PALS study on the defect structure of yttria-stabilized zirconia

Autor:	Laura Cristina Damonte, J. Runco, Marcela Andrea Taylor, Judith Desimoni
Rok vydání:	2007
Předmět:	Diffraction Tetragonal crystal system Crystallography Radiation Materials science Chemical engineering Lattice defects Cubic zirconia Grain boundary Yttria-stabilized zirconia Solid solution Positron annihilation
Zdroj:	Radiation Physics and Chemistry. 76:248-251
ISSN:	0969-806X
DOI:	10.1016/j.radphyschem.2006.03.046
Popis:	Powders of stabilized ZrO 2 –8 mol% Y 2 O 3 (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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::56481c494ebecaa72247112705b3dec1 https://doi.org/10.1016/j.radphyschem.2006.03.046 Zobrazit plný text záznamu Full Text from ScienceDirect