Effects Of Ga Addition On Structural And Magnetic Properties Of Nanocomposite Nd-Fe-B-Ti-C Thick Ribbons
JOURNAL OF APPLIED PHYSICS(2012)
Abstract
Rapidly solidified Nd9Fe73B12.6C1.4Ti4-xGax (x = 0, 0.5, 1) thick ribbons were prepared by melt spinning technique at a surface speed (vs) of 5 m/s. The influences of Gallium doping on the glass-forming ability (GFA), microstructure and magnetic properties of alloys were investigated. The coercivity of Nd-Fe-B-Ti-C nanocomposite alloy thick ribbons can be dramatically enhanced by 0.5 at. % Ga addition in a low cooling-rate regime, attributing to the weakened exchange coupling interaction and grain refinement. The results of XRD showed that the GFA of Nd-Fe-B-Ti-C alloy was enhanced by the Ga addition. Therefore, Gallium addition is effective to refine grain and improve the glass-forming ability, which provides the possibility to obtain the high performance of magnetic properties by using strip casting (SC) method. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3679158]
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Key words
magnetic properties,ga addition,nd-fe-b-ti
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