东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2005, Vol. 26 ›› Issue (3): 252-255.DOI: -

• 论著 • 上一篇    下一篇

Si-Ca;Si-Ba及Ca-Ba二元合金熔体组元活度的计算

姜周华;刘杨;李阳;梁连科   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳　110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2005-03-15 发布日期:2013-06-24
  • 通讯作者: Jiang, Z.-H.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金与上海宝钢集团公司联合资助项目(No.50174012)·

Calculation of component activities in Si-Ca, Si-Ba and Ca-Ba binary alloy melts

Jiang, Zhou-Hua (1); Liu, Yang (1); Li, Yang (1); Liang, Lian-Ke (1)   

  1. (1) Sch. of Mat. and Metall., Northeastern Univ., Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2005-03-15 Published:2013-06-24
  • Contact: Jiang, Z.-H.
  • About author:-
  • Supported by:
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摘要： 根据Miedema二元合金生成热模型,结合相关热力学数据,对硅钙钡系中的每个二元合金在1623K下的活度进行计算·结果表明,采用该模型对Si Ca合金活度的计算结果与实测结果吻合较好,Si Ca合金与Si Ba合金计算结果相对于理想熔体有较大负偏差,说明Ca及Ba原子与Si原子都有很强的相互作用,Ba Ca合金熔体在整个成分范围内较为接近理想熔体,Ca原子与Ba原子相互作用不大·

关键词: 含钡合金, 脱氧, 合金熔体, Miedema模型, 活度, 热力学数据

Abstract: Based on Miedema for calculating the formation heat of binary alloy system, the activity of each and every binary system in the Si-Ca-Ba alloy system was calculated at 1623 K combining with related thermodynamic data. The calculation results showed that although the activity of Si-Ca alloy confirms fairly with measured data, the activity curves of Si-Ca and Si-Ba alloy melts show relatively great negative deviation from the idea melt. It means that there is a strong interaction between Ca and Si atoms and between Ba and Si atoms. In comparison, the Ba-Ca melt comes nearer to the idea melt in the whole range of composition, and the interaction between Ca and Ba atoms is weaker.

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