The study aims at deriving an equation for the temperature field of the specimen- vapour-gaseous envelope(VGE) - electrolyte three-phase system, followed by the calculation of the temperature distribution expression. The diffusion mechanism of carbon and nitrogen, in light of the theory of molecular diffusion, and the mechanism behind the plasma electrolytic saturation, is also discussed. In the PES process, the diffusion of carbon and nitrogen is affected by the strengthening voltage and processing time, which in turn affects the thickness and element distribution of the diffusion layer. Carbon, of which the diffusion depth ranges from 0.5μm to 2.5μm, is mainly distributed into the outermost layer. While the nitrogen is able to distribute throughout the diffusion layer as indicated by its several tens microns of diffusion depth. Further, the influence of process parameters on the diffusion of atoms during the strengthening process is verified experimentally.

该研究旨在推导样品-蒸气-气态包膜（VGE）-电解质三相系统的温度场方程，然后计算温度分布表达式。根据分子扩散理论，讨论了碳和氮的扩散机理，以及等离子体电解饱和的机理。在PES工艺中，碳和氮的扩散受增强电压和处理时间的影响，进而影响扩散层的厚度和元素分布。碳的扩散深度在0.5μm到2.5μm之间，主要分布在最外层。尽管氮气能够通过其几十微米的扩散深度来分布在整个扩散层中。进一步，