Lanthanide transport in stabilized zirconias : Interrelation between ionic radius and diffusion coefficient

The diffusion of all stable lanthanides in calcia stabilized zirconia (CSZ) and in yttria stabilized zirconia (YSZ) was measured. Lanthanide migration enthalpies were calculated using the Mott-littleton approach. The results suggest that the bulk diffusion coefficient depends on the ionic radius of...

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Detalles Bibliográficos
Autores principales: Kilo, Martin, Taylor, Marcela Andrea, Argirusis, Christos, Borchardt, Günter, Weber, Sylvain, Scherrer, Hubert, Jackson, Robert A.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Física
Ciencias Exactas
Lanthanides
Cation diffusion
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95702
https://ri.conicet.gov.ar/11336/74365
https://aip.scitation.org/doi/10.1063/1.1784439
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:The diffusion of all stable lanthanides in calcia stabilized zirconia (CSZ) and in yttria stabilized zirconia (YSZ) was measured. Lanthanide migration enthalpies were calculated using the Mott-littleton approach. The results suggest that the bulk diffusion coefficient depends on the ionic radius of the lanthanide tracer. It was also found that the experimental activation enthalpies are about 6eV for CSZ and between 4 and 5 eV for YSZ and almost constant for all lanthanides.

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