离子硫氮碳共渗复合氩原子轰击热处理工艺研究  

Study on Heat Treatment of Combined Ion SCN Co-diffusion With Ar-bombardment

作　　者：张翔[1] 

机构地区：[1]长安大学工程机械学院,陕西西安710064

出　　处：《中国表面工程》2004年第2期30-32,共3页China Surface Engineering

摘　　要：采用离子硫氮碳共渗+氩原子轰击+离子硫氮碳共渗工艺对35CrMo钢进行了深层离子硫氮碳共渗。氩原子轰击试验表明:氩原子轰击使工件表面的化合物层呈柱状晶形貌,大大提高了氮在化合物层中的扩散能力,保持了扩散层中氮的浓度梯度,从而为氮的继续渗入提供了通道。35CrMo钢制风冷机齿轮经6 h离子SNC共渗+1 h 氩原子轰击+6 h离子SNC共渗处理,有效渗层(HV>500)达0.2～0.3 mm,总渗层达到0.5～0.6 mm,使用寿命明显提高。Combining Ion SCN co-diffusion with Ar-bombardment, a deeper diffused layer on the surface of 35CrMo steel was produced and studied. The results showed that the layer of compounds of 35CrMo steel was formed as columnar crystal, which improved the diffusion ability of Nitrogen through providing the channels for its continuous diffusion. The effective thickness (HV>500)of diffused layer reached 0.2～0.3 mm and the total thickness reached 0.5 mm, the life time of 35CrMo steel gears was obviously prolonged.

关 键 词：离子硫氮碳共渗 氩原子轰击 

分 类 号：TG156.8[金属学及工艺—热处理]