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Free energy of formation of Mo2C and the thermodynamic properties of carbon in solid molybdenumAs part of a study of the thermodynamical properties of interstitial elements in refractory metals, the free energy of formation of Mo2C is determined, and the thermodynamical properties of C in solution in solid Mo evaluated. The activity of C in the two-phase region Mo + Mo2C is obtained from the C content of iron rods equilibrated with metal + carbide powder mixtures. The free energy of formation of alpha-Mo2C is determined from the activity data. The thermodynamic properties of C in the terminal solid solution are calculated from available data on the solid solubility of C in Mo. Lattice distortion due to misfit of the C atoms in the interstitial sites appears to play a significant role in determining the thermodynamic properties of C in solid Mo.
Document ID
19790070428
Document Type
Reprint (Version printed in journal)
Authors
Seigle, L. L. (New York, State University Stony Brook, N.Y., United States)
Chang, C. L. (General Electric Co. San Jose, Calif., United States)
Sharma, T. P. (General Instruments Corp. Hicksville, N.Y., United States)
Date Acquired
August 9, 2013
Publication Date
September 1, 1979
Publication Information
Publication: Metallurgical Transactions A - Physical Metallurgy and Materials Science
Volume: 10A
Subject Category
METALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NGR-33-015-035
Distribution Limits
Public
Copyright
Other