Abstract
Abstract Nd 13 Dy 2 Fe 79 B 6 (at%) magnets were fabricated via cyclic sintering. The cyclic sintering of Nd–Fe–B powder yielded samples with densities greater than 98%. The bending strength and fracture toughness of the cyclic sintered specimens were 520 MPa and 6.16 MPa m 1/2 , respectively, and the coercivity of the samples increased from 1666.8 kA/m to 1828.5 kA/m. Nd-rich phases may have effectively penetrated into the boundaries between neighboring Nd 2 Fe 14 B grains during the cyclic sintering process. The microstructures and shapes of the Nd-rich phases were effectively controlled, resulting in improved mechanical and magnetic properties.
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