintering models. We confirm that pure CeO2exhibits volume-diffusion controlled sintering, while a viscous flow mechanism dominates the early stage sintering of Fe-doped CeO2.

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Early-stage sintering mechanisms of Fe-doped CeO₂

Abstract

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