摘要
本文综述了稀土元素在国内外表面处理技术中的研究及应用情况。稀土元素在化学热处理、喷涂、喷焊、电沉积、激光表面改性等方面,显示着神奇的功能。稀土的加入,使各种表面处理技术的工艺性能均得到提高,同时,使表层金属组织发生变化,起到微合金化作用,因而使用性能诸如耐磨、耐蚀、抗氧化、抗疲劳及抗回火脆性等方面均得到提高。通过稀土表面处理的零部件,有很多已应用于生产,取得了很大的经济效益。还有很多方面正处于研究阶段,以待进一步完善。
In this paper, the status of study and application of rare earth elements in surface treating at home and abroad is overiewed. Rare earth elements have wonderful function in chemical heat treatment, coating spray weling, electro depositing, laser surface modifing The processing properties of all kinds of surface treating technique increased as the addition of Re. At the same time and metal structure of surface layer is changed. Abradability, Corrosion resisting, Oxidation resistance, Endurance strength, and temper brittlness resistance are increased because of alloying action of Re. The mechenical parts by surface treating have applicated in production widely, A great deal of econnomic benifit is abtained. It also There are still a lot of problems need to be studied.
