<報文>ラジオアイソトープによる熔鉄中の硫黄の活量の測定

概要

論文の詳細を見る
Activity of sulphur in liquid iron was determined by measuring the value proportional to the rate of vapourization. Radioactive sulphur ^<35>S was used to distinguish sulphur from other vapourized components and to make easy the experiment. A sample containing ^<35>S was melted in vacuum by induction heating at 1570℃ and a part of vapourizing gas was condensed on a cupper target above the sample. Values of the activity of sulphur were determined from radioactivities of samples, of targets and the sulphur content of samples. Activity coefficient of sulphur in liquid iron decreased with sulphur content and values of the activity were nearly equal to those of previous investigators which were determined from the equilibrium constant for pure iron-sulphur system. A few experiments were carried out with carbon saturated iron to examine the effect of carbon on the activity of sulphur. Calculated values of the interaction coefficient f^c_s were 4.0〜5.5 at carbon saturation.
東北大学の論文
1958-07-30