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Título

Zirconia-multiwall carbon nanotubes dense nano-composites with an unusual balance between crack and ageing resistance

AutorGarmendia, N.; Grandjean, S.; Chevalier, Jérôme; Díaz, Luis A. ; Torrecillas, Ramón ; Obieta, I.
Fecha de publicación2011
EditorElsevier
CitaciónJournal of the European Ceramic Society 31: 1009-1014 (2011)
ResumenYttria stabilized zirconia (Y-TZP) ceramics are used in a wide variety of applications, such as orthopaedic and dental implants. Y-TZP offers indeed a unique combination of biocompatibility and mechanical properties (high crack resistance for a ceramic). However, the major drawback of Y-TZP is their lack of stability: zirconia is prone to ageing, especially under humid atmosphere. Increasing the ageing resistance of Y-TZP led so far to a decrease of toughness and crack resistance. Here we show that the addition of a small volume fraction of multiwall carbon nanotubes (MWCNT) in a polycrystalline nano-structured Y-TZP sintered under specific conditions (Spark Plasma Sintering) leads to a material exhibiting a balance between ageing and crack resistance never reached before. © 2011 Elsevier Ltd.
URIhttp://hdl.handle.net/10261/50446
DOI10.1016/j.jeurceramsoc.2010.12.029
Identificadoresdoi: 10.1016/j.jeurceramsoc.2010.12.029
issn: 0955-2219
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