Neptunium metal

The Melting Point and the Density of Neptunium Metal. — A Micro... 

Pure neptunium metal can be made by heating neptunium trifluoride (Npp3) with hot barium or lithium metal ... 

The detailed mechanical behavior of neptunium metal has not been determined. a-Np twins profusely during plastic deformation at room temperature, indicating that few slip systems exist, and that a high resolved shear stress is required for yielding by slip. 

The Melting Point and Density of Neptunium Metal. A Micro Melting Point Apparatus for Metals, E.E Westrum Jr. and L. Eyring, J. Amer. Chem. Soc., 73,3399-3400 (1951). 

Thermodynamic parameters for the hydrolysis species of neptunium(IV) and its oxide phases can be determined from the stability and solubility constants accepted in the present review together with the thermodynamic data for neptunium metal and Np selected by Guillaumont et al. (2003). These latter data are the same values that were selected earlier by Grenthe et al. (1992). The obtained thermodynamic values are listed in Table 9.10. 

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