J. Japan Inst. Metals, Vol. 21, No. 10 (1957),
pp. 587-589

Degassing of Copper (1st Report)

Taro Ohtsuki

Abstract:

The results show that (1) the gas evolved from copper manufactured by deoxidizing with hydrogen consists mainly in H₂ over the temperature range 860° to 960° and the diffusion coefficient of H₂ in copper is represented by the relation D=2 × 10^-3 exp (-15,000/RT) cm²·sec^-1. (2) the gas evolved from copper manufactured by deoxidizing with magnesium consists mainly in H₂, with smaller amounts of CO, CO₂ and H₂O at the temperature 610~975° and the relation between the quantity of gas and temperature is at random, because magnesium included in copper diffuses and evaporates on heating in vacuum and cleaning action of the gas evolved from copper by a part of the magnesium content takes place.

(Received 1957/6/10)

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