摘要
采用粉末冶金工艺制备了高温稀土永磁Sm(CobalFexCu0.1Zr0.03)7.5(x=0.09～0.21),研究了Fe含量对磁体磁性能的影响。结果表明:随着Fe含量的增加,剩磁Br和最大磁能积(BH)max 逐渐增加,在x=0.21时获得最大值,分别为0.96T和176.7kJ/m3;内禀矫顽力Hci先增加后降低,在x=0.15时获得峰值2276.6 kA/m。最佳工艺制备(x=0.15)的磁体温度稳定性良好,B-H退磁曲线在温度为500 ℃时保持为直线;内禀矫顽力温度系数β为-0.16%/℃,最高使用温度(OT)max达到533 ℃。
The influence of Fe content on magnetic properties of high temperature rare earth permanent magnets Sm（CObaiFexCu0.1Zr0.03）7.5 （x=0.09-0.21）, prepared by the conventional powder metallurgy method, has been studied. The results show that： with increasing of Fe content, Brand （BH）max increased, the optimum value of Br and （BH）max reached to 0.96 T and 176.7 kJ/m^3 while x=0.21; Hci increased first, then decreased with further increasing of Fe content; the optimum value of Hci reached to 2276.6 kA/m while x=0.15. The temperature stability of the magnet with x=0.15, prepared by optimum process, has been proved to be excellent, and the B-H demagnetization curve kept a straight line at 500 ℃; the intrinsic coercivity coefficient fl was -0.16%/℃, and the maximum operating temperature was to 533 ℃.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2008年第3期396-399,共4页
Rare Metal Materials and Engineering
基金
Supported by Applying Foundation Research Project (05JY029-072) of Sichuan Provience
关键词
高温稀土永磁
Sm(Co
Fe
Cu
Zr)
磁体
磁性能
温度稳定性
high temperature rare earth permanent magnet
Sm（Co,Fe,Cu,Zr）z magnet
magnetic property
temperature stability
