PERSONAL DE APOYO
DI LALLA Nicolas
artículos
Título:
Experimental Determination of U Diffusion in alfa -Zr
Autor/es:
JORGE A. GORDILLO ; RODOLFO A. PEREZ; MANUEL IRIBARREN; N. DI LALLA
Revista:
JOURNAL OF NUCLEAR MATERIALS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2015 p. 85 - 90
ISSN:
0022-3115
Resumen:
U bulk diffusion in a-Zr was measured by mean a-spectrometry in the temperature range 763?1123 K(540?850 C). A deviation from the Arrhenius law consistent in a downward curvature was observed;such anomaly is similar to the self and hetero substitutional diffusion previously measured in a-Zrmatrix.The measurements are compatible with the existences of migrating Fe?vacancy complex that could becompetitive with a simplest single vacancy mechanism for substitutional diffusers. The possibility thatthis could be the reason for the non Arrhenius behaviour is discussed.
