(1. 太原理工大学 表面工程研究所， 太原 030024；
2. 华北工学院分院 机械工程系, 太原 030008)
摘 要: 研究了T8钢等离子体脱碳对随后渗金属的影响。介绍了两种处理工艺，一种是脱碳后渗金属，另一种是直接渗金属。结果表明，在离子轰击下，高碳钢表层产生严重的脱碳层，脱碳层的存在对随后的渗金属过程有着很大的影响。脱碳后渗金属，渗层厚度达80μm；直接渗金属，渗层厚度仅15μm。在两种渗金属条件下，表面合金层的非碳化物形成元素Co含量差别不是很大，而强碳化物形成元素W和Mo的含量却有着显著差异，直接渗金属的，表层W和Mo含量几乎为零，而脱碳后渗金属的，表层W和Mo总量最大达到6%左右。
关键字: 高碳钢； 脱碳； 渗金属； 离子轰击
ion bombarding and its effect on surface alloying
（1. Research Institute of Surface Engineering，
Taiyuan University of Technology，Taiyuan 030024， P.R.China；
2. Department of Mechanical Engineering， The College Attached to
North China Institute of Technology， Taiyuan 030008, P.R.China）
Abstract:Decarbonizing of high carbon steel under condition of ion bombarding and its effect on surface alloying soon afterwards were studied.Two processes were introduced，that is, the decarbonizing and then surface alloying，and the surface alloying directly. The results show that a serious decarbonizing layer in the surface of high carbon steel is produced by ion bombarding. The decarbonizing layer has striking influence on surface alloying. The thickness of the alloying layer is 80μm in the decarbonizing and then surface alloying， but only 15μm in the surface alloying directly. The content of cobalt which doesn't form carbide doesn't have a great difference in two processes， but that of tungsten and molybdenum make a great difference. The total content of tungsten and molybdenum is 6% or so in the decarbonizing and then surface alloying， but is almost zero in the surface alloying directly.
Key words: high carbon steel; decarbonizing; surface alloying; ion bombarding
