Effect of nano-Al2O3 addition on the densification of YSZ electrolytes

Hotza, Dachimir, Leo, Adrian, Sunarso, Jaka and Diniz da Costa, João C. 2009, Effect of nano-Al2O3 addition on the densification of YSZ electrolytes, Journal of nano research, vol. 6, pp. 115-122, doi: 10.4028/www.scientific.net/JNanoR.6.115.

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Title Effect of nano-Al2O3 addition on the densification of YSZ electrolytes
Author(s) Hotza, Dachimir
Leo, Adrian
Sunarso, Jaka
Diniz da Costa, João C.
Journal name Journal of nano research
Volume number 6
Start page 115
End page 122
Publisher Trans Tech Publications Ltd
Place of publication Zürich, Switzerland
Publication date 2009
ISSN 1662-5250
Summary This work investigates the effect of nanosized Al2O3 addition on the sinterability of YSZ electrolyte. (1-x)YSZ + Al2O3 ceramics with compositions x = 0 to 0.01 were prepared by the conventional mixed oxide route from a commercial powder suspension (particle size <50 nm), and sintered at 1200 to 1500 degrees C for 2 hours in air. Densification, phase evolution, and microstructure were characterized by SEM/EDS and XRD. An improvement in sintered density was observed for the samples with 0.2 to 0.5 mol% Al2O3, though depending on the sintering temperature. Only cubic zirconia was detected as crystalline phase, although XRD features suggested chemical interactions depending upon the amount of Al2O3. The grain size of YSZ was homogeneous and no second phase segregation was detected in the tested range of incorporated nano-Al2O3 and sintering temperatures.
Language eng
DOI 10.4028/www.scientific.net/JNanoR.6.115
Field of Research 090404 Membrane and Separation Technologies
Socio Economic Objective 861002 Ceramics
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, Trans Tech Publications
Persistent URL http://hdl.handle.net/10536/DRO/DU:30039086

Document type: Journal Article
Collections: Centre for Material and Fibre Innovation
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