RT Journal Article
T1 Zirconia/nickel interfaces in micro- and nanocomposites
A1 Pecharromán, Carlos
A1 Beltrán Fínez, Juan Ignacio
A1 Esteban Betegón, Fátima
A1 López-Esteban, Sonia
A1 Bartolomé, José F.
A1 Muñoz, M. C.
A1 Moya, José S
AB Experimental tests for zirconia/nickel composites determined lower toughness than expected. In this regard, the combination of ab initio density functional theory calculations and high-resolution transmission electron microscopy observations allowed to describe the nature of the zirconia/nickel interface and to justify the absence of any toughening mechanism by grain bridging of the metal particles. In the particular case of nanocomposites, enhanced values of hardness were found. Hardness increases have been justified by a novel model which takes into account the Hall-Petch effect and mean particle size according to the percolation theory. It has been found that this model is not exclusive to zirconia/nickel but can be extended to several other superhard composites.
PB Carl Hanser Verlag
SN 0044-3093
YR 2005
FD 2005-05-17
LK https://hdl.handle.net/20.500.14352/92122
UL https://hdl.handle.net/20.500.14352/92122
LA eng
NO EuroConference on Interfaces in Nanostructured Materials (2004. Kloster Irsee, Germany)   JUN 06-11, 2004Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
NO Ministerio de Ciencia y Tecnología (España)
NO Consejo Superior de Investigaciones Cientificas (España)
NO European Social Fund
DS Docta Complutense
RD 8 abr 2025