Abstract
The chemical vapor deposition (CVD) method was adopted to coat soft α-Fe layer on the quenched Nd13.5Fe80Ga0.5B6 ribbons. Microstructure and magnetic properties of the coated ribbons, isotropic and anisotropic Nd2Fe14B/α-Fe nano-composites were examined by means of X-ray diffraction, back-scattered electron scanning electron microscopy, field emission scanning electron microscopy and a vibrating sample magnetometer. The results showed that the CVD method was effective to introduce soft phase into the nano-composites. The microstructure and magnetic properties of isotropic/anisotropic Nd2Fe14B/α-Fe nano-composites would improve if the NdFeB ribbons were deposited with appropriate amount of soft phases. Excessive soft phase would weaken the magnetostatic coupling between soft/hard grains and deteriorate the alignment of Nd2Fe14B grains.
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