Jacob, K. T. ; Rajitha, G. ; Reddy, S. N. S. (2010) Reactive interdiffusion: deviation from local equilibrium in the Fe–NiTiO3 couple Scripta Materialia, 63 (2). pp. 204-206. ISSN 1359-6462
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.scriptamat.2010.03.053
Abstract
Deviation from local equilibrium between Fe–Ni alloy and (Fe,Ni)TiO3 solid solution in the reaction–diffusion zone of the Fe–NiTiO3 couple at 1273 K is evaluated by comparing the measured compositions in the zone with experimentally determined equilibrium tie-lines. The deviation is quantified by computing the Gibbs energy change for the reaction, Fe + NiTiO3→FeTiO3 + Ni, from measured compositions in the zone and activity data available in the literature. Except near the extremities of the zone, the computed Gibbs energy change is constant, 8.2 kJ mol−1 higher than the standard Gibbs energy change for the reaction.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Diffusion; Thermodynamics; Phase Diagram; Oxides |
| ID Code: | 95066 |
| Deposited On: | 02 Nov 2012 05:22 |
| Last Modified: | 02 Nov 2012 05:22 |
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