Influence of intermediate-heat treatment on the structure and magnetic properties of iron-rich Sm(CoFeCuZr)Z sintered magnets

2015 ◽  
Vol 117 (17) ◽  
pp. 17C704 ◽  
Author(s):  
Yosuke Horiuchi ◽  
Masaya Hagiwara ◽  
Masaki Endo ◽  
Naoyuki Sanada ◽  
Shinya Sakurada
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Intermediate Heat Treatment ◽  
Sintered Magnets

scholarly journals Improvement of Thermal Stability of Nd-Tb-Fe-Co-B Sintered Magnets by Additions of Pr, Ho, Al, and Cu

2012 ◽  
Vol 2012 ◽  
pp. 1-4 ◽  
Author(s):  
A. A. Lukin ◽  
E. I. Il'yashenko ◽  
A. T. Skjeltorp ◽  
G. Helgesen
Keyword(s):  
Heat Treatment ◽  
Thermal Stability ◽  
Magnetic Properties ◽  
Thermal Treatment ◽  
Temperature Interval ◽  
Magnetic Parameters ◽  
Sintered Magnets ◽  
Additional Doping ◽  
As Solubility ◽  
Thermal Stability Of

The present work investigates the influence of Pr, Al, Cu, B and Ho which were introduced into the Co-containing sintered magnets of Nd-Dy-Tb-Fe-Co-B type on the magnetic parameters (α, Hci, Br, BHmax⁡). The effect of heat treatment parameters on magnetic properties was also studied. It was revealed that the essential alloying of NdFeB magnets by such elements as Dy, Tb, Ho, Co as well as by boron-forming elements, for example, by titanium, may lead to reducing of F-phase quantity, and, as a consequence, to decreasing of magnetic parameters. It was also shown that additional doping of such alloys by Pr, B, Al and Cu leads to a significant increase of the quantity of F-phase in magnets as well as solubility of the Dy, Tb, Ho and Co in it. This promotes the increase of magnetic parameters. It was possible to attain the following properties for the magnets (Nd0,15Pr0,35Tb0,25Ho0,25)15(Fe0,71Co0,29)bal ⋅ Al0,9Cu0,1B8,5 (at. %) after optimal thermal treatment {1175 K (3,6–7,2 ks) with slow (12–16 ks) cooling to 675 K and subsequently remaining at T=775 K for 3,6 ks—hardening}: Br=0,88 T, Hci=1760 kA/m, BHmax⁡=144 kJ/m3, α<|0,01|%/K in the temperature interval 223–323 K.

Magnetic properties of high coercivity Nd23Dy10Fe64TM2B1 sintered magnets by a convergent heat treatment

2010 ◽  
Vol 36 (6-7) ◽  
pp. 859-866 ◽  
Author(s):  
Hoon-sup Kim ◽  
Se Hoon Kim ◽  
Jin Woo Kim ◽  
Young Jung Lee ◽  
Dae-Gun Kim ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
High Coercivity ◽  
Sintered Magnets

Structure, Magnetic Properties and Magnetic Impedance of Fast Quenched Ribbons of Alloys Based on FINEMET in the Initial State and After Heat Treatment

2020 ◽  
Vol 121 (10) ◽  
pp. 961-967
Author(s):  
E. A. Stepanova ◽  
S. O. Volchkov ◽  
V. A. Lukshina ◽  
D. A. Shishkin ◽  
D. M. Khudyakova ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Magnetic Properties ◽  
Initial State ◽  
Magnetic Impedance
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