Abstract
Electrochemical measurements have been made of the activity of oxygen in liquid copper alloys with a small amount of silver and antimony in the temperature range of 1100∼1150°C. The galvanic cell used was
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From these experimental results, it was found that the activities of oxygen in liquid copper were decreased by the addition of antimony but a little increased by the addition of silver.
The relations between the activity coefficients of oxygen in liquid copper alloys with silver and antimony and the mole fractions of those alloying elements were represented as follows:
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