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1728. ---------------. [KELLEY, K. K.] Data on Theoretical Metallurgy. VIII. Thermodynamic Properties of Metal Carbides and Nitrides. Bureau of Mines Bull. 407, 1937, 66 pp.; Chem. Abs., vol. 32, 1938, p. 2821.
Thermodynamic data relating to metal carbides and nitrides are collected and discussed with the view of obtaining usable heat and free energy of formation relations. Pertinent data are difficult to obtain experimentally and are rare; this fact necessitates frequent use of approximations and assumptions. CH4 and NH3 also are included because some of the reactions considered involve these substances. The carbides considered are those of Al, Ca, Cr, Co, Fe, Mn, Mo, Ni, Si, Na, Th, Ti, W, U, V and Zr. The nitrides include those of Al, Ba, Be, B, Ca, Ce, Cr, Fe, La, Li, Mg, Mn, Mo, Si, Sr, Ta, Th, Ti, U, V and Zr. The data are applied in a discussion of the following: (1) Carburization of Fe by CH4, (2) debismuthizing of Pb by Ca through the medium of CaC2, (3) partition of C between Mn and Fe in the γ range, (4) possibility of producing NH3 direct from natural gas, (5) decarburization of Cr and (6) possibility of producing cyanides from CO and NH3. Bibliography of 108 refs.