Equilibrium of CO-CO2 gas mixtures of known composition with carbon and oxygen in liquid iron-phosphorus alloys have been studied in the range of 0.5-5.5%P in liquid iron at 1510.., 1560.. and 1610... It has been found that the effects of phosphorus on the activity coefficients of carbon or oxygen in liquid iron can be expressed by the following equations.1. The relationships between the activity coefficients of carbon or oxygen and phosphorus in liquid iron.<4%PVery dil. Sol. <5%P2. The products of carbon and oxygen in liquid iron decreases with increasing phosphorus content.
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Ban-Ya et al. (1963) studied this question.