RT Journal Article
T1 Positron annihilation study of defect distribution in 8YSZ nanostructure
A1 Gonzalo-Juan, Isabel
A1 Parente, Paola
A1 Sánchez-Herencia, A. J.
A1 Rubio, Fausto
A1 Pareja Pareja, Ramiro
A1 Ferrari, Begoña
AB The impact of the interfacial contribution on overall properties increases with decreasing grain size of polycrystalline materials. It is well known that distribution and size of cluster defects are rather different in bulk than grain boundaries. In light of "bottom-up" approaches, a study at the atomic level determining the distribution of crystallographic defects could clarify their contribution to the macroscopic properties, and then differentiate materials for outstanding or precise applications. In this work, Positron Annihilation Spectroscopy (PAS) is used to characterize the distribution of defects within 8 mol% Y₂O₃-stabilized zirconia (8YSZ) structures prepared by sintering through three different thermal treatments, i.e. a conventional thermal cycle in air and N₂/H₂ atmosphere, and a fast firing cycle in air, which lead to average grain sizes < 260 nm.
PB Elsevier
SN 0167-2738
YR 2011
FD 2011-05
LK https://hdl.handle.net/10016/19786
UL https://hdl.handle.net/10016/19786
LA eng
NO The authors would like to acknowledge the financial support from the Spanish Government through the projects MAT2009-14448-C02-01 and IPT-310000-2010-12.
DS e-Archivo
RD 28 may. 2024