Abstract
SINCE the first reports of the allotropes of the element plutonium1, one aspect of continuing interest has been the existence of the δ′-phase occurring in the temperature-range 450–480° C. Recent determination of the latent heats of transition of the allotropes of plutonium2 enable the thermodynamic aspect of the effects of alloying elements (at impurity-level concentrations) on the δ⇌δ′ transition to be considered.
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References
Lord, W. B. H., Nature, 173, 534 (1954). Ball, J. G., Robertson, J. A. L., Mardon, P. G., Lee, J. A., and Adams, E. T., ibid., 173, 535 (1954).
Dean, D. J., Kay, A. E., and Loasby, R. G., J. Inst. Metals, 86 (10), 464 (1957–58).
Wilson, A. J. C., J. Inst. Metals, 70, 543 (1944).
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COPE, R. The Delta Plutonium Transition Temperature. Nature 186, 539–540 (1960). https://doi.org/10.1038/186539a0
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DOI: https://doi.org/10.1038/186539a0
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