Contact damage in a Ce-TZP/Al2O3 nanocomposite

The damage tolerance of nanocomposites based on Ce-TZP and 30 vol% Al2O3 was studied under monotonic contact with a spherical indenter to understand the viability of this new type of ceramic in medical applications such as dental prostheses. The results were compared with those previously known for...

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Bibliographic Details
Published in:	Journal of the European Ceramic Society Vol. 31; no. 13; pp. 2189 - 2197
Main Authors:	Marro, F G, Mestra, A, Anglada, M
Format:	Journal Article Publication
Language:	English
Published:	Elsevier 01-11-2011
Subjects:	3Y-TZP materials Ceramics Contact Desgast de materials Enginyeria dels materials Fracture mechanics Nanocomposites Nanocomposites (Materials) Nanomaterials Nanostructure Tetragonal zirconia polycrystals Yttria stabilized zirconia Zircó ZrO2 Àrees temàtiques de la UPC
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Summary:	The damage tolerance of nanocomposites based on Ce-TZP and 30 vol% Al2O3 was studied under monotonic contact with a spherical indenter to understand the viability of this new type of ceramic in medical applications such as dental prostheses. The results were compared with those previously known for commercial biomedical grade 3Y-TZP. It was concluded that the minimum load for ring crack appearance was similar in both ceramics. However, in the nanocomposite the ring cracks penetrated less into the bulk material, due to its higher fracture toughness. Finally, the stress-induced phase transformation of the zirconia component was quantified and mapped by micro-Raman spectroscopy.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 ObjectType-Article-2 ObjectType-Feature-1
ISSN:	0955-2219
DOI:	10.1016/j.jeurceramsoc.2011.05.022