Early-stage sintering mechanisms of Fe-doped CeO2

被引：107

作者：

Tianshu Z. ^{[1
]}

Hing P. ^{[1
]}

Huang H. ^{[1
]}

Kilner J. ^{[2
]}

机构：

[1] Advanced Materials Research Centre, School of Materials Engineering, Nanyang Technological University, Singapore 639798, Nanyang Avenue

[2] Department of Materials, Imperial College of Science, Technology and Medicine

来源：

Journal of Materials Science | 2002年 / 37卷 / 05期

关键词：

Polymer; Cerium; CeO2; Base Material; Sinter Temperature;

D O I：

10.1023/A:1014362000128

中图分类号：

学科分类号：

摘要：

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 CeO2 were investigated, based on two sintering models. We confirm that pure CeO2 exhibits volume-diffusion controlled sintering, while a viscous flow mechanism dominates the early stage sintering of Fe-doped CeO2. © 2002 Kluwer Academic Publishers.

引用

页码：997 / 1003

页数：6

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