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首页> 外文期刊>ISIJ international >Effects of Cu, Sn and W on the rate of nitrogen dissociation on the surface of molten iron
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Effects of Cu, Sn and W on the rate of nitrogen dissociation on the surface of molten iron

机译：铜，锡和钨对铁水表面氮解离速率的影响

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摘要

The effects of Cu, Sn and W on the rate of nitrogen dissociation on the surface of molten iron have been investigated at 1 973 K by an isotope exchange method. The rate constant of nitrogen dissociation increases with increasing the content of W. On the other hand, the rate constant decreases with increasing the Cu and Sn contents. These effects of the alloying elements on the rate of nitrogen dissociation depend on the affinity of the solute element with nitrogen in molten iron. The elements which have stronger affinity with nitrogen than iron have a stronger effect of enhancing the nitrogen dissociation rate, and those which have stronger repulsive force against nitrogen have a stronger effect of retarding the nitrogen dissociation. The effect of the alloying elements on the rate of nitrogen dissociation is investigated based on a model proposed from the analysis on the basis of surface concentration of the solute. This model can reasonably represent the variation of the rate constant of nitrogen dissociation with the W content.
机译：已经通过同位素交换法研究了铜，锡和钨对铁水表面氮解离速率的影响，其浓度为1973K。氮解离的速率常数随W含量的增加而增加。另一方面，速率常数随Cu和Sn含量的增加而降低。合金元素对氮解离速率的这些影响取决于溶质元素与铁水中氮的亲和力。与铁相比，与氮的亲和力强的元素具有提高氮离解率的效果，对氮具有排斥力的元素具有更强的阻滞氮离解的效果。基于基于溶质表面浓度的分析所提出的模型，研究了合金元素对氮解离速率的影响。该模型可以合理地表示氮解离速率常数随W含量的变化。

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