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

<table>Temperature <svg height="15.4" id="M53" style="vertical-align:-3.39066pt" version="1.1" viewbox="0 0 27.1875 15.4" width="27.1875" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.012,-0,0,-.012,2.9,15.187)"><use xlink:href="#x1D456"></use></g>
<g transform="matrix(.017,-0,0,-.017,6.762,11.112)"><use xlink:href="#x1D43B"></use></g>
<g transform="matrix(.012,-0,0,-.012,21.675,15.187)"><use xlink:href="#x1D450"></use></g>
</svg> dependence of (Nd<sub>0,15</sub>Pr<sub>0,35</sub>Tb<sub>0,25</sub> Ho<sub>0,25</sub>)<sub>15</sub>(Fe<sub>0,71</sub>Co<sub>0,29</sub>)<sub>bal</sub>·Al<sub>0,9</sub>Cu<sub>0,1</sub>B<sub>8, 5</sub> magnets after multistep heat treatment (1175 K to 675 K).</table>

Physics Research International

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Figure 4

Figure 4: Improvement of Thermal Stability of Nd-Tb-Fe-Co-B Sintered Magnets by Additions of Pr, Ho, Al, and Cu 