Reduction of Sensitivity to Sintering Temperature for Nd-Fe-B Magnets through Zr and Nb Additions

作     者：Mi Yan Xigui Cui Lianqing Yu Tianyu Ma 

作者机构：State Key Laboratory of Silicon Materials Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2009年第25卷第5期

页      面：629-632页

核心收录：

学科分类：080503[工学-材料加工工程] 081704[工学-应用化学] 07[理学] 08[工学] 070305[理学-高分子化学与物理] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(No.50701039) Program forNew Century Excellent Talents in University(No.05–0526) Program for Innovative Research Team in University(No.0651) 

主　　题：Sintered Nd-Fe-B magnet Magnetic properties Consistency Sintering temperature 

摘      要：To reduce the sensitivity of grain growth to sintering temperature for improving property consistency of sintered Nd-Fe-B magnets, combined additions of Zr and Nb were investigated. It was found that when Zr content was increased to 0.07 at. pct, abnormal grain growth was effectively hindered even when the sintering temperature reached 1100℃. With combined additions of 0.07 at. pct Zr and 0.07 at. pct Nb, the sensitivity of grain growth to sintering temperature was greatly reduced consistency than the magnets containing no Zr and also improved. The magnets sintered at 1100℃ showed higher property Nb. In addition, the magnetic properties of magnets were also improved.