Abstract
Abstract The current-applied pressure-assisted process has been applied to obtain anisotropic thin NdFeB magnets. The magnetic properties and microstructure of Nd14Fe80B6 and Nd12Dy2Fe73.2Co6.6Ga0.6B5.6 magnets with thickness of millimeter and sub-millimeter scale were investigated. For the thin magnets, the remanence and coercivity are lower than those of the thick magnet in spite of higher thickness reduction ratio due to the poor c-axis texture and abnormal grain growth. The optimized magnetic properties of the thin Nd12Dy2Fe73.2Co6.6Ga0.6B5.6 magnet with thickness of 780 μm are Br=12.4 kG, iHc=164 kOe, and (BH)max=37.1 MGOe.
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