The difference of phase between the ordinary and the deep-levelion nitriding of 45 steel has beenanalysed by X-ray, and the phase change after temper has been researched.

• 用X射线分析了45钢常规离子氮化与快速离子氮化相组成的差别，研究了快速离子氮化后时效的相组成变化。