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Effects of Y2O3 additives and powder purity on the densification and grain boundary composition of Al2O3/SiC nanocomposites

Abstract:

Sub-micron sized SiC additions can be used to increase the wear resistance and change the fracture mode of Al2O3. However, these additions also restrict sintering. Al2O3 and Al2O3-5%SiC 'nanocomposites' were prepared from alumina powders of high purity and of commercial-purity, with or without the addition of Y2O3. The effects of these compositional variables on sintering rate, final density and grain boundary composition were investigated. A direct comparison with Al2O3-SiO2 composites was a...

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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
Journal:
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume:
29
Issue:
9
Pages:
1613-1624
Publication date:
2009-06-05
DOI:
ISSN:
0955-2219
URN:
uuid:97318809-b9a5-489f-82bd-4e5d3e50f861
Source identifiers:
531
Local pid:
pubs:531
Language:
English
Keywords:

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