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模拟了氨氮与铁钢熔体之间的界面反应，实验研究了在不同条件下的铁钢液吸氮的热力学、动力学过程．结果表明：当铁钢液中氧质量分数为０．００７ ％ ～０．０２０ ％ 时，铁钢液吸氮速度的控制性环节是氮在铁钢液相边界层内的传质；铁钢种类及实验温度对表观反应速度常数ｋ１ 有很大影响，而氨氮分压对ｋ１ 无影响．
The interfacial reaction between ammonia nitrogen and molten iron was simulated. The thermodynamics and kinetics of nitrogen absorption in molten steel under different conditions were studied experimentally. The results show that when the mass fraction of iron in molten steel is 0.007% ~ 0.020%, the controllable rate of nitrogen absorption in molten steel is the mass transfer of nitrogen in the liquid steel boundary layer. The experimental temperature has a great influence on the apparent reaction rate constant k1, while the partial pressure of ammonia nitrogen has no effect on k1.