PERSONAL DE APOYO
RUNCO Jorge Marcelo
artículos
Título:
PALS study on the defect structure of yttria-stabilized zirconia
Autor/es:
L. C. DAMONTE; M. A. TAYLOR; J. DESIMONI; J. RUNCO
Revista:
RADIATION PHYSICS AND CHEMISTRY (OXFORD)
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Lugar: Amsterdam; Año: 2007 vol. 76 p. 248 - 251
ISSN:
0969-806X
Resumen:
Powders of stabilized ZrO2?8 mol% Y2O3 (YSZ) have been obtained by mechanical milling in zirconia vials. The samples were characterized by X-ray diffraction (XRD). Positron annihilation lifetime (PALS) measurements were performed to investigate the lattice defects originated by the incorporation of yttria and those mechanically induced. The XRD results indicate the formation of tetragonal YSZ solid solution. PALS results indicate that positron trapping occurs at different kinds of defects such as vacancy-like defects, grain boundary and associated defects.
