The thermodynamic properties of oxygen in liquid copper-iron alloys

Biswas A.K. and Seow H.P. (1973) The thermodynamic properties of oxygen in liquid copper-iron alloys. Canadian Metallurgical Quarterly, 12 3: 254-264. doi:10.1179/cmq.1973.12.3.257

Author Biswas A.K.
Seow H.P.
Title The thermodynamic properties of oxygen in liquid copper-iron alloys
Journal name Canadian Metallurgical Quarterly   Check publisher's open access policy
ISSN 1879-1395
Publication date 1973-01-01
Sub-type Article (original research)
DOI 10.1179/cmq.1973.12.3.257
Volume 12
Issue 3
Start page 254
End page 264
Total pages 11
Subject 2506 Metals and Alloys
2209 Industrial and Manufacturing Engineering
Abstract Very little work has been done on the measurement of thermodynamic properties of oxygen in low-iron liquid copper-iron alloys in the temperature range 1250 to 1350°C. An attempt has been made in the present study to measure the oxygen contents of copper-iron alloys up to 10.20% Fe in situ by means of a semi-microbalance at the temperature of the experiment while equilibrating the liquid alloy samples, held in alumina crucibles, with mixtures of hydrogen-stearn-argon of known oxygen potentials. The results show that for each alloy composition the activity coefficient of oxygen remains constant and decreases as the iron content increases, in the oxygen unsaturated regions. The results further enabled the computation of the oxygen saturation values for each alloy composition as well as the temperature dependence of the interaction parameter for the effect of iron on oxygen in the Cu-O-Fe system. The free energIes of dissolution of gaseous oxygen in the liquid alloys of various compositions as well as those of the reaction H2(g) + [%O] in liq. Cu-Fe = H2 O(g) for the respective alloys have also been determined.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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