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Effect of Cerium Oxide Additions on the Densification Behaviour of Alumina Gels

Published online by Cambridge University Press:  28 February 2011

Ratnesh Dwivedi  and
Jane Adams
Ratnesh Dwivedi
Affiliation:
Lanxide Corporation, One Tralee Industrial Park, Newark, DE 19711
Jane Adams
Affiliation:
IIT Research Institute, 10 W. 35th Street, Chicago, IL 60616
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Abstract

Sintering behavior of gel-derived alumina containing 2.8 mol percent cerium oxide (Ce2 O3) was studied at 1400°C. The growth morphology of alpha alumina in cerium oxide-containing aluminas was found to be significantly different form that of pure gel-derived alumina. Alumina gel containing 2.8 mol % Ce2 O3 was found to densify to 81% of the theoretical density as compared to 65% for pure alumina gels. The powdered cerium oxide-containing gels, pressed into a pellet, could be sintered to 97% of the theoretical density at 1400°C as compared to 87% found for pure alumina gel powder processed in an identical manner.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 60: Symposium L – Defect Properties and Processing of High-Technology Nonmetallic Materials , 1985 , 117
Copyright
Copyright © Materials Research Society 1986

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