Microstructural characteristics of Nd_2Fe_(14)B/α-Fe nanocomposite ribbons bearing Nb element

作     者：WANG Zhanyong LIU Wenqing ZHOU Bangxin NI Jiansen XU Hui LI Qiang WANG Zhanyong~a LIU Wenqing~b ZHOU Bangxin~b NI Jiansen~b XU Hui~b LI Qiang~b ~a Department of Materials Engineering,Shanghai Institute of Technology,Shanghai 200235,China ~b Institute of Materials,Shanghai University,Shanghai 200072,China

作者机构：Department of Materials Engineering Shanghai Institute of Technology Shanghai 200235 China Institute of Materials Shanghai University Shanghai 200072 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2008年第27卷第3期

页      面：299-302页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 0806[工学-冶金工程] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：2002AA302602-2 0552nm049 Shanghai Institute of Technology,SIT: YJ-2006-16 Shanghai Leading Academic Discipline Project 

主　　题：Nd2Fe14B/α-Fe nanocomposite magnet 3DAP magnetic properties 

摘      要：The effects of Nb on the microstructure and magnetic properties of （Nd0.9Dy0.1）9.5Fe79_xCo5NbxB6.5 （x = 0, 1） nanocomposite magnets were investigated. A fine and uniform microstructure was achieved for the ribbons annealed at 710℃ for 4 min, enhancing the interaction coupling between grains and improving the magnetic properties. The results of three-dimensional atom probe （3DAP） indicated that Fe-Nb-B inter- granular phase existed at the grain boundaries, suppressing the grain growth during the crystallization process. The coercivity was improved from 224 to 643 kA/m for the modification of the microstructure.