INVESTIGADORES
TAYLOR Marcela Andrea
artículos
Título:
96Zr Diffusion in polycrystalline scandia stabilized zirconia
Autor/es:
MARCELA ANDREA TAYLOR; M. KILO; C. ARGIRUSIS; G. BORCHARDT; S. WEBER; H. SCHERRER
Revista:
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Editorial:
ELSEVIER SCI LTD
Referencias:
Año: 2005 vol. 25 p. 1591 - 1595
ISSN:
0955-2219
Resumen:
Diffusion of the stable tracer isotope 96Zr in 12 mol% polycrystalline scandia stabilized zirconia was studied in air in the temperature range from 1200 to 1600 ◦C. Secondary ion mass spectroscopy (SIMS) was used to record the tracer diffusion profiles. The activation enthalpies for bulk and grain boundary diffusion were determined to be (5.0 ± 0.4) eV and (3.9 ± 0.5) eV, respectively, with the latter being six to seven orders in magnitude faster than the first. Using XRD, it was proved that the diffusion occurs only in the cubic phase.
