Vapor-Pressure Of Calcium Corresponding To The Reduction Of Calcia By Aluminum

Srikanth, S and Jacob, KT (1991) Vapor-Pressure Of Calcium Corresponding To The Reduction Of Calcia By Aluminum. In: Transactions of the Indian Institute of Metals, 44 (5). 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:	Journal Article
Publication:	Transactions of the Indian Institute of Metals
Publisher:	Indian Inst Metals
Additional Information:	Copyright of this article belongs to Indian Inst Metals.
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	07 Dec 2010 06:52
Last Modified:	09 Dec 2011 09:29
URI:	http://eprints.iisc.ac.in/id/eprint/34351

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