Surface modification of (Tb_(0.3)Dy_(0.7))Fe_(1.95) alloy by ion nitriding process

作     者：李扩社 李红卫 严辉 于敦波 王丰瀛 张世荣 张国成 

作者机构：National Engineering Research Center for Rare Earth MaterialsGeneral Research Institute for Non-Ferrous Metalsand Grirem Advanced Materials Co.Ltd.Beijing 100088China College of Materials Science and EngineeringBeijing University of TechnologyBeijing 100022China 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2009年第27卷第2期

页      面：240-243页

核心收录：

学科分类：080503[工学-材料加工工程] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0708[理学-地球物理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by National High-Tech R&D Program (2006AA03Z106) Beijing Natural Science Foundation (2062012) National Natural Science Foundation (50801006) 

主　　题：magnetostfiction ion nitriding surface modification (Tb0.3Dy0.7)Fe1.95 rare earths 

摘      要：Effect of ion nitriding modification on surface hardness, corrosion resistance and magnetostriction of （Tb0.3Dy0.7）Fe1.95 alloy was investigated. Results demonstrated that a 100-200 nm thick nitrided layer was formed on the sample surface by ion nitriding treatment, which improved obviously surface hardness, wear, and corrosion resistance properties of （Tb0.3Dy0.7）Fe1.95 alloys. The surface hardness was increased from HV587 to HV622 after ion nitriding at 650 K for 6 h. Furthermore, ion nitriding treatment had almost no influence on mag- netostrictive performance as the nitrided layer was quite thin and the treatment temperature was not too high. The results might provide us a new approach for surface modification of （Tb0.3Dy0.7）Fe1.95 alloy.