Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9793658 | Journal of Nuclear Materials | 2005 | 6 Pages |
Abstract
A thermochemical model of defects formation is proposed. Using this model, defect species concentrations are determined. The model allows for the calculation of the non-stoichiometry of PuO2âx, as functions of temperature and oxygen pressure. A model of oxygen diffusion is proposed and the oxygen self and chemical diffusivities are calculated for temperatures in the (900-1400 °C) range and partial pressure of oxygen PO2 â (1-10â25 atm). This work shows that, given appropriate parameters, the model is able to describe the non-stoichiometry and oxygen diffusivity in a reasonable way.
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Authors
M. Stan, P. Cristea,