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Low-melting eutectic diffusion has emerged as a practical approach to enhance the coercivity of hot-deformed Nd–Fe–B magnets. Herein, we report a high-efficient stress-induced eutectic diffusion method to develop high-coercivity hot-deformed Nd–Fe–B magnets. In this method, fast Pr–Cu eutectic diffusion is accomplished with the hot-pressed and hot-deformed processes simultaneously. The coercivity...
Anisotropic ultrafine-grained Nd-Fe-B magnets with WC addition were prepared by hot deformation. With WC nano-particles addition of ~1.0wt.%, the squareness was optimized and the coercivity of the hot-deformed magnets increased substantially by 2.16kOe, from 15.59 to 17.75kOe without expense of the remanent magnetization. The observation for microstructure revealed that the WC nano-particles mainly...
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