Tetsu-to-Hagane
Online ISSN : 1883-2954
Print ISSN : 0021-1575
ISSN-L : 0021-1575
Activity of Oxygen in Liquid Iron Alloys Containing Several Kinds of Elements Simultaneously
Activity of oxygen in liquid steel-II
Sachio MATOBATakeshi KUWANA
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JOURNAL FREE ACCESS

1965 Volume 51 Issue 6 Pages 1114-1121

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Abstract

The equilibrium of oxygen in liquid iron alloys containing nickel, cobalt, tungsten and molybdenum simultaneously with H2-H2O mixtures has been studied at 1600°C.
Effects of alloying elements on the activity coefficient of oxygen in liquid iron alloys have been measured, and the obtained values of parameters compared with the calculated ones based on the equations introduced by C. Wagner.
As the concentrations of alloying elements increase in liquid iron, the equation comes to be unfit for our results.
The empirical formula was given for the Fe-Ni-Co-W-Mo-O system as follows:
log f(Ni, Co, W, Mo)O(corr)=log f(Ni)O+log f(Co)O+log f(W)O+log f(Mo)O
+0.000116[%Ni]·[%Co]-0.000163[%Ni]·[%W]
+0.000082[%Ni]·[%Mo]-0.000055[%Co]·[%W]
+0.000003[%Co]·[%Mo]-0.000266[%W]·[%Mo]

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© The Iron and Steel Institute of Japan
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