張文峰2
(1. 太原理工大學 表面工程研究所， 太原 030024；
2. 華北工學院分院 機械工程系, 太原 030008)
摘 要: 研究了T8鋼等離子體脫碳對隨后滲金屬的影響。介紹了兩種處理工藝，一種是脫碳后滲金屬，另一種是直接滲金屬。結(jié)果表明，在離子轟擊下，高碳鋼表層產(chǎn)生嚴重的脫碳層，脫碳層的存在對隨后的滲金屬過程有著很大的影響。脫碳后滲金屬，滲層厚度達80μm；直接滲金屬，滲層厚度僅15μm。在兩種滲金屬條件下，表面合金層的非碳化物形成元素Co含量差別不是很大，而強碳化物形成元素W和Mo的含量卻有著顯著差異，直接滲金屬的，表層W和Mo含量幾乎為零，而脫碳后滲金屬的，表層W和Mo總量最大達到6%左右。
關(guān)鍵字: 高碳鋼； 脫碳； 滲金屬； 離子轟擊
ion bombarding and its effect on surface alloying
XU Zhong1， YANG Yong-fu2， ZHANG Wen-feng2
（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
