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Literature Abstracts

 1597.    ---------------.  [JACK, K. H.]  Binary and Ternary Interstitial Alloys. II.  Iron-Carbon-Nitrogen System.  Proc. Roy. Soc. (London), vol. 195, A, 1948, pp. 41-55; Chem. Abs., vol. 43, 1949, p. 3765.

       Reaction of CO with nitrides of Fe and of NH₃ with carbides of Fe gave new Fe carbonitrides, a series of new ternary interstitial alloys.  Carbonitrides with structures similar to corresponding Fe nitrides extend from Fe₈N₄ to Fe₈C₃N.  The latter is isomorphous with Fe₂N.  Phase fields are described.  Prolonged reaction of CO with nitrides of Fe leads to elimination of the N.  Below 50° the product is Fe percarbide; above this temperature it is cementite.