Srikanth, S and Jacob, K T (1991) Vapor-Pressure of Calcium Corresponding to the Reduction of Calcia by Aluminium. Transactions of the Indian Institute of Metals, 44 (5). pp. 369-373.
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Abstract
The equilibrium pressure of calcium corresponding to the reduction reaction 6CaO (s) + 2Al (l) half-arrow-right-over-half-arrow-left 3CaO.Al2O3 (s) + 3Ca (g) has been measured by Knudsen effusion - mass loss analysis in the temperature range 1190 - 1500 K. The measured vapour pressure can be expressed as a function of temperature by the relation: log p (Ca) (Pa) = -10,670/T + 9.267 The calcium generated is partially absorbed by aluminium to form an alloy. The equilibrium composition of the alloy
at 1373 K was found to be 22 mol% Ca - 78 mol% Al. The measured vapour pressure is in good agreement with that computed from thermodynamic data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Calcium; thermodynamic; vapor pressure |
| Subjects: | Metallurgy |
| Divisions: | Director Office |
| Depositing User: | Users 5 not found. |
| Date Deposited: | 23 Sep 2011 04:58 |
| Last Modified: | 25 Jun 2015 05:26 |
| URI: | http://eprints.nmlindia.org/id/eprint/3990 |
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