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Abstract

A review is given of recent results on diffusion processes in oxide systems, covering aspects of self-diffusion, thermodiffusion and impurity diffusion. The guide-line to select the oxide systems was either their basic scientific interest or their technological importance. For the latter, emphasis is placed on nuclear technology (mainly oxide fuels for fission reactors, with a few examples of oxides for fusion breeder blankets) whereas for the former, oxides are selected as examples for which diffusion measurements yield interesting results to better understand point defect behaviour, defect clustering, phase changes, deviations from stoichiometry, or processes such as creep. Thus, the oxides discussed include UO-(2+-x), ThO-2, (U,Pu)O-(2+-x), Li-2O, Fe-(3-x)O-4, NiO, FeO, CoO, TiO-2 and others. Two particular phenomena are treated in some detail: diffusion of volatile fission products in UO-2 nuclear fuel and diffusion processes of relevance to long term safe storage of radioactive waste in the form of glasses.

Additional information

Authors: MATZKE HJ JRC KARLSRUHE ESTAB. (GERMANY), JRC KARLSRUHE ESTAB. (GERMANY)
Bibliographic Reference: ANNUAL MEETING OF THE AMERICAN CERAMIC SOCIETY, CINCINNATI (USA), MAY 5, 1985 WRITE TO CEC LUXEMBOURG, DG XIII/A2, POB 1907 MENTIONING PAPER E 32494 ORA
Availability: Can be ordered online
Record Number: 1989124073200 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en