Thermodynamic Interaction between Chromium and Sulfur in Fe-Cr Melts
The effect of Cr on S in Fe-Cr melt was determined by measuring the equilibrium S distribution ratio between Fe-Cr-Csat.-S melts containing Cr up to 30 mass% and a CaO-Al2O3 slag of which the sulfide capacity was separately determined using a Fe-S-Csat melt in the temperature range of 1823-1923K.The experiments were carried out under a CO atmosphere.Therefore,the oxygen potential was controlled by the C-CO equilibrium.Chromium in the Fe-Cr-Csat-S melt increases the carbon solubility significantly.Therefore,the effect of carbon solubility variation with Cr content on S should be also considered.Using Wagner’s formalism,the effect of a specific concentration of Cr on the activity coefficient of S in liquid iron,Cr S e was determined as follows.
Desulfurization Stainless steel Chromium Sulfur Carbon Interaction parameter
DO Kyung-Hyo PAEK Min-Kyu SUK Min-Oh KIM Dong-Sik PAK Jong-Jin
Department of Metallurgical and Materials Engineering,Hanyang University,Ansan,Korea Stainless Steel Research Group,Technical Research Lab.,POSCO,Pohang,Korea
国际会议
Asia Steel International conference 2012(第五届亚洲钢铁大会)
北京
英文
1-4
2012-09-23（万方平台首次上网日期，不代表论文的发表时间）