C-Na (Carbon-Sodium) System

There is no phase diagram available for this system. It may be conjectured that it would be similar to that for the C-Li system, and so would show (a) the compound C2Na2, (b) a liquid and (c) a eutectic of composition very close to 100 at.% Na and temperature very close to the M.P. of Na. Data for the solubility of C in liquid Na have been reported in [1957Gra, 1967Lun, 1969McK, 1970Geh, 1970Lon, 1972Sal, 1973Ack, 1974Ain]. Pertinent experimental details are summarized in Table 1. The data, plotted in Fig. 1, were fitted to the equation: Log10S 1⁄4 A B=T ðEq 1Þ

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