文档介绍：铸造技术 V ol. 29 N o. 8

1136
F OU N DRY T ECH NO LO GY Aug 2008
材料表面激光合金化研究进展
李贵江1, 许长庆1 , 孟
丹2 , 穆志宏1
( 1. 河北工业大学材料科学与工程学院, 天津 300130; 2. 天津大学机械工程学院, 天津 300072)
摘要: 激光表面合金化是一种材料表面改性处理的新方法, 具有广阔的应用前景。本文综述了激光表面合金化的研究现状,
其中包括激光表面合金化工艺制定原理及方法、合金化涂层的组织特性与性能。研究认为, 采取适当的工艺参数和预热处理
可以得到理想的合金化涂层, 其显微组织具有典型的复合性特征; 合金化涂层与基体材料呈良好的冶金结合, 结合强度高, 能
够显著提高廉价基体材料表面的硬度、耐磨性、耐蚀性和耐腐蚀磨损等性能。同时本文指出了激光合金化当前研究存在的不
足和今后努力的方向。
关键词: 激光表面合金化; 合金化涂层; 组织和性能; 研究进展
中图分类号: TG174. 4
文献标识码: A
文章编号: 1000
8365( 2008) 08
1136
04
Research Progress on Laser Surface Alloying
LI Gui
jiang1 , XU Chang
qing1 , MENG Dan2 , MU Zhi
hong1
( 1. School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China; 2. School
of Mechanical Engineering, Tianjin Unirersiey, Tianjin 300072, China)
Abstract: Recent developments and applications of laser alloying in producing novel coatings are
reviewed in detail, including the principle of the preparation and the method, microstructural
characteristic and property. The results indicate that the ideal laser alloying coating can be achieved
with the optimized parameters, the microstructure of the alloying coating plex. The coating
has a strong metallurgical boning with substrate, and the coating has high hardness, excellent wear
resistance, corrosion resistance and corrosive wear resistance, so it is used widely. Further