Effect of sintering temperature on the structure and magnetic properties of SmCo5/Fe nanocomposite magnets prepared by spark plasma sintering

2009 ◽  
Vol 17 (7) ◽  
pp. 517-522 ◽  
Author(s):  
P. Saravanan ◽  
R. Gopalan ◽  
D. Sivaprahasam ◽  
V. Chandrasekaran
Keyword(s):  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Sintering Temperature ◽  
Nanocomposite Magnets ◽  
Plasma Sintering ◽  
Spark Plasma

Structures and magnetic properties of Nd–Fe–B bulk nanocomposite magnets produced by the spark plasma sintering method

2004 ◽  
Vol 19 (9) ◽  
pp. 2730-2737 ◽  
Author(s):  
Tetsuji Saito ◽  
Tomonari Takeuchi ◽  
Hiroyuki Kageyama
Keyword(s):  
Magnetic Properties ◽  
Spark Plasma Sintering ◽  
Applied Pressure ◽  
High Coercivity ◽  
Bulk Materials ◽  
Soft Magnetic ◽  
Nanocomposite Magnets ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Sintering Method

We studied the effects of the sintering temperature and applied pressure on Nd–Fe–B bulk nanocomposite magnets produced by the spark plasma sintering (SPS) method. Amorphous Nd4Fe77.5B18.5 melt-spun ribbons were successfully consolidated into bulk form by the SPS method. When sintered at 873 K under applied pressures between 30 and 70 MPa, the bulk materials consisted of nanocomposite materials with a soft magnetic Fe3B phase and hard magnetic Nd2Fe14B phase. The density and magnetic properties of the bulk materials sintered at 873 K were strongly dependent on the applied pressure during sintering. Bulk Nd4Fe77.5B18.5 nanocomposite magnets sintered at 873 K under an applied pressure of 70 MPa showed a high remanence of 9.3 kG with a high coercivity of 2.5 kOe.

Sign in / Sign up

Export Citation Format

Share Document