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A Critical Appraisal of the Interfacial Toughness of Ceramic Matrix Composites Using Indentation Techniques
CSIRO, Lindfield, NSW.
Luleå tekniska universitet.
CSIRO, Lindfield, NSW.
1999 (English)In: Key Engineering Materials, ISSN 1013-9826, E-ISSN 1662-9795, Vol. 161-163, no 675-680, p. 675-680Article in journal (Refereed) Published
Abstract [en]

Advanced ceramic matrix composites provide a challenge for both manufacturer and user necessitating better techniques to critically appraise their properties. Interfacial toughness and the change of this property with application time at elevated temperature in hostile environments is of paramount importance for structural integrity/reliability of these materials. The present study investigates two such composite systems; a mullite matrix reinforced with silicon carbide fibres, and a novel oxide composite using sapphire fibres within an alumina-zirconia matrix. The interfacial toughness between the fibres and matrix was evaluated using nano- and micro-indentation fracture toughness methodologies. The results are interpreted in terms of recent theoretical interfacial fracture mechanics analysis by Hutchinson and Suo[1] for cracks approaching and extending along an interface. Nano-indentation has also been used to evaluate the intrinsic elastic/plastic properties of the CMC materials

Place, publisher, year, edition, pages
1999. Vol. 161-163, no 675-680, p. 675-680
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-5874Local ID: 41163720-fd44-11db-b816-000ea68e967bOAI: oai:DiVA.org:ltu-5874DiVA, id: diva2:978750
Note
Godkänd; 1999; 20070508 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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