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奥氏体氮碳共渗时渗层增长常偏离抛物线规律，呈现正偏差和负偏差，ε相层甚至出现负增长。分析了这一生长特点与炉内气氛的关系。根据共渗层中碳、氮原子分布的互补性、碳原子浓度的负梯度现象，讨论了碳、氮原子间的交互作用以及少量碳原子对共渗过程的影响，解释了氮碳共渗时的生长动力学，并对渗层正常生长的条件作了分析。
In the case of austenite nitrocarburizing, the growth of the infiltrated layer often deviates from the law of parabola, showing a positive deviation and a negative deviation, and even a negative growth occurs in the ε phase. The relationship between this growth characteristic and furnace atmosphere was analyzed. According to the complementarity of the distribution of carbon and nitrogen atoms in the co-diffusion layer and the negative gradient of the carbon concentration, the interaction between carbon and nitrogen atoms and the influence of a small amount of carbon atoms on the co-permeation process are discussed. Growth kinetics, and the normal growth of the layer of the conditions were analyzed.