2933.     RUFF, O., AND MARTIN, W.  [Solubility of Carbon in Nickel.]  Metallurgie, vol. 9, 1912, pp. 143-148; Chem. Abs., vol. 6, 1912, p. 1128.

        At about 2,100°, Ni will dissolve 6.42% C, corresponding approximately to the formula Ni₃C.  Under the microscope a new constituent, evidently the carbide, was distinguished from the ground mass of Ni.  It was brown and resisted the etching solutions more than the Ni.  The behavior of the Ni-C alloys when heated resembled that of the Fe-C alloys, indicating that Ni and Fe form similar carbides.