1573Kにおける固体Fe-Cr合金中の硫黄の活量ならびに同合金と硫化物との平衡

概要

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Equilibrium between solid iron-chromium alloys and H_2-H_2S gas mixture was measured using a gas circulating method, to determine the activity of sulfur in the alloys at 1573K. An isothermal section of the Fe-Cr-S system at 1573K was experimentally determined over the metal/sulfide equilibrium region using a conventional silica capsule technique. The thermodynamic evaluation procedure based on a modified GIBBS-DUHEM integration was applied to the experimentally obtained tie-line distribution and phase relations, and a stability diagram was obtained. This revealed the existence of stable fields of the metal and sulfide phases as a function of the partial pressure of sulfur and the metal ratio. The solubility of sulfur in the Fe-Cr alloy was also determined.
社団法人日本鉄鋼協会の論文
1988-06-01