微碳铬铁渗氮的动力学研究  

Kinetics Research of Nitriding of Ultra-low Carbon Ferrochronium with Nitrogen Gas

作　　者：杨正道 丁伟中[2] 

机构地区：[1]上海市机械制造工艺研究所,200070 [2]上海大学,200072

出　　处：《热处理》1999年第3期14-17,共4页Heat Treatment

摘　　要：氮能提高某些钢种的耐磨性和抗疲劳性，在不锈钢中氮还可代替镍，而氮化铬铁合金中的氮是含氮钢冶炼中主要氮源之一。本课题对固态微碳铬铁合金在高温电阻炉中气体（氨气和氮气）渗氮的动力学进行了研究。通过改变各种渗氮条件，可以发现合金氢化时的温度对铬铁合金氮化速率及氮含量有很大影响；并且随着合金颗粒度减小，渗氮速率加快；在相同条件下氨气的渗氮效果要远远好于氮气。研究结果为最终获得好的渗氮效果提供了数据和方法。Nitrogen can improve wear and oxidation resistance in some types of steels, italso can take the Place of Nickel in stainless steel. Nitrogen in the nitriding Ferrochromium isone of major source to steel with Nitrogen. This paper studies on the kinetics of NitridingFerrochromum using gas (Ammonia or Nitrogen )in electric resistance furnace. After experiments, these results can be found that temperature of nitriding take a great effect on the velocity and Nitrogen containing,and the rate of nitriding will speed up with the minish of particle size,the effect of nitroding in ammonia is much better than in nitrogen at the same conditions. The rcsults of research offer dates and methods for the better effects of nitriding.

关 键 词：微碳铬铁 渗氮 动力学 

分 类 号：TG156.82[金属学及工艺—热处理]