MECHANICAL AMD MICROSTRUCTURAL CHARACTERISATION OF NEXTEL 650 ALUMINA-ZIRCONIA FIBRES

MECHANICAL AMD MICROSTRUCTURAL CHARACTERISATION OF NEXTEL 650 ALUMINA-ZIRCONIA FIBRES

A two-phase alumina-zirconia fibre, the Nextel 650 fibre (3M), was studied in tension and creep up to 1300 C. Microstructual investigation on as-received and tested fibres were conducted in parallel. Compared to current commercially available fine oxide fibres (alumina and alumina-zirconia based), t...

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Veröffentlicht in:Journal of the European Ceramic Society 2004-01, Vol.24 (9), p.2769-2783
Hauptverfasser: Poulon-Quintin, A, Berger, M H, Bunsell, A R
Format: Artikel
Sprache:eng
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Zusammenfassung:A two-phase alumina-zirconia fibre, the Nextel 650 fibre (3M), was studied in tension and creep up to 1300 C. Microstructual investigation on as-received and tested fibres were conducted in parallel. Compared to current commercially available fine oxide fibres (alumina and alumina-zirconia based), the fibre shows good creep resistance despite a smaller alumina grain size. High temperature deformation of the fibre is achieved by grain-boundary sliding and is accompanied by oriented alumina grain growth. Sensitivity to alkaline contamination is shown by fast alpha-alumina grain growth at the fibre surface. 20 refs.
ISSN:0955-2219