Ananthasivan, K. ; Kaliappan, I. ; Anthonysamy, S. ; Chandramouli, V. ; Vasudeva Rao, P. R. ; Mathews, C. K. ; Jacob, K. T. (1996) Gibbs energies of formation of UMoC1.7 and UMoC2 Journal of Alloys and Compounds, 245 (1-2). pp. 40-46. ISSN 0925-8388
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S09258...
Related URL: http://dx.doi.org/10.1016/S0925-8388(96)02446-2
Abstract
The chemical potentials of carbon associated with two three-phase fields in the system U---Mo---C were measured by using the methane-hydrogen gas equilibration technique in the temperature range 973 to 1173 K. The technique was validated by measuring the standard Gibbs energy of formation of Mo2C. From the experimentally measured values of the chemical potential of carbon in the ternary phase fields UC+Mo+UMoC17 and UC+UMoC17+UMoC2, and data for UC from the literature, the Gibbs energies of formation of the two ternary carbides were derived: Δ1G1‹UMoC1Z = -146632 -15.0T(±8200) J mol 1(973-1173 K) Δ1G2 ‹UMoC2=-151 961-13.7T(±8100) Jmol1(973-1173K) Experimentally determined values of the Gibbs energy of formation of UMoC17 are reported for the first time.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Carbon Chemical Potential; Gas-solid Equilibriation; Enthalpy of Formation; Ternary Carbides of Uranium and Molybdenum |
| ID Code: | 25402 |
| Deposited On: | 06 Dec 2010 13:27 |
| Last Modified: | 03 Jun 2011 09:32 |
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