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首页> 外文期刊>ISIJ international >Effects of Oxygen and Nitrogen on the Rate of Nitrogen Dissolution in Iron-Chromium and Iron-Vanadium Alloys
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Effects of Oxygen and Nitrogen on the Rate of Nitrogen Dissolution in Iron-Chromium and Iron-Vanadium Alloys

机译：氧和氮对铁铬和铁钒合金中氮溶解速率的影响

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摘要

The rate constant of nitrogen dissolution in a Fe-20mass%Cr has been measured as a function of oxygen content by ~(14)N-~(15)N isotope exchange reaction at 1 973 K. Adsorption coefficient of oxygen on a Fe-20mass%Cr at 1 973 K has been determined to be 100 in terms of [mass%] from present results. This value is smaller than that on pure iron (0 mass% Cr), 144, which was determined by ou'r previous work. Moreover, dependence of the rate constant of nitrogen dissolution in Fe-Cr and Fe-V alloys on nitrogen partial pressure has been measured by the same technique in order to investigate the adsorption effect of nitrogen itself. Adsorption coefficient of nitrogen calculated from present results is much smaller than that of oxygen and it is confirmed that nitrogen is not so surface active as oxygen in molten Fe-Cr and Fe-V alloys. However, it is observed that the value of adsorption coefficient increases from 0.0509 to 0.156 in terms of (P_(N_2))~(1/2) by addition of chromium up to 60 mass% Cr at 1 873 K. Addition of vanadium is more effective for increasing the adsorption coefficient and the value for Fe-6.2mass%V at 1 973 K is 6 times larger than that for pure iron.
机译：通过在（1）973 K下〜（14）N-〜（15）N同位素交换反应，测量了Fe-20mass％Cr中氮的溶解速率常数与氧含量的关系。氧在Fe-上的吸附系数根据目前的结果，以[质量％]计，在1973 K处20质量％Cr已确定为100。该值小于纯铁（0质量％Cr）上的值144，后者是由您先前的工作确定的。而且，为了研究氮本身的吸附效果，已经通过相同的技术测量了Fe-Cr和Fe-V合金中氮溶解速率常数对氮分压的依赖性。根据目前的结果计算得出的氮的吸附系数比氧小得多，并且可以确定氮在熔融的Fe-Cr和Fe-V合金中不像氧那样具有表面活性。然而，观察到，通过在1873 K处添加高达60质量％Cr的铬，吸附系数的值从（P_（N_2））〜（1/2）的值从0.0509增加到0.156。对提高吸附系数更有效，在1 973 K时Fe-6.2质量％V的值是纯铁的6倍。

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