日本金属学会誌

J. Japan Inst. Metals, Vol. 34, No. 11 (1970),
pp. 1103-1107

The Effects of Tin and Nickel to the Thermodynamic Properties of Oxygen in Molten Copper

Toshio Oishi1, Tsutomu Nagahata2 and Joichiro Moriyama1

1Faculty of Engineering, Kyoto University, Kyoto
2Graduate School, Kyoto University, Kyoto

Abstract:

Using the oxygen concentration cell,

Pt/Ni, NiO/O/O=(in Cu alloys)/MO,
the activities of oxygen in dilute binary copper alloys containing tin and nickel were determined in the temperature range of 1100° ∼ 1200°C.
From these experimental results, it was found that the activities of oxygen in liquid copper were decreased by the addition of both tin and nickel, and the depressions became more pronounced by the addition of nickel than that of tin.
The interaction parameters ε 0(Sn) and ε 0(Ni) were calculated as follows:
ε 0(Sn) &= -6.45 × 104/T+41.57
ε 0(Ni) &= -7.93 × 104/T+46.47.


(Received 1970/6/11)

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