综合半个多世纪以来国内外大量的研究工作,评述了影响化学热处理中渗入原子在钢中扩散的物理因素,晶体结构因素和化学因素,以及采用超声波,磁场与磁性转变,晶体结构与相变,冷热塑性变形,预先N-C共渗,循环加热-降温,机械能助渗和稀土催渗等措施加速化学热处理过程所取得的效果。 Based on a large amount of researches in the past half a century, the physical, chemical and structural factors affecting the infiltration of atoms into steel during chemical heat treatment are reviewed. The effects of ultrasonic, magnetic field and magnetic transition, crystal structure and phase transition , Hot and cold plastic deformation, pre-NC co-infiltration, reheating-cooling, mechanical infiltration and rare earth seepage and other measures to speed up the chemical heat treatment process achieved results.