Thermodynamic properties and phase boundaries of Co--O solutions

Jacob, K. T. ; Hajra, J. P. (1985) Thermodynamic properties and phase boundaries of Co--O solutions Zeitschrift für Metallkunde, 76 (10). pp. 709-713. ISSN 0044-3093

Full text not available from this repository.


The thermodynamic properties of liquid unsaturated Co--O solutions have been determined by electrochemical measurements using (Y2O3)ThO2 as solid electrolyte. The cell can be represented as, Pt. MoO2+Mo| (Y2O3)ThO2|OCo ,tungsten, Pt, Emf of the cell was measured as a function of oxygen concentration in liquid Co at 1798, 1873 and 1973K. Least-mean squares regression analysis of the experimental data gives for the free energy of solution of diatomic oxygen in liquid Co Delta G exp 0O(Co) = --84935--7.61 T ( plus/minus 400) J/g-atom and self interaction parameter for oxygen epsilon exp OO= --97240/T+40.52(plus/minus 1) where the standard state for O is an infinitely dilute solution in which the activity is equal to atomic percent. The present data are discussed in comparison with those reported in the literature and the phase diagram for the Co--O system.

Item Type:Article
Source:Copyright of this article belongs to Carl Hanser Verlag.
ID Code:94818
Deposited On:04 Oct 2012 11:28
Last Modified:04 Oct 2012 11:28

Repository Staff Only: item control page