Effect of Rare Earth Elements on Nitrocarburizing Kinetics of 35CrMo Steel

• 作 者: 王宽 刘建华 范力茹
• 机 构: Academic Affairs Department Hebei Normal University of Science & Technology,State Key Laboratory of
• 出 处: Journal of Rare Earths
• 发表日期: 2004年期
• 关键词: kinetics preliminarily catalysis adding nitro processed nitride Ammonia petroleu

The effect of RE elements on nitrocarburizing kinetics of 35CrMo steel was studied. The results show that adding proper quantity of RE can decrease the diffusion activation energy of N atoms, the nitrocarburizing process is accelerated obviously under the acting of activity and catalysis of RE, and compared with nitrocarburizing process without RE addition, the nitrocarburizing rate increases 25%～30%. In addition, the math formula was set up between case depth of the samples and its corresponded nitrocarburizing time, and the catalytic effect mechanism was also preliminarily discussed.

The effect of RE elements on nitrocarburizing kinetics of 35CrMo steel was studied. The results show that adding proper quantity of RE can decrease the diffusion activation energy of N atoms, the nitrocarburizing process is accelearently under acting and activity of catalysis of RE, and Compared with nitrocarburizing process without RE addition, the nitrocarburizing rate increases 25% ~ 30%. In addition, the math formula was set up between case depth and the reaction effect mechanism was also preliminarily incorporated.