Magnetic properties of Nd‐Fe‐Co‐Cu‐Nb‐B system exchange‐spring magnets
Magnetic properties of Nd‐Fe‐Co‐Cu‐Nb‐B system exchange‐spring magnets
复制标题
Nd-Fe-Co-Cu-Nb-B系交换弹簧磁体的磁性能
DOI：
10.1002/1520-6416(20001130)133:3
复制
发表时间：
2000
影响因子：
0.4
通讯作者：
M. Yamasaki
中科院分区：
文献类型：
--
作者：
H. Yamamoto;Toru Niinomi;Satoshi Koumo;M. Hamano;M. Yamasaki
采用单辊快淬法制备了Pr-Fe-Co-V-W-Si-B系合金快淬薄带。研究了成分、表面速度和热处理对磁性能的影响。对以12.5 m/s表面速度制备的P9sFe71Co8V0.5W0.5Si0.5B10.5合金薄带进行了热处理晶化，得到最佳热处理条件为575°C保温3 min，其磁性能为（BH）max = 136.1 kJ/m3，Jr = 0.93 T，HcJ = 652.2 kA/m，HcB = 528.3kA/m。从Pr9Fe71Co8V0.5W0.5Si0.5B10.5合金快淬薄带结晶的薄带的Jr和HcJ温度系数分别为α（Jr）ave = −0.057%/°C和α（HcJ）= −0.450%/°C。使用在575 ℃退火3 min的薄带制备的压缩成型Pr9Fe71Co8V0.5W0.5Si0.5B10.5各向同性粘结磁体的（B）max值为80.0 kJ/m3，密度为6.24 Mg/m3。© 2006 Wiley Periodicals，Inc. Electr Eng Jpn，157（3）：10-16，2006;在线发表于Wiley InterScience（www.interscience.wiley.com）。版权所有© 2006 Wiley Periodicals，Inc.
The melt-spun ribbons of Pr-Fe-Co-V-W-Si-B system alloys were prepared by single roller rapid-quenching method. The effects of composition, surface velocity, and heat treatment on the magnetic properties were investigated. The P9sFe71Co8V0.5W0.5Si0.5B10.5 alloy ribbons prepared at a surface velocity of 12.5 m/s were crystallized by heat treatment, and the optimum heat-treatment condition was found to be at 575°C for 3 min, for which the magnetic properties were (BH)max = 136.1 kJ/m3, Jr = 0.93 T, HcJ = 652.2 kA/m, and HcB = 528.3 kA/m. The temperature coefficients of Jr and HcJ for the ribbons crystallized from melt-spun ribbons of Pr9Fe71Co8V0.5W0.5Si0.5B10.5 alloy were α(Jr)ave = −0.057%/°C and α(HcJ) = −0.450%/°C. The value of (B)max for the compression molding Pr9Fe71Co8V0.5W0.5Si0.5B10.5 isotropic bonded magnet prepared by using the ribbons annealed at 575°C for 3 min is 80.0 kJ/m3, and the density is 6.24 Mg/m3. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 157(3): 10–16, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/eej.20211 Copyright © 2006 Wiley Periodicals, Inc.