东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (11): 1606-1608.DOI: -

• 论著 • 上一篇    下一篇

不同强磁场条件对渣金界面反应速率的影响

李炎华;苏志坚;赫冀成;   

  1. 东北大学材料电磁过程研究教育部重点实验室;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-11-15 发布日期:2013-06-22
  • 通讯作者: Su, Z.-J.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50302004);;

Influence of high-intensity magnetic field on substitution reaction rate on slag-metal interface

Li, Yan-Hua (1); Su, Zhi-Jian (1); He, Ji-Cheng (1)   

  1. (1) Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-11-15 Published:2013-06-22
  • Contact: Su, Z.-J.
  • About author:-
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摘要： 为了考察强磁场对渣金界面反应各步骤及总体反应速率的影响,研究了Al-Cu合金与质量配比为w(MgF2):w(CaF2):w(LiF):w(ZrF4)=1.7:1:1.5:9.3的四元熔渣发生的置换反应在不同强磁场条件下的反应速率.研究发现施加无梯度强磁场时,渣金界面反应速率在micro-MHD效应影响下加快;在梯度磁场下,反应界面受到梯度强磁场引发的磁化力以及micro-MHD效应的影响,从而导致化学反应速率发生变化.研究表明通过强磁场可以对渣金界面反应速率进行有效控制.

关键词: 强磁场, 磁场梯度, 渣金界面, 置换反应, 反应速率

Abstract: The rate of substitution reaction between the Al-Cu alloy and quaternary slag of which the mixture ratio in mass fraction is w(MgF2):w(CaF2):w(LiF):w(ZrF4) = 1.7:1:1.5:9.3 in the high-intensity magnetic fields under different conditions was investigated to make sure of how the high-intensity magnetic fields affect every and each step in the reaction process on slag-metal interface and the global reaction rate. The results revealed that the reaction rate is quickened owing to the micro-MHD effect if the high-intensity magnetic field applied to the reaction interface is of zero gradient, while the reaction rate changes in the high-intensity gradient magnetic field because the reaction interface is under the action of both the magnetizing force evoked by the magnetic field and micro-MHD effect. A conclusion is thus drawn that the reaction rate on slag-metal interface can be controlled efficiently via a high-intensity magnetic field.

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