B effects on crystallization and magnetic properties of Pr9.44Fe90.56-xBx (x=7.16, 4.76) nanocomposite magnets

金属学报(英文版), 2010, 23(5): 321-326.

^1, , ^2, , ^3, , ^4, , ^5,

1.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

2.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

3.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

4.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

5.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

基金项目: the High Educational Talents Grant,Xi'an University of Technology,Shaanxi Provincial Project of Special Foundation of Key Disciplines,and Education Department of Shaanxi Provincial Government

B effects on crystallization and magnetic properties of Pr9.44Fe90.56-xBx (x=7.16, 4.76) nanocomposite magnets

Caiyin YOU ^1, , Na TIAN ^2, , Zhengxin LU ^3, , Liling GE ^4, , Xiaotian JING ^5,

1.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

2.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

3.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

4.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

5.School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

Keywords： Nanocomposite magnet

Magnetic properties, phase evolution and microstructures of Pr9.44Fe90.56-xBx (x=7.16 and 4.76) nanocomposite magnets have been investigated. Both as-spun ribbons exhibit two-step demagnetization curves, indicating the feature of partialcrystallization. By using differential scanning calorimeter (DSC) measurements, remained amorphous phase of ribbon with x=7.16 shows a higher crystallization temperature. At optimum annealing temperature of 650 ℃ for 10 min, better magnetic properties, Mr=1.01 T, jHc=796 kA/m and (BH)max=136 kJ/m3 were obtained in the sample with x=4.76. Transmission electron microscopy (TEM) observation confirms that the sample with x=4.76 possesses much finer grain size, which causing a better exchange coupling between soft and hard magnetic grains.

参考文献

[1]	D. H. PING;K. HONO;H. KANEKIYO .MICROSTRUCTURAL EVOLUTION OF Fe_3B/Nd_2Fe_14B NANOCOMPOSITE MAGNETS MICROALLOYED WITH Cu AND NB[J].Acta materialia,1999(11):4641-4651.
[2]	C. Y. You;D. H. Ping;K. Hono .Magnetic properties and microstructure of Fe_3B/Pr_2Fe_(14)B-type nanocomposite magnets with Co and Cr additions[J].Journal of Magnetism and Magnetic Materials,2006(1):136-144.
[3]	Z. C. Wang;H. A. Davies .Magnetic property enhancement in Pr_(FeCo)_(14)B/α-(FeCo)-based nanocomposite magnets through Hf, Ti or Al additions[J].Scripta materialia,2003(7):845-850.
[4]	X. K. Sun;Jian Zhang;Yelong Chu;Wei Liu;Baozhi Cui;Zhidong Zhang .Dependence of magnetic properties on grain size of #alpha#-Fe in nanocomposite (Nd,Dy)(Fe,Co,Nb,B)_(5.5)/#alpha#-Fe magnets[J].Applied physics letters,1999(12):1740-1742.

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B effects on crystallization and magnetic properties of Pr9.44Fe90.56-xBx (x=7.16, 4.76) nanocomposite magnets

参考文献