Scholarlink

Sulfur is an impurity element that generally reduces the mechanical performance and corrosion resistance of steel, and should be removed as much as possible in steelmakingSteelmaking. YttriumYttrium has a strong affinity for [S] and significantly reduces the content of [S] by forming sulfides. Accurate thermodynamicThermodynamics data are integral to studying the yttriumYttrium-sulfurYttrium-sulfur equilibrium reaction and inclusion modification. This work used a high-purity yttria crucible to investigate the thermodynamicThermodynamics equilibrium of [Y] and [S] under an argon atmosphere in an induction furnace. The equilibrium constantEquilibrium constant and interaction coefficientInteraction coefficient of the yttriumYttrium-sulfur reaction in liquid iron were determined at 1600–1700 ℃. The results show that the relationship between the equilibrium constantEquilibrium constant of the reaction YS(s) = [Y] + [S] can be expressed as: \(\log K_{{\text{Y}}} (K_{{\text{Y}}}^{{\text{O}}} = a_{{\text{Y}}} a_{{\text{S}}} /a_{{{\text{YS}}}} ) = { - }15151.05/T + 3.12 \quad 1600 - 1700\,{}^\circ\text{C}\) \(K^{\prime}_{{\text{Y}}} = ([\%{\text{Y}}][\%{\text{S}}])\) can be expressed as: \(\log K^{\prime} = \log K_{{\text{Y}}} - ( - 8076.88/T + 1.47)(2.8[\%{\text{S}}] + [{\text{Y}}])\) The first-order interaction coefficientInteraction coefficient \(e_{{\text{S}}}^{{\text{Y}}}\) can be presented as: \(e_{{\text{S}}}^{{\text{Y}}} = - 8076.88/T + 1.47\)

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Thermodynamic Equilibria of Yttrium and Sulfur in Liquid Iron

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Jian Kang,
  • Zheyang Lin,
  • Juntong Shen,
  • Hongpo Wang,
  • Yu Wang,
  • Ke Chen

摘要

Sulfur is an impurity element that generally reduces the mechanical performance and corrosion resistance of steel, and should be removed as much as possible in steelmakingSteelmaking. YttriumYttrium has a strong affinity for [S] and significantly reduces the content of [S] by forming sulfides. Accurate thermodynamicThermodynamics data are integral to studying the yttriumYttrium-sulfurYttrium-sulfur equilibrium reaction and inclusion modification. This work used a high-purity yttria crucible to investigate the thermodynamicThermodynamics equilibrium of [Y] and [S] under an argon atmosphere in an induction furnace. The equilibrium constantEquilibrium constant and interaction coefficientInteraction coefficient of the yttriumYttrium-sulfur reaction in liquid iron were determined at 1600–1700 ℃. The results show that the relationship between the equilibrium constantEquilibrium constant of the reaction YS(s) = [Y] + [S] can be expressed as: \(\log K_{{\text{Y}}} (K_{{\text{Y}}}^{{\text{O}}} = a_{{\text{Y}}} a_{{\text{S}}} /a_{{{\text{YS}}}} ) = { - }15151.05/T + 3.12 \quad 1600 - 1700\,{}^\circ\text{C}\) \(K^{\prime}_{{\text{Y}}} = ([\%{\text{Y}}][\%{\text{S}}])\) can be expressed as: \(\log K^{\prime} = \log K_{{\text{Y}}} - ( - 8076.88/T + 1.47)(2.8[\%{\text{S}}] + [{\text{Y}}])\) The first-order interaction coefficientInteraction coefficient \(e_{{\text{S}}}^{{\text{Y}}}\) can be presented as: \(e_{{\text{S}}}^{{\text{Y}}} = - 8076.88/T + 1.47\)