Grain‐Boundary Diffusion of U in Pure and Doped Uranium Carbides with Different C/U Ratios
- 1 March 1975
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 58 (3-4) , 81-84
- https://doi.org/10.1111/j.1151-2916.1975.tb19561.x
Abstract
“The grain‐boundary diffusivity of U in UC was measured between 1200” and 2200°C in pure carbides with a wide range of C/U ratios (0.93 to 2.00) and in material doped with up to 2.4 wt% W, V, or Ta. Grain‐boundary diffusion is ∼ 103 to 105 times faster than volume diffusion, and, for UC1,0, has an activation enthalpy of 75.9 ± 9.1 kcal/mol, ∼ 55% of that for volume diffusion. In the monocarbide region, grain‐boundary mobility increases as the C/U ratio decreases and is impeded by the addition of impurities.Keywords
This publication has 17 references indexed in Scilit:
- Uranium self-diffusion in stoichiometric uranium monocarbideJournal of Applied Physics, 1974
- Uranium self-diffusion in impurity-doped uranium carbideJournal of Nuclear Materials, 1974
- Uranium self-diffusion in stoichiometric uranium monocarbideJournal of Nuclear Materials, 1973
- Lattice and grain-boundary diffusions of protactinium in Th02 and in a ThO2-UO2 solid solutionJournal of Nuclear Materials, 1968
- Self-diffusion of uranium in uranium monocarbideJournal of Nuclear Materials, 1967
- Diffusion of Non Volatile Fission Products in Substoichiometric UCRadiochimica Acta, 1966
- Lattice and grain-boundary diffusion of uranium in UO2Journal of Nuclear Materials, 1966
- Lattice and Grain Boundary Diffusion in PolycrystalsTransactions of the Japan Institute of Metals, 1961
- CXXXVIII. Concentration contours in grain boundary diffusionJournal of Computers in Education, 1954
- Calculation of Diffusion Penetration Curves for Surface and Grain Boundary DiffusionJournal of Applied Physics, 1951